Before replacing or repairing air conditioning components,
first determine if the malfunction is due to the refrigerant charge, air
flow or compressor.
Use the table below to help you find the cause of the
problem. The numbers indicate the priority of the likely cause of the
problem. Check each part in order. If necessary, replace these parts.
After correcting the malfunction, check the complete system to ensure that performance is satisfactory.
Standard:
Symptom
| Suspected Area
|
No blower operation
| 1. Blower fuse
|
2. Blower relay
|
3. Blower motor
|
4. Power mosfet
|
5. Blower speed control switch
|
6. Wire harness
|
No air temperature control
| 1. Engine coolant capacity
|
2. Heater control assembly
|
No compressor operation
| 1. Refrigerant capacity
|
2. A/C fuse
|
3. Compressor
|
4. A/C pressure transducer
|
5. A/C switch
|
6. Evaporator temperature sensor
|
7. Wire harness
|
Vented air not cold
| 1. Refrigerant capacity
|
2. Refrigerant pressure
|
3. Drive belt
|
4. Compressor
|
5. A/C pressure transducer
|
6. Evaporator temperature sensor
|
7. A/C switch
|
8. Heater control assembly
|
9. Wire harness
|
Insufficient cooling
| 1. Refrigerant capacity
|
2. Drive belt
|
3. Compressor
|
4. Condenser
|
5. Expansion valve
|
6. Evaporator
|
7. Refrigerant lines
|
8. A/C pressure transducer
|
9. Heater control assembly
|
No engine idle-up when A/C switch is ON
| 1. Engine ECM
|
2. Wire harness
|
No air inlet control
| 1. Heater control assembly
|
No mode control
| 1. Heater control assembly
|
2. Mode actuator
|
No cooling fan operation
| 1. Cooling fan fuse
|
2. Fan motor
|
3. Engine ECM
|
4. Wire harness
|
Other information:
Components Location
1. Rear shock absorber2. Rear upper arm rear 3. Rear trailing arm4. Rear assist arm5. Rear sub frame6. Rear upper arm front7. Rear stabilizer bar8. Rear lower arm
...
Circuit Diagram
ESC connector input/output
Pin NoDescriptionCurrent(m/A)Resistance(m/?)MAX1Battery 2 (+) 137102POWERTRAIN CAN LOW302503---4---5---6---7---8---9---10---11Parking brake switch1025012---13Ground1371014POWERTRAIN CAN HIGH3025015Auto Hold Switch 1025016Stop Lamp Switch1025017Wheel s ...