RM38T0EC _51 Engine / Hybrid System _144957 HYBRID / BATTERY CONTROL _0604232 HYBRID CONTROL SYSTEM J

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  Shut Down Signal Circuit  


DESCRIPTION

The cause of the malfunction may be a shutdown signal.

Check whether there is a shutdown signal +B short circuit.

Related Parts Check
Area Inspection
HSDN terminal Check that the HSDN terminal voltage decreases to check for an open or short circuit while READY off (IG ON).
Hybrid vehicle control ECU, inverter, wire harness Check for open or short circuit in hybrid vehicle control ECU, inverter and wire harness.

SYSTEM DESCRIPTION

Power supply to the motor is cut off due to a shutdown signal sent from the hybrid vehicle control ECU to the motor generator control ECU (MG ECU).

WIRING DIAGRAM

A535292E02
2.417,0.344 2.729,0.542 0.313,0.198 10 false 1 2.417,0.698 2.729,0.896 0.313,0.198 10 false 9 2.417,1.073 2.729,1.271 0.313,0.198 10 false 26 2.417,1.396 2.729,1.594 0.313,0.198 10 false 4 2.417,1.75 2.729,1.948 0.313,0.198 10 false 12 4.552,1.021 4.865,1.219 0.313,0.198 10 false 9 4.542,1.5 4.854,1.698 0.313,0.198 10 false 1 3.333,0.49 4.813,0.771 1.479,0.281 10 false from PCU NO. 1 Fuse 4.427,1.188 4.875,1.417 0.448,0.229 10 false A197 4.823,1.052 5.354,1.302 0.531,0.25 10 false HSDN 4.833,1.677 5.365,1.927 0.531,0.25 10 false E1 4.74,2.271 6.917,2.688 2.177,0.417 10 false Hybrid Vehicle Control ECU 1.948,1.083 2.479,1.333 0.531,0.25 10 false HSDN 2,0.792 2.531,1.042 0.531,0.25 10 false IGC2 2.01,0.458 2.542,0.708 0.531,0.25 10 false IGC1 1.927,1.51 2.458,1.76 0.531,0.25 10 false GND1 1.927,1.844 2.458,2.094 0.531,0.25 10 false GND2 0.469,2.219 0.99,2.448 0.521,0.229 10 false A192 0.469,2.365 2.646,2.594 2.177,0.229 10 false Inverter with Converter Assembly 4.458,1.677 4.844,1.875 0.385,0.198 10 false I278

Refer to the wiring diagram for the ECU Power Source Circuit.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>ECU Power Source Circuit

CAUTION / NOTICE / HINT

This diagnostic procedure is referenced to in the diagnostic procedure of several DTCs.

If the result of this diagnostic procedure is normal, proceed as directed in the procedure for the DTC.

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>PRECAUTION


NOTICE:
·

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

·

When disconnecting and reconnecting the auxiliary battery

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART




PROCEDURE

1.CHECK HYBRID VEHICLE CONTROL ECU
a.

Turn the ignition switch to ON.


b.

Measure the voltage according to the value(s) in the table below.

A502139C80
4.719,0.25 5.135,0.5 0.417,0.25 2.458,0.26 2.875,0.51 0.417,0.25 1.833,2.333 2.396,1.271 true 6.25,2.313 5.792,1.281 true 0.271,0.167 0.583,0.323 0.313,0.156 10 false *a 1.625,2.354 2.167,2.552 0.542,0.198 10 false HSDN 6.219,2.354 6.531,2.51 0.313,0.156 10 false E1 2.51,0.292 3.052,0.49 0.542,0.198 10 false A197 4.792,0.281 5.333,0.479 0.542,0.198 10 false I278
*a Component with harness connected
(Hybrid Vehicle Control ECU) 		- -


Standard Voltage:
Tester Connection Condition Specified Condition
A197-9 (HSDN) - I278-1 (E1) Ignition switch ON Below 4.5 V



c.

Turn the ignition switch off.


Result:
Proceed to
OK
NG



OK

SHUTDOWN SIGNAL CIRCUIT NORMAL (PERFORM NEXT STEP FOR REFERENCED DTC)

NG

2.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY)
2.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY)
CAUTION:

Be sure to wear insulated gloves.


a.

Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.



b.

Disconnect the inverter with converter assembly connector.


c.

Disconnect the hybrid vehicle control ECU connectors.


d.

Connect the cable to the negative (-) auxiliary battery terminal.


e.

Turn the ignition switch to ON.


f.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
A192-26 (HSDN) or A197-9 (HSDN) - Body ground Ignition switch ON Below 1 V


NOTICE:

Turning the ignition switch to ON with the hybrid vehicle control ECU and inverter with converter assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.



g.

Turn the ignition switch off.


h.

Disconnect the cable from the negative (-) auxiliary battery terminal.


i.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
A192-26 (HSDN) - A192-1 (IGC1) Ignition switch off 10 kΩ or higher
A192-26 (HSDN) - A192-9 (IGC2) Ignition switch off 10 kΩ or higher
A197-9 (HSDN) - I278-8 (+B1) Ignition switch off 10 kΩ or higher
A197-9 (HSDN) - I278-10 (MREL) Ignition switch off 10 kΩ or higher



j.

Reconnect the hybrid vehicle control ECU connectors.


k.

Reconnect the inverter with converter assembly connector.


Result:
Proceed to
OK
NG



OK

3.CHECK INVERTER WITH CONVERTER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK INVERTER WITH CONVERTER ASSEMBLY
CAUTION:

Be sure to wear insulated gloves.


a.

Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.



b.

Disconnect the inverter with converter assembly connector.


c.
A515060C20
0.667,0.25 1.083,0.5 0.417,0.25 1.927,0.427 1.615,0.927 true 1.604,1.063 1.885,1.792 true 1.271,1.792 1.51,1.26 true 0.104,0.083 0.417,0.281 0.313,0.198 10 false *a 1.063,1.844 1.677,2.042 0.615,0.198 10 false HSDN 1.833,1.854 2.292,2.052 0.458,0.198 10 false IGC2 1.854,0.292 2.313,0.49 0.458,0.198 10 false IGC1 0.719,0.292 1.333,0.49 0.615,0.198 10 false A192
*a Component without harness connected
(Inverter with Converter Assembly)


Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
A192-26 (HSDN) - A192-1 (IGC1) Ignition switch off 10 kΩ or higher
A192-26 (HSDN) - A192-9 (IGC2) Ignition switch off 10 kΩ or higher



d.

Reconnect the inverter with converter assembly connector.


Result:
Proceed to
OK
NG



OK

REPLACE HYBRID VEHICLE CONTROL ECU

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL


NG

REPLACE INVERTER WITH CONVERTER ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>INVERTER WITH CONVERTER>REMOVAL