Compressor Clutch Does Not Engage
TEST DESCRIPTIONSteps 1-7:
Steps 8-17:
Steps 18-29:
Step 30-41:
The numbers below refer to the step numbers on the diagnostic table.
2. The A/C compressor relay output is disabled if engine coolant temperature is above 121°C (250°F). The engine coolant indicator will illuminate at this temperature.
5. The HVAC control module is inoperative when the module does not respond to an operator control request.
8. If the fused jumper opens during this step the A/C request signal circuit is short to voltage.
10. If the fused jumper opens during this step the A/C pressure sensor signal is short to voltage.
18. If the fused jumper opens during this step the A/C compressor clutch supply voltage circuit is short to ground.
22. When the blower motor is in the OFF position, a voltage is applied to the OFF blower motor control circuit. The A/C system will not operate it a voltage is applied to the OFF blower motor control circuit.