For 1990-2009 cars

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

1. Place the ignition switch in the RUN position.
2. Place the rear window wiper/washer and multi-function switch to position 3.
3. With a test light, backprobe the auxiliary blower motor between terminals B and A.

Is the test light on?

--

Go to Step 3

Go to Step 4

3 | Replace the auxiliary blower motor. Refer to Auxiliary Blower Motor and Fan Replacement . Is the repair complete? | -- | Go to Step 11 | --
4 | With a test light, backprobe the auxiliary blower motor between terminal B and ground. Is the test light on? | -- | Go to Step 5 | Go to Step 6
5 | Connect a test light between the rear window wiper/washer and multi-function switch connector C2 terminal B and B+. Is the test light on? | -- | Go to Step 7 | Go to Step 8
6 | Repair the poor connection or open in CKT 641. Is the repair complete? | -- | Go to Step 11 | --
7 | Repair the poor connection or open in CKT 1052 between the auxiliary blower motor terminal A and S343. Is the repair complete? | -- | Go to Step 11 | --
8 | Connect the test light between the rear window wiper/washer and multi-function switch connector C2 terminal E and B+. Is test light on? | -- | Go to Step 9 | Go to Step 10
9 | 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 11 | --
10 | Repair the poor connection or open in CKT 1450 between the rear window wiper/washer and multi-function switch connector C2 terminal E and S230. 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 HVAC System Check

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