Step | Action | Values | Yes | No | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: Air does not flow correctly from the auxiliary air distribution outlets. | ||||||||||||||||
1 | Did you perform the HVAC Diagnostic System Check? | -- | Go to Step 2 | |||||||||||||
2 |
Is the auxiliary blower motor OFF? | -- | Go to Step 3 | |||||||||||||
3 |
Is the auxiliary blower motor OFF? | -- | Go to Step 4 | |||||||||||||
4 | Place the front auxiliary blower motor switch in each speed position. Does the auxiliary blower motor operate in any of the speed positions? | -- | Go to Step 5 | |||||||||||||
5 | Does the auxiliary blower motor operate at the desired speeds? | -- | Go to Step 6 | |||||||||||||
6 |
Does the auxiliary blower motor operate at the desired speeds? | -- | Go to Step 7 | |||||||||||||
7 |
Does air flow from the auxiliary floor outlets? | -- | Go to Step 8 | Go to Step 9 | ||||||||||||
8 | Place the mode switch in the vent position. Does air flow from the upper auxiliary outlets? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 9 | ||||||||||||
9 |
Does the test lamp illuminate? | -- | Go to Step 10 | Go to Step 18 | ||||||||||||
10 | 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 21 | Go to Step 11 | ||||||||||||
11 |
Does the voltage measure within the specified range? | 10-12 V | Go to Step 12 | Go to Step 13 | ||||||||||||
12 | Place the mode switch in the floor position. Does the voltage measure near the specified value? | 0 V | Go to Step 15 | Go to Step 14 | ||||||||||||
13 | 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 21 | Go to Step 17 | ||||||||||||
14 | 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 21 | Go to Step 17 | ||||||||||||
15 | Inspect the auxiliary mode door and actuator for the following conditions:
Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 16 | ||||||||||||
16 | 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 21 | Go to Step 19 | ||||||||||||
17 | Inspect for poor connections at the harness connector of the 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 21 | Go to Step 20 | ||||||||||||
18 | Repair the ignition 3 voltage circuit of the auxiliary mode actuator. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 21 | -- | ||||||||||||
19 | Replace the auxiliary mode actuator. Refer to Auxiliary Mode Valve Actuator Replacement . Did you complete the replacement? | -- | Go to Step 21 | -- | ||||||||||||
20 | Replace the HVAC control module. Refer to HVAC Control Module Replacement . Did you complete the replacement? | -- | Go to Step 21 | -- | ||||||||||||
21 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 | ||||||||||||
