Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: HVAC Schematics DEFINITION: Air does not flow correctly from the air distribution outlets. | ||||
1 | Did you perform the HVAC Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does air flow from the correct auxiliary air distribution outlets? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Test the ignition-3 voltage circuit of the auxiliary mode actuator for an open, high resistance or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 4 |
4 | Test the ground circuit of the auxiliary mode actuator for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 5 | |
5 |
Does the voltage measure near the specified value? | B+ | Go to Step 6 | Go to Step 7 |
6 | Place the auxiliary mode switch in the floor position. Does the voltage measure near the specified value. | 0.25 V | Go to Step 9 | Go to Step 8 |
7 | Test the auxiliary mode door control circuit of the auxiliary mode actuator for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 10 |
8 | Test the auxiliary mode door control circuit of the auxiliary mode actuator for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 10 |
9 | Inspect for poor connections at the harness connector of the auxiliary mode actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 11 |
10 | Inspect for poor connections at the harness connector of the auxiliary HVAC control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 12 |
11 | Replace the auxiliary mode actuator. Refer to Auxiliary Mode Valve Actuator Replacement . Did you complete the replacement? | -- | Go to Step 13 | -- |
12 | Replace the auxiliary HVAC control module. Refer to Auxiliary Heater and Air Conditioning Control Replacement . Did you complete the replacement? | -- | Go to Step 13 | -- |
13 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
