Mode Actuator Inoperative Front
Step | Action | Value(s) | Yes | No | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Did you review the description and operation and perform the necessary inspections? | -- | Go to Symptoms | |||||||||
2 | Verify that the fault is present. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections | |||||||||
3 |
Does the test lamp illuminate? | -- | ||||||||||
4 | Connect a test lamp between the ground circuit and the ignition positive voltage circuit of the mode door motor. Does the test lamp illuminate? | -- | ||||||||||
5 |
Does the voltage measure near the specified values when in each position? | 0 V: Defrost 4.9 V Floor | ||||||||||
6 | Measure the voltage from the door position signal circuit at the HVAC control module to a good ground. Does the voltage measure within the specified range? | 0.09-4.95 V | ||||||||||
7 |
Does the drive shaft of the mode door motor rotate? | -- | ||||||||||
8 |
Does the voltage measure near the specified value? | 5 V | ||||||||||
9 | Measure the voltage from the door position signal circuit of the mode door motor to a good ground. Does the voltage measure near the specified value? | 0 V | ||||||||||
10 |
Does the voltage measure near the specified value? | 5 V | ||||||||||
11 | Test the 5-volt reference circuit of the mode door motor for a short to ground, a short to voltage, or an open. Did you find and correct the condition? | -- | ||||||||||
12 | Test the door position signal circuit of the mode door motor for a short to voltage. Did you find and correct the condition? | -- | ||||||||||
13 | Test the door position signal circuit of the mode door motor for an open, a high resistance, or a short to ground. Did you find and correct the condition? | -- | ||||||||||
14 | Test the control circuit of the mode door motor for an open, a short to ground. or a short to voltage. Did you find and correct the condition? | -- | ||||||||||
15 | Inspect the mode door for the following conditions:
Did you find and correct the condition | -- | ||||||||||
16 | Inspect for poor connections at the harness of the mode door motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||||||||||
17 | Inspect for poor connections at the harness 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? | -- | ||||||||||
18 | Repair the ignition positive voltage circuit of the mode door motor. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |||||||||
19 | Repair the ground circuit of the mode door motor. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |||||||||
20 | Replace the mode door motor. Refer to Temperature Actuator Replacement . Did you complete the replacement? | -- | -- | |||||||||
21 | Replace the HVAC control module. Refer to Control Assembly Replacement and Control Assembly Replacement - Auxiliary . Did you complete the replacement? | -- | -- | |||||||||
22 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK |
Mode Actuator Inoperative Auxiliary
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: HVAC Blower Control Schematics | ||||
1 | Did you review the description and operation and perform the necessary inspections? | -- | Go to Symptoms | |
2 | Verify the fault is present. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections | |
3 |
Does the test lamp illuminate? | -- | ||
4 |
Does the voltage reading vary within the specified value | 0-12 V | ||
5 |
Does the voltage reading vary within the specified value? | 0-12 V | ||
6 | Connect a (DMM) from the rear mode door motor connector cavity 10. Does the voltage measure near the specified value? | B+ | ||
7 | Test the Mode motor ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs Did you find and correct the condition? | -- | ||
8 | Repair the ignition positive voltage of the Auxiliary HVAC logic module. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
9 | Test the mode signal circuit(s) from the inoperative HVAC control module for an open, a high resistance, or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
10 | Test the mode signal circuit(s) from the Auxiliary HVAC Logic module for an open, a high resistance, or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
11 | Repair the ignition positive voltage circuit of the Mode door motor. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
12 | Replace the Mode door motor. Refer to Mode Door Actuator Replacement - Auxiliary . Did you complete the repair? | -- | -- | |
13 | Replace the inoperative HVAC control module assembly. Refer to Control Assembly Replacement - Auxiliary . Did you complete the repair? | -- | -- | |
14 | Replace the Auxiliary HVAC Logic module. Did you complete the repair? | -- | -- | |
15 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | |
