Blower Motor Inoperative in One Speed Only for Buick GL7 (Export) 2000
Blower Motor Inoperative in One Speed Only Front, High Speed Operates Normally
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the Blower Controls Circuit Description and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Verify that the front blower motor operates in one speed only (high speed operates normally). Does the front blower motor operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Is the test lamp on? | -- | Go to Step 4 | Go to Step 5 |
4 | Replace the blower motor resistor. Refer to Blower Motor Resistor Replacement . Is the repair complete? | -- | Go to Step 8 | -- |
5 | Probe with a test lamp between the heater-A/C control connector C1 of the inoperative terminal (1=H, 2=G, 3=F, 4=E) and ground. Refer to Circuit Testing in Wiring Systems. Is the test light on? | -- | Go to Step 6 | Go to Step 7 |
6 | Repair the poor connection or an open in the inoperative circuit (1=60, 2=63, 3=72, 4=73). Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 8 | -- |
7 | Replace the heater-A/C control. Refer to HVAC Module Assembly Replacement . Is the repair complete? | -- | Go to Step 8 | -- |
8 |
Did you correct the condition? | -- | System OK | Go to Step 3 |
Blower Motor Inoperative in One Speed Only Rear, High Speed Operates Normally
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the Blower Controls Circuit Description and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Verify that the rear blower motor operates in one speed only (high speed operates normally). Does the rear blower motor operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Is one speed inoperative from the auxiliary heater-A/C control (auxiliary blower switch) only? | -- | Go to Step 4 | Go to Step 5 |
4 |
Is the test lamp on? | -- | Go to Step 6 | Go to Step 7 |
5 | Is one speed inoperative from the rear window wiper/washer and multifunction switch (auxiliary blower switch) only? | -- | Go to Step 8 | Go to Step 9 |
6 | Repair the poor connection or open in the inoperative circuit (1=1176, 2=1072, 3=1052). Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 12 | -- |
7 | Replace the auxiliary heater-A/C control. Refer to Auxiliary HVAC Module Replacement . Is the repair complete? | -- | Go to Step 12 | -- |
8 | Probe with a test lamp between the rear window wiper/washer and multi-function switch connector C2 of the inoperative terminal (1=A, 2=C, 3=B) and B+. Refer to Circuit Testing in Wiring Systems. Is the test lamp on? | -- | Go to Step 6 | Go to Step 10 |
9 |
Is the test lamp on? | -- | Go to Step 11 | Go to Step 6 |
10 | Replace the rear window wiper/washer and multi-function switch. Refer to Auxiliary Air Conditioning (A/C) Control Assembly Replacement - Front . Is the repair complete? | -- | Go to Step 12 | -- |
11 | Replace the auxiliary blower motor resistor. Refer to Auxiliary Blower Motor Resistor Replacement . Is the repair complete? | -- | Go to Step 12 | -- |
12 |
Did you correct the condition? | -- | System OK | Go to Step 3 |
