Inspection Flow

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1. Press the AUTO switch.
2. Turn temperature control dial (driver) counterclockwise until 16°C (60°F) is displayed.
3. Check for cold air at discharge air outlets.
Can the symptom be duplicated?

YES: GO TO 3.

NO: GO TO 2.
CHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to "OPERATIONAL CHECK (FRONT) ".

Does another symptom exist?

YES: Refer to "SYMPTOM TABLE ".

NO: System OK.
CHECK FOR SERVICE BULLETINS
Check for any service bulletins.

GO TO 3.
PERFORM SELF-DIAGNOSIS
Perform self-diagnosis. Refer to "A/C SYSTEM SELF-DIAGNOSIS FUNCTION ".

OK or NG

OK: GO TO 5.

NG: Refer to "SELF-DIAGNOSIS CODE CHART ".
CHECK DRIVE BELTS
Check compressor belt tension. Refer to "CHECKING DRIVE BELTS ".

OK or NG

OK: GO TO 6.

NG: Adjust or replace compressor belt. Refer to "REMOVAL AND INSTALLATION ".
CHECK AIR MIX DOOR OPERATION
Check and verify air mix door mechanism for smooth operation.

Does air mix door operate correctly?

YES: GO TO 7.

NO: Repair or replace air mix door control linkage.
CHECK COOLING FAN MOTOR OPERATION
Check and verify cooling fan motor for smooth operation. Refer to "DESCRIPTION ".

Does cooling fan motor operate correctly?

YES: GO TO 8.

NO: Check cooling fan motor. Refer to "DTC P1217 ENGINE OVER TEMPERATURE ".
CHECK RECOVERY/RECYCLING EQUIPMENT BEFORE USAGE
Check recovery/recycling equipment before connecting to vehicle. Verify there is no pressure in the recovery/recycling equipment by checking the gauges. If pressure exists, recover refrigerant from equipment lines.

GO TO 9.
CHECK REFRIGERANT PURITY
1. Connect recovery/recycling equipment to vehicle.
2. Confirm refrigerant purity in supply tank using recovery/recycling and refrigerant identifier.
OK or NG

OK: GO TO 10.

NG: Check contaminated refrigerant. Refer to "CONTAMINATED REFRIGERANT ".
CHECK FOR EVAPORATOR FREEZE UP
Start engine and run A/C. Check for evaporator freeze up.

Does evaporator freeze up?

YES: Perform performance test diagnoses. Refer to "PERFORMANCE TEST DIAGNOSES ".

NO: GO TO 11.
CHECK REFRIGERANT PRESSURE
Check refrigerant pressure with manifold gauge connected. Refer to "TEST READING ".

OK or NG

OK: Perform performance test diagnoses. Refer to "PERFORMANCE TEST DIAGNOSES ".

NG: GO TO 12.
CHECK AIR DUCTS
Check ducts for air leaks.

OK or NG

OK: System OK.

NG: Repair air leaks.