Too Cold in Vehicle - Auxiliary (Passenger Van w/Aux)

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Test Description

The numbers below refer to the step numbers on the diagnostic table.

4. This checks for proper cooling system operation.

9. This checks for proper air temperature actuator movement.

10. The voltage will vary between 0-12 volts during normal operation. The front auxiliary HVAC control assembly connector must be connected during this step. This checks for proper operation of the air temperature actuator door control circuit and the front auxiliary HVAC control assembly.

13. The voltage will vary between 0-12 volts during normal operation. The front auxiliary HVAC control assembly connector must be connected during this step. This checks for proper operation of the air temperature actuator door control circuit and the front auxiliary HVAC control assembly.

14. The auxiliary blower motor switch control circuit should not have continuity to ground when front auxiliary HVAC control assembly is in any position except REAR CNTL.

16. The voltage will vary between 0-12 volts during normal operation. The rear auxiliary HVAC control assembly connector must be connected during this step. This checks for proper operation of the air temperature actuator door control circuit and the rear auxiliary HVAC control assembly.

20. This step checks complete auxiliary air temperature door control circuit from the front HVAC control assembly to the auxiliary HVAC control processor to the auxiliary air temperature actuator.

Fig 1: Too Cold In Vehicle - Auxiliary (Passenger Van w/Aux) (1 Of 4)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Too Cold In Vehicle - Auxiliary (Passenger Van w/Aux) (2 Of 4)

Courtesy of GENERAL MOTORS CORP.

Fig 3: Too Cold In Vehicle - Auxiliary (Passenger Van w/Aux) (3 Of 4)

Courtesy of GENERAL MOTORS CORP.

Fig 4: Too Cold In Vehicle - Auxiliary (Passenger Van w/Aux) (4 Of 4)

Courtesy of GENERAL MOTORS CORP.