Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM:

A/C system does not come on.

Fig 1: Auto Amp. Power/Ground Circuits
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK POWER SUPPLY CIRCUIT FOR AUTO AMP.

Fig 2: Checking Auto Amp Power Supply Circuit (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Checking Auto Amp Power Supply Circuit (2 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 2.
2. NG: Check auto amp. ground circuit.
  - Check 10A fuse [Nos. 12 and 19, located in the fuse block (JIB)] and 15A fuses [Nos. 10 and H| 11, located in the fuse block (JIB)].
  - If fuses are OK, check for open circuit in wiring harness. Repair or replace as necessary.
  - If fuses are NG, replace fuse and check wiring harness for short circuit. Repair or replace as necessary.
CHECK BODY GROUND CIRCUIT FOR AUTO AMP.

Fig 4: Checking Auto Amp Body Ground Circuit (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking Auto Amp Body Ground Circuit (2 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Yes or No
1. Yes:
  - Replace auto amp.
  - INSPECTION END
2. No: Repair or replace harness.