Chrysler Concorde 2004 Service Manual page 882

DRIVEABILITY - NGC
P0533-A/C PRESSURE SENSOR HIGH —
TEST
3 Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Turn the ignition on.
Measure the voltage on the (C18) A/C Pressure Sensor Signal circuit at the A/C
Pressure Sensor harness connector.
Is the voltage above 5.2 volts?
Yes → Repair the (C18) A/C Pressure Signal circuit for a short to battery
No
4 Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Connect a jumper wire between the (C18) A/C Pressure Signal circuit and the (K4)
Sensor ground circuit.
With the DRBIII , monitor the A/C Pressure Sensor voltage.
Turn the ignition on.
Is the voltage below 1.0 volt?
Yes → Replace the A/C Pressure Sensor.
No
5 Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (C18) A/C Pressure Sensor Signal circuit from the A/C
Pressure Sensor harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 6
No
6 Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K4) Sensor ground circuit from the A/C Pressure
Sensor harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 7
No
ACTION
voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
→ Go To 4
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
→ Go To 5
→ Repair the (C18) A/C Pressure Signal circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
→ Repair the (K4) Sensor ground circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
Continued
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APPLICABILITY
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