Chrysler Crossfire. Manual — part 986
RIGHT COOLANT CIRCULATION VALVE CIRCUIT (CONTINUED)
When Monitored and Set Condition
•
When Monitored: With the ignition on.
•
Set Condition: The A/C Heater Control Module detects an abnormal condition on the Right Coolant Circulation
Valve Control circuit.
POSSIBLE CAUSES
FUSED B(+) CIRCUIT OPEN
RIGHT COOLANT CIRCULATION VALVE CONTROL CIRCUIT OPEN
RIGHT COOLANT CIRCULATION VALVE
A/C HEATER CONTROL MODULE
For a complete HVAC Circuit Diagram, (Refer to 24 - HEATING & AIR CONDITIONING - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
MEASURE COOLANT CIRCULATION VALVE VOLTAGE
Note: Inspect Fuse 15 located in the Underhood Accessory Fuse
Block. If the fuse is open, repair the cause of the open fuse
before continuing.
Turn the ignition off.
Disconnect the Coolant Circulation Valve harness connector.
Note: Check connector - Clean/repair as necessary.
Measure the voltage of the Fused B(+) circuit at the Coolant Circula-
tion Valve harness connector.
Is the voltage above 10 volts?
Yes
>> Go to 2
No
>> Repair the Coolant Circulation Valve Fused B(+) circuit.
Perform BODY VERIFICATION TEST.
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HEATING & AIR CONDITIONING - ELECTRICAL DIAGNOSTICS
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RIGHT COOLANT CIRCULATION VALVE CIRCUIT (CONTINUED)
2.
MEASURE THE VOLTAGE OF THE RIGHT COOLANT CIRCULATION VALVE CONTROL CIRCUIT
With the ignition off.
Disconnect the A/C Heater Control Module harness connector.
Note: Check connector - Clean/repair as necessary.
Connect a jumper wire between the Right Coolant Circulation Valve
terminals in the Coolant Circulation Valve harness connector.
Measure the voltage of the Right Coolant Circulation Valve Control cir-
cuit at the A/C Heater Control Module harness connector.
Is the voltage above 10 volts?
Yes
>> Go to 3
No
>> Repair the Right Coolant Circulation Valve Control circuit
for an open.
Perform BODY VERIFICATION TEST.
3.
MEASURE THE VOLTAGE OF THE RIGHT COOLANT CIRCULATION VALVE CONTROL CIRCUIT
With the ignition off.
Reconnect the Coolant Circulation Valve harness connector.
Measure the voltage of the Right Coolant Circulation Valve Control cir-
cuit at the A/C Heater Control Module harness connector.
Is the voltage above 10 volts?
Yes
>> Replace the A/C Heater Control Module. (Refer to 24 -
HEATING & AIR CONDITIONING/CONTROLS/HEATER
CONTROL - REMOVAL)
Perform BODY VERIFICATION TEST.
No
>> Replace the Coolant Circulation Valve. (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING/A/C EXPAN-
SION VALVE - REMOVAL).
Perform BODY VERIFICATION TEST.
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HEATING & AIR CONDITIONING - ELECTRICAL DIAGNOSTICS
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A/C COMPRESSOR CLUTCH CIRCUIT
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HEATING & AIR CONDITIONING - ELECTRICAL DIAGNOSTICS
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A/C COMPRESSOR CLUTCH CIRCUIT (CONTINUED)
When Monitored and Set Condition
•
When Monitored: Engine Running with the A/C on.
•
Set Condition: The A/C Heater Control Module detects an A/C Compressor malfunction.
POSSIBLE CAUSES
A/C COMPRESSOR CLUTCH SIGNAL CIRCUIT OPEN
A/C COMPRESSOR CLUTCH
A/C HEATER CONTROL MODULE
For a complete HVAC Circuit Diagram (Refer to 24 - HEATING & AIR CONDITIONING - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
TEST THE A/C COMPRESSOR CLUTCH
Turn the ignition off.
Disconnect the inline connector C106 in the underhood relay control
module compartment.
Note: Check connector - Clean/repair as necessary.
Using a jumper wire to battery power, energize the A/C Compressor
clutch.
Does the A/C Compressor clutch energize?
Yes
>> Go to 2
No
>> Go to 3
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HEATING & AIR CONDITIONING - ELECTRICAL DIAGNOSTICS
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