ECU Power Source Circuit [08/2016 - ]: Procedure
- CHECK DRIVING SUPPORT ECU ASSEMBLY (B VOLTAGE)
- Disconnect the E71 driving support ECU assembly connector.
*a Front view of wire harness connector
(to Driving Support ECU Assembly) - Turn the ignition switch to ON.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition E71-7 (B) - Body ground Ignition switch ON 11 to 14 V - Turn the ignition switch off.
- Reconnect the E71 driving support ECU assembly connector.
Result
Proceed to OK NG
Result: 2
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
Result: 1
OK
See step 2
- Disconnect the E71 driving support ECU assembly connector.
- CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - BODY GROUND)
- Disconnect the E71 driving support ECU assembly connector.
*a Front view of wire harness connector
(to Driving Support ECU Assembly) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition E71-28 (GND) - Body ground Always Below 1 Ω - Connect the E71 driving support ECU assembly connector.
Result
Proceed to OK NG
Result: 1
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE: PROBLEM SYMPTOMS TABLE [08/2016 - ]
Result: 2
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Disconnect the E71 driving support ECU assembly connector.