Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
SCHEMATIC REFERENCE:
| ||||
1 | Did you perform the HVAC Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check |
2 |
Does the Pass HVAC Control parameter change state? | -- | Go to Step 3 | Go to Step 11 |
3 | Adjust the passenger temperature control from full COOL to full WARM. Did any of the red or blue indicators illuminate? | -- | Go to Step 4 | Go to Step 6 |
4 | Adjust the passenger temperature control from full COOL to full WARM. Did an indicator illuminate for each switch position except neutral? | -- | Go to Step 5 | Go to Step 11 |
5 |
Did all of the passenger temperature control indicators turn OFF? | -- | System OK | Go to Step 8 |
6 |
Did all of the red passenger temperature control indicators illuminate? | -- | Go to Step 12 | Go to Step 7 |
7 |
Does the voltage measure near the specified value? | B+ | Go to Step 10 | Go to Step 9 |
8 | Test the set temp bulbdrive circuit of the passenger temperature control 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 15 | Go to Step 12 |
9 | Test the set temp bulbdrive circuit of the passenger temperature control for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 12 |
10 | Test the ground circuit of the passenger temperature control for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 11 |
11 | Inspect for poor connections at the harness connector of the passenger temperature control. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 13 |
12 | Inspect for poor connections at the harness connector of the heater and A/C programmer. 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 15 | Go to Step 14 |
13 | Replace the passenger temperature control. Refer to Control Assembly Replacement - Passenger . Did you complete the repair? | -- | Go to Step 15 | -- |
14 | Replace the heater and A/C programmer. Refer to Programmer Replacement . Did you complete the repair? | -- | Go to Step 15 | -- |
15 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
