Dodge Caliber. Manual — part 1396
HEATING & AIR CONDITIONING
TABLE OF CONTENTS
page
page
HEATING & AIR CONDITIONING ELECTRICAL
DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
HVAC - SERVICE INFORMATION . . . . . . . . . . . . . 52
HEATING & AIR CONDITIONING ELECTRICAL
DIAGNOSTICS
TABLE OF CONTENTS
page
page
HEATING & AIR CONDITIONING ELECTRICAL
DIAGNOSTICS
DIAGNOSIS AND TESTING
B1001–A/C SWITCH REQUEST INPUT
CIRCUIT LOW (CCN) . . . . . . . . . . . . . . . . . . . . . . . . 3
B1002–A/C SWITCH REQUEST INPUT
CIRCUIT HIGH (CCN) . . . . . . . . . . . . . . . . . . . . . . . 6
B10C1–A/C SELECT SWITCH STUCK (CCN) . . 10
B1016–REAR DEFROST SWITCH REQUEST
INPUT CIRCUIT LOW (CCN) . . . . . . . . . . . . . . . . 12
B1031–EVAPORATOR FIN TEMPERATURE
SENSOR CIRCUIT LOW (CCN). . . . . . . . . . . . . . 14
CIRCUIT LOW (TIPM) . . . . . . . . . . . . . . . . . . . . . . 17
CIRCUIT HIGH (TIPM) . . . . . . . . . . . . . . . . . . . . . . 20
CIRCUIT OPEN (TIPM) . . . . . . . . . . . . . . . . . . . . . 23
CIRCUIT LOW (TIPM) . . . . . . . . . . . . . . . . . . . . . . 26
CIRCUIT HIGH (TIPM) . . . . . . . . . . . . . . . . . . . . . . 29
CIRCUIT OPEN (TIPM) . . . . . . . . . . . . . . . . . . . . . 32
CIRCUIT OPEN (TIPM) . . . . . . . . . . . . . . . . . . . . . 35
CIRCUIT LOW (TIPM) . . . . . . . . . . . . . . . . . . . . . . 37
CIRCUIT HIGH (TIPM) . . . . . . . . . . . . . . . . . . . . . . 40
CIRCUIT OVERCURRENT (TIPM) . . . . . . . . . . . 43
CIRCUIT HIGH (TIPM) . . . . . . . . . . . . . . . . . . . . . . 46
CIRCUIT LOW (TIPM) . . . . . . . . . . . . . . . . . . . . . . 48
CIRCUIT OVERCURRENT (TIPM) . . . . . . . . . . . 50
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HEATING & AIR CONDITIONING
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HEATING & AIR CONDITIONING ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
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HEATING & AIR CONDITIONING ELECTRICAL DIAGNOSTICS
PM
B1001–A/C SWITCH REQUEST INPUT CIRCUIT LOW (CCN)
For a complete wiring diagram Refer to Section 8W.
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HEATING & AIR CONDITIONING ELECTRICAL DIAGNOSTICS
24 - 3
•
When Monitored:
With the ignition on.
•
Set Condition:
If the Instrument Cluster (CCN) detects voltage below 0.55 volts for 10 seconds on the (C105) HVAC MUX
Control circuit.
Possible Causes
(C105) HVAC MUX CONTROL CIRCUIT SHORTED TO GROUND
(C105) HVAC MUX CONTROL CIRCUIT SHORTED TO (Z936) GROUND CIRCUIT
(C105) HVAC MUX CONTROL CIRCUIT SHORTED TO (C955) HVAC MUX RETURN CIRCUIT
INSTRUMENT CLUSTER (CCN)
A/C HEATER CONTROL
Diagnostic Test
1.
VERIFY DTC B1001–A/C SWITCH REQUEST INPUT CIRCUIT LOW IS ACTIVE
Turn the ignition on.
With the scan tool, erase DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display active: B1001–A/C SWITCH REQUEST INPUT CIRCUIT LOW?
Yes
>> Go To 2
No
>> The condition that caused this symptom is currently not present. Check for an intermittent condition by
inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also,
inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated termi-
nals. Repair as necessary.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES - STANDARD PROCEDURE).
2.
CHECK FOR B1001–A/C SWITCH REQUEST INPUT CIRCUIT LOW WITH A/C HEATER CONTROL C1
HARNESS CONNECTOR DISCONNECTED
Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Turn the ignition on.
With the scan tool, erase DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display: B1001–A/C SWITCH REQUEST
INPUT CIRCUIT LOW?
Yes
>> Go To 3
No
>> Replace the A/C Heater Control in accordance with the Ser-
vice Information.
Perform the BODY VERIFICATION TEST – VER 1. (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
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HEATING & AIR CONDITIONING ELECTRICAL DIAGNOSTICS
PM
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