Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Heater Blower Controls System Check ? | -- | Go to Step 2 | |
2 |
Does the blower motor operate in the LO position? | -- | Go to Step 3 | Go to Step 4 |
3 | Turn the fan switch slowly from the LO position to the M1 position. Does the blower motor operate in the M1 position? | -- | Go to Step 5 | Go to Step 6 |
4 |
Did the test lamp light? | -- | Go to Step 8 | Go to Step 7 |
5 | Turn the fan switch slowly from the M1 position to the M2 position. Does the blower motor operate in the M2 position? | -- | Go to Step 9 | |
6 |
Did the test lamp light? | -- | Go to Step 8 | Go to Step 10 |
7 | Use a test lampJ 35616-200 in order to backprobe from the HVAC control module connector C2 CKT 60 (YEL) cavity A to ground. Did the test lamp light? | -- | Go to Step 12 | Go to Step 11 |
8 | Replace the blower motor resistor and relay pack. Refer to Blower Motor Resistor Replacement . Is the repair complete? | -- | -- | |
9 |
Did the test lamp light? | -- | Go to Step 8 | Go to Step 14 |
10 | Use a test lampJ 35616-200 in order to backprobe from the HVAC control module connector C2 CKT 63 (TAN) cavity B to ground. Did the test lamp light? | -- | Go to Step 13 | Go to Step 11 |
11 | Replace the HVAC control module. Refer to Heater Module Replacement - Auxiliary. Is the repair complete? | -- | -- | |
12 | Repair the open in CKT 60 (YEL) between the HVAC control module and the blower motor resistor and relay pack. Is the repair complete? | -- | -- | |
13 | Repair the open in CKT 63 (TAN) between the HVAC control module and the blower motor resistor and relay pack. Is the repair complete? | -- | -- | |
14 | Use a test lampJ 35616-200 in order to backprobe from the HVAC control module connector C2 CKT 72 (LT BLU) cavity C to ground. Did the test lamp light? | -- | Go to Step 15 | Go to Step 11 |
15 | Repair the open in CKT 72 (LT BLU) between the HVAC control module and the blower motor resistor and relay pack. Is the repair complete? | -- | -- |
