Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: The front blower motor remains on at all times. | ||||
1 | Did you review the HVAC blower operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 |
Does the blower motor operate? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the test lamp illuminate? | -- | Go to Step 4 | Go to Step 5 |
4 |
Does the test lamp illuminate? | -- | Go to Step 17 | Go to Step 11 |
5 | Connect a J 35616-200 unpowered test lamp between blower motor resistor/relay connector cavity F for CKT 72 (LT BLU) and ground. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 7 |
6 |
Does the test lamp illuminate? | -- | Go to Step 17 | Go to Step 13 |
7 | Connect a J 35616-200 unpowered test lamp between blower motor resistor/relay connector cavity D for CKT 63 (TAN) and ground. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 9 |
8 |
Does the test lamp illuminate? | -- | Go to Step 17 | Go to Step 14 |
9 | Connect a J 35616-200 unpowered test lamp between blower motor resistor/relay connector cavity E for CKT 60 (YEL) and ground. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 10 | Go to Step 18 |
10 |
Does the test lamp illuminate? | -- | Go to Step 17 | Go to Step 15 |
11 |
Does the test lamp illuminate? | -- | Go to Step 16 | Go to Step 12 |
12 | Repair the short to voltage in CKT 52 (ORN) between the heater and A/C controller, and the blower motor resistor/relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 19 | -- |
13 | Repair the short to voltage in CKT 72 (LT BLU) between the heater and A/C controller, and the blower motor resistor/relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 19 | -- |
14 | Repair the short to voltage in CKT 63 (TAN) between the heater and A/C controller and the blower motor resistor/relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 19 | -- |
15 | Repair the short to voltage in CKT 60 (YEL) between the heater and A/C controller and the blower motor resistor/relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 19 | -- |
16 | Repair the short to voltage in CKT 119 (WHT) between heater and A/C controller connector C1 and connector C2. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 19 | -- |
17 | Replace the heater and A/C controller. Refer to Control Assembly Replacement . Did you complete the repair? | -- | Go to Step 19 | -- |
18 | Replace the blower motor resistor/relay. Refer to Blower Motor Resistor Replacement . Did you complete the repair? | -- | Go to Step 19 | -- |
19 | Operate the blower motor in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
