Central Gateway ECU Communication Stop Mode [10/2015 - ]: Procedure
- CHECK FOR OPEN IN CAN BUS LINES (CENTRAL GATEWAY ECU BRANCH LINE)
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the D127 central gateway ECU connector.
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to Central Gateway ECU)Standard Resistance
Tester Connection Condition Specified Condition D127-18 (CA4H) - D127-17 (CA4L) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
Result:
NG
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (CENTRAL GATEWAY ECU)
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to Central Gateway ECU)Standard Resistance
Tester Connection Condition Specified Condition D127-10 (GND) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω - Reconnect the cable to the negative (-) battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition D127-1 (BATT) - Body ground Always 11 to 14 V D127-2 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V D127-11 (IG1) - Body ground Engine switch on (IG) 11 to 14 V D127-12 (IG2) - Body ground Engine switch on (IG) 11 to 14 V *a Front view of wire harness connector
(to Central Gateway ECU)
Result:
OK
REPLACE CENTRAL GATEWAY ECU. Refer to REMOVAL [10/2015 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.