THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Start Function, HEV Model) B227111 IG Circuit Short to Ground
DESCRIPTION
This DTC is stored when a malfunction in the IG drive circuit or IG hold circuit of the certification ECU (smart key ECU assembly) or a malfunction in the IG output circuit between the output terminal of the certification ECU (smart key ECU assembly) and IG relay is detected.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| B227111 | IG Circuit Short to Ground | When either of the following conditions is met (1-trip detection logic*1):
·
The IG circuit of the certification ECU (smart key ECU assembly) is malfunctioning.*2 ·
The IG hold circuit of the certification ECU (smart key ECU assembly) is malfunctioning.*3 ·
There is a malfunction in a circuit outside of the certification ECU (smart key ECU assembly) circuit |
·
Certification ECU (smart key ECU assembly) ·
Power distribution box assembly ·
Wire harness or connector |
DTC Output Confirmation Operation:
Turn the ignition switch to ON. |
*1: Only detected while a malfunction is present and the ignition switch is ON.
*2: The IG circuit and IG hold circuit activate the IG relay.
*3: After the IG circuit turns on, even if the certification ECU (smart key ECU assembly) malfunctions, the IG hold circuit will maintain the power source mode in ON.
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| The ignition switch cannot be turned to ON (the hybrid control system cannot be started). | The power source mode cannot be changed to ON. |
| DTC No. | Data List and Active Test |
|---|---|
| B227111 | Power Source Control
·
IGP Relay Circuit (Outside) Monitor ·
IGR Relay Circuit (Outside) Monitor |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins.
Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
·The smart entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart entry and start system (for Start Function) after confirming that the communication systems are functioning properly.
·Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.
·After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
| *a | Front view of wire harness connector
(to Certification ECU (Smart Key ECU Assembly)) |
Disconnect the I222 certification ECU (smart key ECU assembly) connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition I222-6 (+B) - Body ground Ignition switch off 11 to 14 V
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to Certification ECU (Smart Key ECU Assembly)) |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition I222-29 (E) - Body ground Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
Disconnect the I223 certification ECU (smart key ECU assembly) connector.
Disconnect the 8B and 8C power distribution box assembly connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 8C-17 - I223-24 (IGPD) Always Below 1 Ω 8B-10 - I223-11 (IGRD) Always Below 1 Ω 8C-17 or I223-24 (IGPD) - Other terminals and body ground Always 10 kΩ or higher 8B-10 or I223-11 (IGRD) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the 8E power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 8C-17 - 8E-14 Always Below 1 Ω 8C-17 or 8E-14 - Other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Remove the IGP-MAIN relay from the No. 1 engine room relay block and No. 1 junction block assembly.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 8E-14 - No. 1 engine room relay block and No. 1 junction block assembly IGP-MAIN relay terminal 2 Always Below 1 Ω 8E-14 or No. 1 engine room relay block and No. 1 junction block assembly IGP-MAIN relay terminal 2 - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
| *1 | IGP-MAIN Relay |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 8B-10 - 8B-36 Always 20 Ω or higher 8B-10 - 8B-36 Always 20 Ω or higher 8B-10 or 8B-36 - Other terminals Always 10 kΩ or higher 8B-10 or 8B-36 - Other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG