DTC Diagnosis Procedure
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK STOP LAMP SWITCH CIRCUIT
- Turn ignition switch OFF.
- Check the stop lamp when depressing and releasing the brake pedal.
Brake pedal
Stop lamp
Fully released
Not illuminated
Slightly depressed
Illuminated
Is the inspection result normal?
YES
GO TO 4.
NO
GO TO 2.
- CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
- Disconnect stop lamp switch harness connector.
- Check the voltage between stop lamp switch harness connector and ground.
+
-
Voltage
Stop lamp switch
Connector
Terminal
E38
1
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 3.
NO
Perform the trouble diagnosis for power supply circuit.
- CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT
- Disconnect stop lamp switch harness connector.
- Disconnect ECM harness connector.
- Check the continuity between stop lamp switch harness connector and ECM harness connector.
+
-
Continuity
Stop lamp switch
ECM
Connector
Terminal
Connector
Terminal
E38
2
E16
139
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace error-detected parts.
- CHECK STOP LAMP SWITCH
Refer to Component Inspection (Stop Lamp Switch) .
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
Replace stop lamp switch. Refer to Exploded View .