Body Control System (DTC/Circuit Diagnosis)
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
- Turn the ignition switch OFF.
- Disconnect BCM connector M18 and combination switch connector.
- Check continuity between BCM connector and combination switch connector.
Signal
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
OUTPUT 1
M18
14
M28
12
Yes
OUTPUT 2
13
14
OUTPUT 3
12
5
OUTPUT 4
11
2
OUTPUT 5
10
8
Is the inspection result normal?
YES
GO TO 2.
NO
Repair or replace harness or connectors.
- CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check continuity between BCM connector and ground.
Signal
BCM
Ground
Continuity
Connector
Terminal
OUTPUT 1
M18
14
No
OUTPUT 2
13
OUTPUT 3
12
OUTPUT 4
11
OUTPUT 5
10
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness or connectors.
- CHECK BCM INPUT VOLTAGE
- Connect BCM connector M18 and combination switch connector.
- Turn the ignition switch ON.
- Check voltage between BCM connector and ground.
Signal
BCM
Ground
Voltage
Connector
Terminal
OUTPUT 1
M18
14
--
Refer to Reference Value .
OUTPUT 2
13
OUTPUT 3
12
OUTPUT 4
11
OUTPUT 5
10
Is the inspection result normal?
YES
Replace BCM. Refer to Removal and Installation .
NO
Replace the combination switch. Refer to Removal and Installation .