Telematics 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 FUSES
Check that the following fuses are not blown.
Terminal No.
Signal name
Fuse No.
1
Battery power supply
15 (15 A)
2
ACC power supply
65 (10 A)
10
Ignition signal
29 (5 A)
Are the fuses blown?
YES
Replace the blown fuse after repairing the affected circuit.
NO
GO TO 2.
- CHECK POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect TCU connector M47.
- Check voltage between TCU connector M47 and ground.
TCU
Ground
Condition
Voltage
(Approx.)
Connector
Terminal
M47
1
--
Ignition switch: OFF
Battery voltage
2
Ignition switch: ACC
10
Ignition switch: ON
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness or connectors.
- CHECK GROUND CIRCUIT
- Turn ignition switch OFF.
- Check continuity between TCU connector M47 and ground.
TCU
Ground
Continuity
Connector
Terminal
M47
9
--
Yes
28
29
Is the inspection result normal?
YES
Inspection End.
NO
Repair or replace harness or connectors.