Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the Control Assembly Description and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Verify that the temperature control actuator motor is inoperative. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Inspect the A/C - Cruise fuse in the LH I/P Accessory Wiring Junction Block. Is the fuse open? | -- | Go to Step 4 | Go to Step 5 |
4 | Test for a short to ground on the ignition positive voltage of the heater - A/C control module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 14 |
5 |
Does the measured voltage vary within the specified range with the movement of the temperature control ? | 1- 12V | Go to Step 6 | Go to Step 7 |
6 |
Is the measured voltage within the specified value? | 9-14V | Go to Step 8 | Go to Step 9 |
7 |
Is the measured voltage within the specified value? | 9-14V | Go to Step 10 | Go to Step 11 |
8 |
Is the measured voltage within the specified value? | 9-14 | Go to Step 12 | Go to Step 13 |
9 | Test for a loose connection or an open on the ignition positive voltage circuit to the temperature control actuator motor. 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 17 | Go to Step 3 |
10 | Test for a loose connection or an open on the temperature control actuator motor signal circuit. 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 17 | Go to Step 15 |
11 | Test for a loose connection or an open on the ignition positive voltage circuit to the heater-A/C 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 17 | Go to Step 15 |
12 | Replace the temperature control actuator motor. Refer to Temperature Actuator Replacement . Is the repair complete? | -- | Go to Step 17 | -- |
13 | Test for a loose connection or an open in the temperature control actuator motor ground circuit. 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 17 | Go to Step 3 |
14 |
Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 16 |
15 | Replace the heater-A/C control module. Refer to Control Assembly Replacement . Is the repair complete? | -- | Go to Step 17 | -- |
16 |
Did you find and correct the condition? | -- | Go to Step 17 | Go to Symptoms |
17 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Symptoms |
