For 1990-2009 cars

## Blower Motor High Speed Inoperative Front

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the entire HVAC diagnostic system check performed? | -- | Go to Step 2 | Go to Diagnostic System Check
2 |

1. Disconnect the blower motor resistor.
2. Connect a test lamp between the blower motor resistor connector terminal G and ground. Refer to Circuit Testing in Wiring Systems.

Is the test lamp on?

--

Go to Step 3

Go to Step 4

3 |

1. Turn the ignition switch to the RUN position.
2. Turn the heater-A/C control to the high position.
3. Connect a test lamp between the blower motor resistor terminal F and ground. Refer to Circuit Testing in Wiring Systems.

Is the test lamp on?

--

Go to Step 5

Go to Step 6

4 | Check for a short to ground in circuit 40. Refer to Circuit Testing in Wiring Systems. Is a short to ground present? | -- | Go to Step 9 | Go to Step 10
5 | Replace the blower motor resistor. Refer to Blower Motor Resistor Replacement . Is the repair complete? | -- | Go to Step 11 | --
6 | Connect the test lamp between the heater-A/C control connector C1 terminal C and ground. Refer to Circuit Testing in Wiring Systems. Is the test lamp on? | -- | Go to Step 7 | Go to Step 8
7 | Repair the poor connection or open in circuit 52. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 11 | --
8 | Replace the heater-A/C control. Refer to HVAC Module Assembly Replacement . Is the repair complete? | -- | Go to Step 11 | --
9 | Repair the short to ground in circuit 40. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 11 | --
10 | Repair the poor connection or open in circuit 40. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 11 | --
11 |

1. Turn the ignition switch to the OFF position.
2. Reconnect all connectors/components removed.

Have all the repairs been made?

--

Go to Diagnostic System Check

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