GMC Chevrolet Camaro 1998 Service Manual page 128

1-18 HVAC System - Manual HVAC
Blower Motor Inoperative at
Any
Speed (cont'd)
Step
Action
Value(s) Yes
No
Replace the blower motor. Refer to Blower Motor and
9
Fan Replacement
-
-
Is the repair complete?
Go to Step 17
(
10
Repair the poor connection or open in CKT 65.
-
-
Is the repair complete?
Go to Step 17
11
Repair the poor connection or open in CKT 850.
-
-
Is the repair complete? Go to Step 17
Backprobe the HVAC control selector switch between
12
connector C2 terminal C and ground.
-
Is the test light on? Go to Step 13 Go to Step 15
Inspect CKT 66 for an open or a poor connection at
13
HVAC control selector switch C2 terminal B and
terminal E.
-
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
-
-
Is the repair complete?
Go to Step 17
Repair the open in CKT 241 between HVAC control
15
selector switch and 8248.
-
"-
Is the repair complete?
Go to Step 17
16
Repair a poor connection or open in circuit 66.
-
-
Is the repair complete?
Go to Step 17
1. Turn the ignition switch to the OFF position.
Go to HVAC
17
2. Reconnect all connectors/components removed.
-
Blower Controls
-
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?
-
Blower Controls
Go to Step2 System Check
1. Turn the ignition switch to the OFF position.
2. Disconnect the blower resistor.
3. Connect a test light at the blower resistor connector
2
terminal B and ground.
-
4. Turn the ignition switch to the RUN position.
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
- -
Is the repair complete? Go to Step 7
Connect a test light at the HVAC control selector switch
4
connector C1 terminal A and ground.
-
Does the test light illuminate? Go to Step 5 Go to Step 6
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
-
-
Is the repair complete? Go to Step 7
1. Turn the ignition switch to the OFF position.
Go to HVAC
7
2. Reconnect all connectors/components removed.
-
Blower Controls
-
(
Have all the repairs been made?
System Check