Chrysler Concorde 2004 Service Manual page 1331

Symptom:
*CHECKING PARK/NEUTRAL SWITCH OPERATION
P/N POSITION SWITCH SENSE CIRCUIT OPEN
P/N POSITION SWITCH SENSE CIRCUIT SHORT TO GROUND
TRANSMISSION RANGE SENSOR
POWERTRAIN CONTROL MODULE
TEST
1 Ignition on, engine not running.
With the DRBIII , monitor the Park/Neutral Position Switch input state.
Move the gear selector through all gear positions, Park to 1 and back to Park.
Did the DRBIII display show P/N and D/R in the correct gear positions?
Yes → Test Complete.
No
2 Turn the ignition off to the lock position.
Disconnect the PCM harness connectors.
Disconnect the TRS harness connector.
Note: Check connectors - Clean/repair as necessary.
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 P/N Position Switch Sense circuit from the appropriate
terminal of special tool #8815 to the Transmission Range Sensor harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 3
No
3 Turn the ignition off to the lock position.
Disconnect the PCM harness connectors.
Disconnect the TRS harness connector.
Note: Check connectors - Clean/repair as necessary.
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 between ground and the P/N Position Switch Sense circuit.
Is the resistance above 100 kohms?
Yes → Go To 4
No
POSSIBLE CAUSES
ACTION
→ Go To 2
→ Repair the P/N Position Switch Sense circuit for an open.
→ Repair the P/N Position Switch Sense circuit for a short to ground.
TRANSMISSION - NGC
171
APPLICABILITY
All
All
All