GMC chevrolet camaro 2000 Service Manual page 216

HVAC HVAC Systems - Manual 1-119
HVAC Compressor Clutch Does Not Disengage (cont'd)
Step
Action
Value(s) Yes No
1. Leave the Powertrain Control Module (PCM)
connector C2 still disconnected.
2.
NC
clutch relay still removed from the engine wiring
harness junction block 2.
3. Disconnect the
NC
compressor clutch coil connector.
8
4. Connect a DMM between the NC compressor clutch
-
coil connector terminal B and ground.
5. Turn the ignition switch to the RUN position.
6. Measure for voltage on the supply voltage circuit of
the NC compressor clutch.
Is voltage present on the supply voltage circuit of the
NC
compressor clutch?
Go to Step 9 Go to Step 10
Repair a short to battery voltage in the supply voltage
circuit of the
NC
compressor clutch between the engine
9
wiring harness junction block 2 and the
NC
compressor
clutch coil. Refer
fo
Wiring Repairs in Wiring Systems.
- -
Did you complete the repair?
Go to Step 11
Replace the
NC
compressor clutch coil. Refer to
Compressor Clutch Coil Removal (V5 - Conventional
Mount) and Compressor Clutch Coil Install
10
(V5 - Conventional Mount) (V6) or Compressor Clutch Coil
-
-
Removal (V7 - Direct Mount) and Compressor Clutch Coil
Install (V7 - Direct Mount) (V8).
Did you complete the replacement? Go to Step 11
11
Operate the system in order to verify the repair.
-
Did you correct the condition? System OK
Go to Step 3
Blower Motor Inoperative at Any Speed
Step
Action
Value(s) Yes No
Did you complete the Diagnostic System Check? Go to A
1
-
Diagnostic
Goto Step 2 System Check
1. Place the ignition switch in the RUN position.
2. Place the selector switch in the VENT position.
2
3. With a test lamp, probe the HVAC control (blower
-
switch) between connector C1 terminal E and ground.
Does the test lamp illuminate? Go to Step3 Go to Step 15
1. Place the blower switch in position 1 (low).
3
2. With a test lamp, probe the HVAC control (blower
switch) between connector C1 terminal A and ground.
-
Does the. test lamp illuminate?
Go to Step 4
Go to Step 5
1. Place the ignition switch in the OFF position.
2. Disconnect the blower motor relay.
3. Connect a fused jumper between the blower motor
4
relay terminals 82 and C1.
4. Place the ignition switch in the RUN position.
-
5. Place the selector switch in the VENT position.
6. Place the blower switch in position 1 (low).
Does the blower motor run? Go to Step 8 Go to Step 7
Test for and repair a poor connection at the HVAC control
5
blower switch. Refer to Testing for Intermittent and Poor
-
Connections and Connector Repairs in Wiring Systems.
Did you find and repair a poor connection? Go to Step 20 Go to Step 6
Replace the HVAC control blower switch. Refer to HVAC
6
Control Blower Switch Replacement.
- -
Did you complete the replacement? Go to Step20
)