MALFUNCTION DESCRIPTION
The hybrid vehicle control ECU assembly monitors the high-voltage wiring between the HV battery and inverter with converter assembly and detects an open circuit malfunction.
The cause of this malfunction may be one of the following:
Voltage sensor (VH) malfunction
Motor generator control ECU (MG ECU) malfunction
Communication (wire harness) malfunction
HV battery malfunction
HV battery junction block assembly malfunction
Inverter with converter assembly malfunction
High-voltage wire harness malfunction
High-voltage connector or connection malfunction
Hybrid vehicle control ECU assembly malfunction
HV battery junction block assembly malfunction
Low voltage wire harness malfunction
Low voltage connector malfunction
INSPECTION DESCRIPTION
| System Diagram Range | Inspection Content | Reason | Inspection Step |
|---|---|---|---|
| *a | Check connection condition and wire harness continuity between hybrid vehicle control ECU assembly and HV battery junction block assembly | Check whether connectors are connected properly and check for an open circuit in the SMRP and SMRB primary lines | 3 to 7 |
| *b | Check system main relay | Check whether SMRB and SMRP stuck OFF | 8, 9 |
| *c | Check connection condition and high-voltage cable continuity between HV battery junction block assembly and inverter with converter assembly | Check for open circuit and defective connection (arc marks) due to looseness | 10 to 12 |
| *d | Check high-voltage cable and connection condition between HV battery and HV battery junction block assembly | Check for open circuit and defective connection (arc marks) due to looseness | 13 to 17 |
| *e | Check HV battery | Check whether HV battery voltage has drastically dropped below normal range | 18, 19 |
Refer to the description for DTC P0AE411.
The hybrid vehicle control ECU assembly monitors the high-voltage wiring between the HV battery and the inverter with converter assembly and detects the following malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | Note |
|---|---|---|---|---|---|---|
| P300449 | High Voltage Power Resource Circuit Short during Pre-Charge | Although a system main relay operation signal was sent when the power switch was operated, the system voltage is not sufficiently increased after boosting and the HV battery current does not flow.
High-voltage circuit malfunctions between the HV battery and inverter with converter assembly. The EV electric battery fuse is blown, the service plug grip is removed, the system main resistor is blown, SMRP or SMRB remains open, or the high-voltage cable has an open circuit. (2 trip detection logic) |
·
HV battery junction block assembly ·
HV floor under wire ·
Inverter with converter assembly ·
No. 1 HV supply stack sub-assembly ·
No. 2 HV supply stack sub-assembly ·
Hybrid battery terminal block ·
Electric vehicle battery plug assembly ·
Wire harness or connector |
Does not come on | Master Warning:
Comes on |
SAE Code:
P3004 |
| DTC No. | Data List |
|---|---|
| P300449 | ·
Hybrid/EV Battery Voltage ·
Hybrid/EV Battery Current ·
VL-Voltage before Boosting ·
VH-Voltage after Boosting |
The following items can be helpful when performing repairs:
Ready Signal
Inter Lock Switch
SMRP Status
SMRB Status
SMRG Status
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Connect the GTS to the DLC3.
Turn the power switch on (IG) and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for 2 minutes or more.
Turn the power switch on (IG) and turn the GTS on.
Turn the power switch on (READY) and wait for 3 minutes or more.
According to the display on the GTS, read the Data List and monitor the values of "Hybrid/EV Battery Voltage" and "VL-Voltage before Boosting" for 3 minutes. If the difference between "Hybrid/EV Battery Voltage" and "VL-Voltage before Boosting" is always less than 50 V, the vehicle has returned to normal.
Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
Check the DTC judgment result.
If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE, perform driving pattern again.
Refer to the wiring diagram for DTC P0AA649.
Refer to the wiring diagram for the HV battery high-voltage line circuit.
Refer to the precautions before inspecting high voltage circuit.
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control, Motor Generator, HV Battery / Trouble Codes.
