Power Steering ECU Communication Stop Mode [09/2022 - ]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR OPEN IN CAN BUS LINES (POWER STEERING ECU WITH MOTOR ASSEMBLY MAIN LINE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the I21 power steering ECU with motor assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition I21-7 (CANH) - I21-8 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω *a Front view of wire harness connector
(to Power Steering ECU with Motor Assembly)Result
Result OK NG
Result:
NG
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (POWER STEERING ECU WITH MOTOR ASSEMBLY)
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Disconnect the I42 power steering ECU with motor assembly connector.
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to Power Steering ECU with Motor Assembly)- - Standard Resistance
Tester Connection Condition Specified Condition I42-2 (PGND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω - Reconnect the cable to the negative (-) auxiliary battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition I21-1 (IG) - Body ground Ignition switch ON 11 to 14 V Result
Result OK NG
Result:
OK
REPLACE POWER STEERING ECU WITH MOTOR ASSEMBLY
Refer to REMOVAL [09/2022 - 11/2022] , or refer to REMOVAL [11/2022 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)