Exterior Lighting System (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 HEADLAMP (LO) FUSES
- Turn the ignition switch OFF.
- Check that the following fuses are not open.
Unit
Location
Fuse No.
Capacity
Headlamp LO (LH)
IPDM E/R
37
15 A
Headlamp LO (RH)
IPDM E/R
36
15 A
Is the fuse open?
YES
Replace the fuse after repairing the affected circuit.
NO
GO TO 2.
- CHECK HEADLAMP (LO) OUTPUT VOLTAGE
CONSULT
- Turn the ignition switch OFF.
- Disconnect the front combination lamp harness connector E233 or E238.
- Turn the ignition switch ON.
- Select EXTERNAL LAMP of IPDM E/R active test item.
- With EXTERNAL LAMP ON, check the voltage between the front combination lamp harness connector and ground.
(+)
(-)
Voltage
Connector
Terminal
RH
E238
2
Ground
Battery voltage
LH
E233
Is battery voltage present?
YES
GO TO 4.
NO
GO TO 3.
- CHECK HEADLAMP (LO) CIRCUIT FOR OPEN
- Turn the ignition switch OFF.
- Disconnect IPDM E/R connector E217.
- Check continuity between the IPDM E/R harness connector and the front combination lamp harness connector.
IPDM E/R
Front combination lamp
Continuity
Connector
Terminal
Connector
Terminal
E217
75
RH
E238
2
Yes
76
LH
E233
Does continuity exist?
YES
Replace IPDM E/R. Refer to Removal and Installation .
NO
Repair the harness or connector.
- CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT
Check continuity between the front combination lamp harness connector and ground.
Connector
Terminal
--
Continuity
RH
E238
1
Ground
Yes
LH
E233
Does continuity exist?
YES
Replace front combination lamp.
NO
Repair the harness or connector.