Check for DTCs.
| Result | Proceed to |
|---|---|
| P300449 only is output, or DTCs except the ones in the table below are also output. | A |
| DTCs of hybrid control system in the tables below are output. | B |
| DTCs of motor generator control system in the tables below are output. | C |
| DTCs of hybrid battery system in the tables below are output. | D |
| Malfunction Content | System | Relevant DTC | |
|---|---|---|---|
| Microcomputer malfunction | Hybrid control system | P0A1B49 | Drive Motor "A" Control Module Internal Electronic Failure |
| P060647 | Hybrid/EV Powertrain Control Module Processor Watchdog / Safety MCU Failure | ||
| P060687 | Hybrid/EV Powertrain Control Module Processor to Monitoring Processor Missing Message | ||
| P060A47 | Hybrid/EV Powertrain Control Module Monitoring Processor Watchdog / Safety MCU Failure | ||
| P060A87 | Hybrid/EV Powertrain Control Module Processor from Monitoring Processor Missing Message | ||
| P1C9E9F | Hybrid/EV System Reset Stuck Off | ||
| P060B49 | Hybrid/EV Powertrain Control Module A/D Processing Internal Electronic Failure | ||
| Motor generator control system | P0A1B1F | Generator Control Module Circuit Intermittent | |
| P0A1A47 | Generator Control Module Watchdog / Safety μC Failure | ||
| P0A1A49 | Generator Control Module Internal Electronic Failure | ||
| P1C2A1C | Generator A/D Converter Circuit Circuit Voltage Out of Range | ||
| P1C2A49 | Generator A/D Converter Circuit Internal Electronic Failure | ||
| P313383 | Communication Error from Generator to Drive Motor "A" Value of Signal Protection Calculation Incorrect | ||
| P313386 | Communication Error from Generator to Drive Motor "A" Signal Invalid | ||
| P313387 | Communication Error from Generator to Drive Motor "A" Missing Message | ||
| Hybrid battery system | P060B49 | Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure | |
| P060687 | Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message | ||
| P060A47 | Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure | ||
| P060A87 | Hybrid/EV Battery Energy Control Module Processor from Monitoring Processor Missing Message | ||
| P060B16 | Hybrid/EV Battery Energy Control Module A/D Processing Circuit Voltage Below Threshold | ||
| P0E2D00 | Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance | ||
| Power source circuit malfunction | Motor generator control system | P06D61C | Generator Control Module Offset Power Circuit Voltage Out of Range |
| Communication system malfunction | Hybrid control system | P312387 | Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message |
| U011187 | Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message | ||
| Sensor and actuator circuit malfunction | Hybrid control system | P0AD915 | Hybrid/EV Battery Positive Contactor Circuit Short to Auxiliary Battery or Open |
| P0AD911 | Hybrid/EV Battery Positive Contactor Circuit Short to Ground | ||
| P0AE415 | Hybrid/EV Battery Precharge Contactor Circuit Short to Auxiliary Battery or Open | ||
| P0AE411 | Hybrid/EV Battery Precharge Contactor Circuit Short to Ground | ||
| P0ADD15 | Hybrid/EV Battery Negative Contactor Circuit Short to Auxiliary Battery or Open | ||
| P0ADD11 | Hybrid/EV Battery Negative Contactor Circuit Short to Ground | ||
| P0B231C | Hybrid/EV Battery "A" Voltage Sensor Voltage Out of Range | ||
| P0ABF00 | Hybrid/EV Battery Current Sensor "A" Circuit Range/Performance | ||
| Hybrid battery system | P0ABF11 | Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground | |
| P0B0E11 | Hybrid/EV Battery Current Sensor "B" Circuit Short to Ground | ||
| P0B0E15 | Hybrid/EV Battery Current Sensor "B" Circuit Short to Auxiliary Battery or Open | ||
| P0ABF15 | Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open | ||
| P301A1C | Hybrid Battery Stack 1 Cell Voltage Detection Voltage Out of Range | ||
| P1A001C | Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range | ||
| P1AFD1C | Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range | ||
| P0ABF28 | Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure | ||
| P0ABF2A | Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range | ||
| P1CBB12 | Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery | ||
| P1CBB14 | Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open | ||
| P0B1362 | Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure | ||
| System malfunction | Hybrid control system | P0C7600 | Hybrid/EV Battery System Discharge Time Too Long |
| P0D2D1C | Drive Motor "A" Inverter Voltage Sensor Voltage Out of Range | ||
| P1C8149 | High Voltage Power Resource Circuit Consumption Circuit Short | ||
| P1C8249 | High Voltage Power Resource Circuit Over Loading | ||
| P1C8349 | High Voltage Power Resource Circuit Voltage Sensor after Boosting Malfunction | ||
| P0A1F94 | Hybrid/EV Battery Energy Control Module Unexpected Operation | ||
| Motor generator control system | P0D2D16 | Drive Motor "A" Inverter Voltage Sensor(VH) Circuit Voltage Below Threshold | |
| P0D2D17 | Drive Motor "A" Inverter Voltage Sensor(VH) Circuit Voltage Above Threshold | ||
| P1CB69E | Drive Motor "A" Inverter Voltage Sensor(VH) Stuck On | ||
| P0CA300 | DC/DC Converter Step Up Voltage Performance | ||
P300449 may be output as a result of the malfunction indicated by the DTCs above.
