Problem Symptoms Table |
Symptom |
Suspect Area |
No blower operation |
1. Blower fuse |
2. Blower relay |
|
3. Blower motor |
|
4. Blower resistor, Power mosfet or PWM blower
module |
|
5. Blower speed control switch or knob |
|
6. Wire harness |
|
No air temperature control |
1. Engine coolant capacity |
2. Heater control assembly |
|
3. Temperature control actuator or cable |
|
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 |
|
8. High CAN |
|
No cool comes out |
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 |
|
10. High CAN |
|
11. Temperature control actuator or cable |
|
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 |
|
10. High CAN |
|
No engine idle-up when A/C switch ON |
1. Engine ECM |
2. Wire harness |
|
No air inlet control |
1. Heater control assembly |
2. Intake actuator |
|
No mode control |
1. Heater control assembly |
2. Mode control actuator or cable |
|
No cooling fan operation |
1. Cooling fan fuse |
2. Fan motor |
|
3. Blower resistor, Power mosfet or PWM blower
module |
|
4. Engine ECM |
|
5. Wire harness |
Engine overheat
If your temperature gauge indicates overheating, you will experience a loss of
power, or hear loud pinging or knocking, the engine is probably too hot. If this
happens, you should: 1.Pull off the ro ...
CVVT Oil Control Valve (OCV) Description
Continuous Variable Valve Timing (CVVT) system advances or retards the
valve timing of the intake and exhaust valve in accordance with the ECM control
signal which is calculated by the engine ...
Towing service
...