Blower Motor Inoperative at Any Speed. Pontiac Sun Runner - 4WD (Canada) 1998

For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the Heater Blower Controls System Check performed? | -- | Go to Step 2 | Go to Heater Blower Controls System Check
2 | Backprobe the blower speed selector switch connector with a test lamp from cavity 1 to chassis ground. Does the test lamp light? | -- | Go to Step 4 | Go to Step 3
3 | Repair the open in the LT GRN wire between fuse block 2 and the blower speed selector switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Heater Blower Controls System Check | --

4

1. Move the blower speed selector switch to HIGH.
2. Backprobe the blower speed selector switch with a test lamp from cavity 3 to chassis ground.

Does the test lamp light?

--

Go to Step 6

Go to Step 5

5 | Replace the blower speed selector switch. Refer to Blower Switch Replacement . Is the repair complete? | -- | Go to Heater Blower Controls System Check | --
6 | Backprobe the blower motor connector with a test lamp from cavity 2 to chassis ground. Does the test lamp light? | -- | Go to Step 8 | Go to Step 7
7 | Repair the open in the PNK wire between the blower motor and the blower speed selector switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Heater Blower Controls System Check | --

8

1. Turn the ignition switch to LOCK.
2. Backprobe the blower motor with a digital multimeter from cavity 1 to chassis ground.
3. Measure the resistance.

Is the resistance less than the specified value?

3.0 ohms

Go to Step 10

Go to Step 9

9 | Repair the open in the BLK wire between the blower motor and G201. Is the repair complete? | -- | Go to Heater Blower Controls System Check | --
10 | Replace the blower motor. Refer to Blower Motor and Fan Replacement . Is the repair complete? | -- | Go to Heater Blower Controls System Check | --