The chart above is listed in inspection order of priority.
Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)
Turn the power switch off.
A
B
C
for 2WD:
for AWD:
D
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Read the freeze frame data of DTC P300449.
| Freeze Frame Data Itm | Specified Condition |
|---|---|
| VH-Voltage after Boosting | Below 50 V [*1] |
| Hybrid/EV Battery Voltage - VL-Voltage before Boosting | -40 to 40 V [*2] |
| Result | Cause | Proceed to |
|---|---|---|
| Specified condition [*1] and [*2] are met | Inverter | A |
| Except above | Other | B |
Turn the power switch off.
A
for 2WD:
for AWD:
B
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Result | Proceed to |
|---|---|
| OK | A |
| NG (The connector is not connected securely.) | B |
| NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) | C |
A
B
C
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 HV battery cover panel RH.
Disconnect the M32 HV battery junction block assembly connector.
Disconnect the A30 hybrid vehicle control ECU assembly connector.
| *a | Front view of wire harness connector
(to Hybrid Vehicle Control ECU Assembly) |
| *b | Front view of wire harness connector
(to HV Battery Junction Block Assembly) |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A30-2 (SMRB) - M32-1 (SMRB) | Power switch off | Below 1 Ω |
| A30-16 (SMRP) - M32-2 (SMRP) | Power switch off | Below 1 Ω |
Reconnect the A30 hybrid vehicle control ECU assembly connector.
Reconnect the M32 HV battery junction block assembly connector.
Install the No. 1 HV battery cover panel RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 HV battery cover panel RH.
Disconnect the M32 HV battery junction block assembly connector.
| *a | Front view of wire harness connector
(to HV Battery Junction Block Assembly) |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| M32-3 (GND) - Body ground | Power switch off | Below 1 Ω |
Reconnect the M32 HV battery junction block assembly connector.
Install the No. 1 HV battery cover panel RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the HV battery junction block assembly.
Measure the resistance according to the value(s) in the table below.
| *a | Component without harness connected
(HV Battery Junction Block Assembly) |
- | - |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| z32-1 (+) - Y3-1 (CBI) | Auxiliary battery voltage applied between terminals M32-1 (SMRB) and M32-3 (GND) | Below 1 Ω |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| M32-1 (SMRB) - M32-3 (GND) | -40 to 80°C (-40 to 176°F) | 25.0 to 59.0 Ω |
Install the HV battery junction block assembly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the HV battery junction block assembly.
Measure the resistance according to the value(s) in the table below.
| *a | Component without harness connected
(HV Battery Junction Block Assembly) |
- | - |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| z21-1 (-) - Y4-1 (CEI) | Auxiliary battery voltage applied between terminals M32-2 (SMRP) and M32-3 (GND) | 24.3 to 29.7 Ω |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| M32-2 (SMRP) - M32-3 (GND) | -40 to 80°C (-40 to 176°F) | 140 to 290 Ω |
Install the HV battery junction block assembly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Check that the bolts for the floor under wire are tightened to the specified torque, the floor under wire is connected securely, and there are no contact problems.
T = 8.0 N*m (82 kgf*cm, 71 in.*lbf)
Disconnect the floor under wire from the inverter with converter assembly.
