Diagnostic Tests: Notes
WARNING:
To avoid injury from accidental air bag deployment, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG SYSTEM SAFETY article in GENERAL SERVICING.
CAUTION:
Always turn ignition off before disconnecting any control module connectors. Failure to do so could result in damage to control module. When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle.
NOTE:
The following procedures were written specifically for Chrysler Diagnostic Readout Box (DRBIII®) scan tool. A generic scan tool can be used, but may not be capable of performing all necessary test functions.
NOTE:
Ensure A/C refrigerant system is properly charged prior to performing diagnostic tests. See A/C SYSTEM PERFORMANCE under SYSTEM TESTS.
DTC/FAULT MESSAGE DIAGNOSTIC TESTS
| DTC/Fault Message Description | Go To Test |
|---|---|
| DTC P0645 - A/C Clutch Relay Circuit | A |
| DTC P1598 - A/C Pressure Sensor Volts Too High | B |
| DTC P1599 - A/C Pressure Sensor Volts Too Low | C |
| ATC Blower Motor Inoperative | D |
| ATC Blower Motor Speeds Incorrect | E |
| ATC Control Panel Illumination | F |
| ATC Switch Failure Or Inoperative | G |
| ATC System Check | H |
| ATC Temperature Control Incorrect In Sun Or Shade | I |
| Blend Door Feedback Failure | J |
| Blend Door Stall Test Failure | J |
| Blend Door Output Shorted To Ground | K |
| Door Actuator Output Shorted To Battery Voltage | L |
| Blend Door Output Shorted To Battery Voltage | L |
| Common Output Shorted To Battery Voltage | L |
| Mode Door Shorted To Battery Voltage | L |
| Recirculation Door Shorted To Battery Voltage | L |
| Common Door Output Shorted To Ground | M |
| Evaporator Temperature Sensor Failure | N |
| In-Car Temp Sensor/Aspirator Failure | P |
| Mode Door Feedback Failure | Q |
| Mode Door Stall Test Failure | Q |
| Mode Door Output Shorted To Ground | R |
| Recirculation Door Output Shorted To Ground | S |
| Recirculation Door Test Failure | T |
| Sun Load Sensor Failure | U |