Navigation ECU Communication Stop Mode [11/2015 - ]: Procedure
- CHECK FOR OPEN IN CAN BUS LINES (NAVIGATION RECEIVER ASSEMBLY BRANCH LINE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the G78 navigation receiver assembly connector.TEXT IN ILLUSTRATION
*a Front view of wire harness connector
(to Navigation receiver assembly) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition G78-9 (CANH) - G78-10 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
Result:
NG
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NAVIGATION RECEIVER ASSEMBLY)
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Disconnect the G76 navigation receiver assembly connector.
- Measure the resistance according to the value(s) in the table below.TEXT IN ILLUSTRATION
*a Front view of wire harness connector
(to Navigation receiver assembly)Standard Resistance
Tester Connection Condition Specified Condition G76-7 (GND1) - 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 G76-4 (+B1) - Body ground Ignition switch off 11 to 14 V G76-3 (ACC1) - Body ground Ignition switch ACC 11 to 14 V G78-1 (IG) - Body ground Ignition switch ON (IG) 11 to 14 V
Result:
OK
REPLACE NAVIGATION RECEIVER ASSEMBLY
Refer to REMOVAL [11/2015 - ] )
Result:
NG
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (POWER SOURCE TERMINAL)