Infiniti QX56 (JA60). Manual - part 613
INSUFFICIENT COOLING
HAC-109
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
NO
>> Check water valve circuit. Refer to
HAC-73, "Water Valve Diagnosis Procedure"
.
9.
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 10.
10.
CHECK REFRIGERANT PURITY
1. Connect recovery/recycling equipment to vehicle.
2. Confirm refrigerant purity in supply tank using recovery/recycling and refrigerant identifier.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Check contaminated refrigerant. Refer to
HAC-121, "Working with HFC-134a (R-134a)"
.
11.
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
HAC-109, "Diagnostic Work Flow"
.
NO
>> GO TO 12.
12.
CHECK REFRIGERANT PRESSURE
Check refrigerant pressure with manifold gauge connected. Refer to
.
Is the inspection result normal?
YES
>> Perform performance test diagnoses. Refer to
HAC-109, "Diagnostic Work Flow"
.
NO
>> GO TO 13.
13.
CHECK AIR DUCTS
Check ducts for air leaks.
Is the inspection result normal?
YES
>> System OK.
NO
>> Repair air leaks.
Diagnostic Work Flow
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