Dodge ZB 2005 Service Manual page 1311

DRIVEABILITY - GAS
Symptom:
*CHECKING A/C SYSTEM OPERATION WITH NO DTCS
DTC AND COMMUNICATION PRESENT
A/C SELECT CIRCUIT OPEN
A/C SELECT IN HVAC
PCM
A/C REQUEST CIRCUIT OPEN
REFRIGERATION SYSTEM NOT PROPERLY CHARGED
HIGH PRESS CUT-OFF SWITCH
LOW PRESSURE SWITCH
A/C CLUTCH COIL
A/C COMPRESSOR CLUTCH GROUND CIRCUIT OPEN
(C3) A/C CLUTCH RELAY OUTPUT CIRCUIT OPEN
FUSED B+ CIRCUIT OPEN
A/C CLUTCH RELAY
TEST
1 Ignition on, engine not running.
Verify that communication with the HVAC and PCM is available over the BUS.
With the DRBIII , check for DTCs in the PCM and HVAC module.
Are any A/C DTC's or communication failures present?
Yes → Diagnose the related DTC(s) or BUS failure before continuing.
→ Go To 2
No
2 Engine running.
With the DRBIII , read the A/C Select status in the PCM.
Turn the A/C Switch on and off a few times.
Does the A/C Select state change?
Yes → Go To 3
→ Go To 12
No
3 Engine Running.
Turn the A/C system on and the fan on high.
With the DRBIII in Inputs/Outputs, read the A/C request state.
Does the A/C request state change?
Yes → Go To 4
→ Repair the open in the A/C Request circuit.
No
POSSIBLE CAUSES
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
190
APPLICABILITY
All
All
All