For 1990-2009 cars

## Blower Motor Inoperative at Any Speed 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. Place the ignition switch in the RUN position.
2. With a test lamp, probe the heater-A/C control between connector C1 terminal B and ground. Refer to Circuit Testing in Wiring Systems.

Is the test lamp on?

--

Go to Step 3

Go to Step 4

3 |

1. Place the heater-A/C control in position 1.
2. With a test lamp, probe the heater-A/C control between connector C1 terminal H and ground. Refer to Circuit Testing in Wiring Systems.

Is the test lamp on?

--

Go to Step 5

Go to Step 6

4 | Repair the poor connection or open in circuit 41 between heater-A/C control and the fuse block. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 11 | --
5 | Connect a test lamp between the blower motor connector terminals A and B. Refer to Circuit Testing in Wiring Systems. Is the test lamp on? | -- | Go to Step 7 | Go to Step 8
6 | Replace the heater-A/C control. Refer to HVAC Module Assembly Replacement . Is the repair complete? | -- | Go to Step 11 | --
7 | Replace the blower motor. Refer to Blower Motor and Fan Replacement . Is the repair complete? | -- | Go to Step 11 | --
8 | Connect the test lamp between the blower motor resistor connector terminal E and B+. Is test lamp on? | -- | Go to Step 9 | Go to Step 10
9 | Replace the blower motor resistor. Refer to Blower Motor Resistor Replacement . Is the repair complete? | -- | Go to Step 11 | --
10 | Repair the poor connection or open in circuit 150. 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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## Blower Motor Inoperative at Any Speed Rear

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 | Is the auxilliary blower inoperative from both switches? | -- | Go to Step 3 | Go to Step 4
3 |

1. Place the ignition switch in the RUN position.
2. Place the rear window wiper/washer and multi-function switch (auxilliary blower switch) to position 3.
3. With a test lamp, probe the auxiliary blower motor between terminals B and A. Refer to Circuit Testing in Wiring Systems.

Is the test lamp on?

--

Go to Step 5

Go to Step 6

4 | Is the auxilliary blower inoperative from the rear window wiper/washer and multi-function switch (auxilliary blower switch)? | -- | Go to Step 11 | Go to Step 13
5 | Replace the auxiliary blower motor. Refer to Auxiliary Blower Motor and Fan Replacement . Is the repair complete? | -- | Go to Step 21 | --
6 | With a test lamp, probe the auxiliary blower motor between terminal B and ground. Refer to Circuit Testing in Wiring Systems. Is the test lamp on? | -- | Go to Step 7 | Go to Step 8
7 | Connect a test lamp between the rear window wiper/washer and multi-function switch connector C2 terminal B and B+. Refer to Circuit Testing in Wiring Systems. Is the test lamp on? | -- | Go to Step 9 | Go to Step 10
8 | Repair the poor connection or open in circuit 641. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 21 | --
9 | Repair the poor connection or open in circuit 1052 between the auxiliary blower motor terminal A and S343. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 21 | --
10 | Connect the test lamp between the rear window wiper/washer and multi-function switch connector C2 terminal E and B+. Refer to Circuit Testing in Wiring Systems. Is test lamp on? | -- | Go to Step 11 | Go to Step 12
11 | 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 21 | --
12 | Repair the poor connection or open in circuit 1450. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 21 | --
13 |

1. The auxilliary blower is inoperative from the auxilliary heater-A/C control (auxilliary blower switch).
2. Place the ignition switch in the RUN position.
3. With a test lamp, probe the auxiliary heater-A/C control between connector C1 terminal 1 and ground. Refer to Circuit Testing in Wiring Systems.

Is the test lamp on?

--

Go to Step 14

Go to Step 15

14 | With a test lamp, probe the auxiliary heater-A/C control between connector C1 terminal 1 and connector C2 terminal C. Refer to Circuit Testing in Wiring Systems. Is the test lamp on? | -- | Go to Step 16 | Go to Step 17
15 | Repair the poor connection or open in circuit 641 between the auxiliary heater-A/C control connector C1 terminal 1 and S345. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 21 | --
16 |

1. Place the rear window wiper/washer and multi-function switch to the REAR position.
2. Connect a test lamp between the auxiliary heater-A/C control connector C1 terminal 3 and B+. Refer to Circuit Testing in Wiring Systems.

Is the test lamp on?

--

Go to Step 18

Go to Step 19

17 | Repair the poor connection or open in circuit 1750. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 21 | --
18 | Replace the auxiliary heater-A/C control. Refer to Auxiliary HVAC Module Replacement . Is the repair complete? | -- | Go to Step 21 | --
19 | Connect the test lamp between the rear window wiper/washer and multi-function switch connector C2 terminal G and B+. Refer to Circuit Testing in Wiring Systems. Is test lamp on? | -- | Go to Step 20 | Go to Step 11
20 | Repair the poor connection or open in circuit 778. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 21 | --
21 |

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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