Heater & Air Conditioning Control System (DTC/Circuit Diagnosis)
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 VOLTAGE BETWEEN AMBIENT SENSOR AND GROUND
- Disconnect ambient sensor connector.
- Turn ignition switch ON.
- Check voltage between ambient sensor harness connector E19 terminal 1 and ground.
1 - Ground
: Approx. 5 V
Is the inspection result normal?
YES
GO TO 2.
NO
GO TO 4.
- CHECK CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
- Turn ignition switch OFF.
- Disconnect front air control connector.
- Check continuity between ambient sensor harness connector E19 terminal 2 and front air control harness connector M53 terminal 16.
2 - 16
: Continuity should exist.
Is the inspection result normal?
YES
GO TO 3.
NO
Repair harness or connector.
- CHECK AMBIENT SENSOR
Check ambient sensor. Refer to Component Inspection .
Is the inspection result normal?
YES
Replace front air control. Refer to Removal and Installation - Front Air Control .
NO
Replace ambient sensor. Refer to Removal and Installation .
- CHECK CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
- Turn ignition switch OFF.
- Disconnect front air control connector.
- Check continuity between ambient sensor harness connector E19 terminal 1 and front air control harness connector M53 terminal 15.
1 - 15
: Continuity should exist.
- Check continuity between ambient sensor harness connector E19 terminal 1 and ground.
1 - Ground
: Continuity should not exist.
Is the inspection result normal?
YES
Replace front air control. Refer to Removal and Installation - Front Air Control .
NO
Repair harness or connector.