Check for arc marks on the terminals for the floor under wire and inverter with converter assembly.
| Result | Proceed to | |
|---|---|---|
| The terminals are connected securely and there are no contact problems. | There are no arc marks. | A |
| The terminals are not connected securely and there is a contact problem. | There are arc marks. | B |
| The terminals are not connected securely and there is a contact problem. | There are no arc marks. | C |
| The terminals are connected securely and there are no contact problems. | There are arc marks. | B |
Reconnect the floor under wire.
A
B
C
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 HV battery cover panel RH.
Check that the floor under wire is connected securely, and there are no contact problems.
Disconnect the floor under wire connectors from the HV battery junction block assembly.
Check for arc marks on the terminals of the HV floor wire and the HV battery junction block assembly.
| Result | Proceed to | |
|---|---|---|
| The terminals are connected securely and there are no contact problems. | There are no arc marks. | A |
| The terminals are not connected securely and there is a contact problem. | There are arc marks. | B |
| The terminals are not connected securely and there is a contact problem. | There are no arc marks. | C |
| The terminals are connected securely and there are no contact problems. | There are arc marks. | B |
Reconnect the floor under wire.
Install the No. 1 HV battery cover panel RH.
A
B
C
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 HV battery cover panel RH.
Disconnect the floor under wire connectors from the HV battery junction block assembly.
Disconnect the floor under wire connector from the inverter with converter assembly.
Measure the resistance according to the value(s) in the table below.
| *A | for 2WD | *B | for AWD |
| *a | Floor under wire
(Inverter with Converter Assembly Side) |
*b | Floor under wire
(HV Battery Junction Block Assembly Side) |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Y2-1 (CBI) - Y3-1 (CBI) | Power switch off | Below 1 Ω |
| Y2-2 (CEI) - Y4-1 (CEI) | Power switch off | Below 1 Ω |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Y1-1 (CBI) - Y3-1 (CBI) | Power switch off | Below 1 Ω |
| Y1-2 (CEI) - Y4-1 (CEI) | Power switch off | Below 1 Ω |
Be sure not to damage or deform the terminal being inspected.
Reconnect the floor under wire connector to the inverter with converter assembly.
Reconnect the floor under wire connectors to the HV battery junction block assembly.
Install the No. 1 HV battery cover panel RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 HV battery cover panel RH.
Check the 2 HV battery high voltage connectors are connected securely, and there are no contact problems.
Disconnect the 2 HV battery high voltage connectors from the HV battery junction block assembly.
Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
Check for arc marks on the terminals of the HV battery high voltage connectors and HV battery junction block assembly.
| Result | Proceed to | |
|---|---|---|
| The terminals are connected securely and there are no contact problems. | There are no arc marks. | A |
| The terminals are not connected securely and there is a contact problem. | There are arc marks. | B |
| The terminals are not connected securely and there is a contact problem. | There are no arc marks. | C |
| The terminals are connected securely and there are no contact problems. | There are arc marks. | B |
Reconnect the 2 HV battery high voltage connectors.
Install the No. 1 HV battery cover panel RH.
A
B
C
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 HV battery cover panel RH.
Check the HV battery high voltage connector and electric vehicle battery plug connector securely, and there are no contact problems.
Disconnect the HV battery high voltage connector and electric vehicle battery plug connector from the hybrid battery terminal block.
Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
Check for arc marks on the terminals of the HV battery high voltage connectors and hybrid battery terminal block.
| Result | Proceed to | |
|---|---|---|
| The terminals are connected securely and there are no contact problems. | There are no arc marks. | A |
| The terminals are not connected securely and there is a contact problem. | There are arc marks. | B |
| The terminals are not connected securely and there is a contact problem. | There are no arc marks. | C |
| The terminals are connected securely and there are no contact problems. | There are arc marks. | B |
Reconnect the HV battery high voltage connector and electric vehicle battery plug connector.
Install the No. 1 HV battery cover panel RH.
A
B
C
Be sure to wear insulated gloves and protective goggles.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the upper HV battery cover sub-assembly.
Check that the HV battery high voltage connector is connected securely, and there are no contact problems.
Disconnect the HV battery high voltage connector.
Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
Check for arc marks on the terminals of the HV battery high voltage connector.
| Result | Proceed to | |
|---|---|---|
| The terminals are connected securely and there are no contact problems. | There are no arc marks. | A |
| The terminals are not connected securely and there is a contact problem. | There are arc marks. | B |
| The terminals are not connected securely and there is a contact problem. | There are no arc marks. | C |
| The terminals are connected securely and there are no contact problems. | There are arc marks. | B |
Connect the HV battery high voltage connector.
Install the upper HV battery cover sub-assembly.
A
B
C
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 HV battery cover panel RH.
Disconnect the 2 electric vehicle battery plug assembly connectors.
Measure the resistance according to the value(s) in the table below.
| *a | Electric Vehicle Battery Plug Assembly Connector
(HV Battery Junction Block Assembly Side) |
*b | Electric Vehicle Battery Plug Assembly Connector
(Hybrid Battery Terminal Block Side) |
| *c | Service Plug Grip Removed
(Service Plug Grip Connecting Terminals) |
- | - |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| z32-1 (+) - Service plug grip connecting terminal 1 | Power switch off | Below 1 Ω |
| z31-1 - Service plug grip connecting terminal 2 | Power switch off | Below 1 Ω |
Reconnect the 2 electric vehicle battery plug assembly connectors.
Install the No. 1 HV battery cover panel RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 HV battery cover panel RH.
Disconnect the HV battery high voltage connector and electric vehicle battery plug assembly connector from the hybrid battery terminal block.
Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
| *a | Component without harness connected
(Hybrid Battery Terminal Block) |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| z31-1 - z30-1 | Power switch off | Below 1 Ω |
Reconnect the HV battery high voltage connector and electric vehicle battery plug assembly connector to the hybrid battery terminal block.
Install the No. 1 HV battery cover panel RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Be sure to wear insulated gloves and protective goggles.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the upper HV battery cover sub-assembly.
Disconnect the HV battery high voltage connector from the hybrid battery terminal block.
Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
Disconnect the HV battery high voltage connector.
Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
| *a | No. 2 HV Supply Stack Sub-assembly Connector
(Hybrid Battery Terminal Block Side) |
| *b | No. 2 HV Supply Stack Sub-assembly Connector
(No. 1 HV Supply Stack Sub-assembly Side) |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| z30-1 - A-1 | Power switch off | 50 V or higher |
Do not allow the probes of the electrical tester to contact each other during this inspection.
Reconnect the 2 HV battery high voltage connectors.
Install the upper HV battery cover sub-assembly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Be sure to wear insulated gloves and protective goggles.
Check that the service plug grip is not installed.
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the upper HV battery cover sub-assembly.
Remove the electric vehicle battery plug assembly.
Disconnect the HV battery high voltage connector from the HV battery junction block assembly.
Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
Disconnect the HV battery high voltage connector.
Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.
| *a | No. 1 HV Supply Stack Sub-assembly Connector
(HV Battery Junction Block Assembly Side) |
| *b | No. 1 HV Supply Stack Sub-assembly Connector
(No. 2 HV Supply Stack Sub-assembly Side) |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| z21-1 (-) - A-1 | Power switch off | 50 V or higher |
Do not allow the probes of the electrical tester to contact each other during this inspection.
Reconnect the 2 HV battery high voltage connectors.
Install the electric vehicle battery plug assembly.
Install the upper HV battery cover sub-assembly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check for intermittent problems.
| Result | Proceed to |
|---|---|
| Problem symptom does not recur. | A |
| Problem symptom recurs. | B |
Since 2 trip detection logic is used, the DTC detection condition must be met twice.
If DTC P300449 is output again after performing the inspection, replace the inverter with converter assembly. If DTC P300449 is not output again, replace the HV battery junction block assembly.
A
B
for 2WD:
for AWD:
| Proceed to |
|---|
| NEXT |
NEXT
| Result | Proceed to |
|---|---|
| Difference between "Hybrid/EV Battery Voltage" and "VL-Voltage before Boosting" is always less than 50 V. | A |
| Difference between "Hybrid/EV Battery Voltage" and "VL-Voltage before Boosting" is 50 V or more. | B |
A
B