GMC chervolet camaro 1999 Service Manual page 112

HVAC HVAC System - Manual 1-21
Blower Motor Inoperative at Any Speed (cont'd)
Step Action Value(s) Yes No
Inspect CKT 66 for an open or a poor connection at HVAC
13
control selector switch C2 terminal B and terminal C.
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Does CKT 66 have an open or poor connection?
Go to Step 16 Go to Step 14
Replace the HVAC control selector switch. Refer to
14
Control Assembly Replacement
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Is the repair complete? Go to Step 17
Repair the open in CKT 241 between HVAC control
15
selector switch and S248.
-
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Is the repair complete?
Go to Step 17
16
Repair a poor connection or open in circuit 66,
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-
Is the repair complete? Go to Step 17
1. Tum the ignition switch to the OFF position.
Goto HVAC
17
2. Reconnect all connectors/components removed.
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Blower Controls
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Have all the repairs been made? System Check
Blower Motor Low Speed Inoperative
Step
Action
Value(s)
Yes No
Was the entire HVAC Blower Controls System Check Go to HVAC
1 performed?
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Blower Controls
Go to Step 2 System Check
1. Turn the igl')ition switch to .the OFF positi9n.
2. Disconnect the blower resistor.
3. Connect a test light at the blower resistor connector
2
terminal B and ground.'
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4. Turn the ignition switch to the RUN positron.
5. Turn the blower switch. to LO.
6. Turn the selector switch to the VENT position.
Does the test light illuminate? Go to Step 3 Go to Step 4
Replace the blower resistor. Refer to Blower Motor
3
Resistor Replacement
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-
Is the repair complete? Go to Step 7
Connect a test light at the HV AC control selector switch
4
connector C1 terminal A and ground.
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Does the test light illuminate?
Go to.Steps
Go to Step6
5
Repair a poor connection or open in circuit 60.
-
-
Is the repair complete? Go to Step 7
Replace the HVAC control selector switch. Refer to
6
Control Assembly Replacement
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-
Is the repair complete?
Go to Step 7
1. Tum the ignition switch to the OFF position.
Goto HVAC
7
2. Reconnect all connectors/components removed.
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Blower.Controls
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Have all the repairs been made? System Check