Chrysler PT Cruiser 2001 Service Manual Supplement page 2697

Symptom:
P1899-P/N SWITCH STUCK IN PARK OR IN GEAR
When Monitored and Set Condition:
P1899-P/N SWITCH STUCK IN PARK OR IN GEAR
When Monitored: Continuously with the transmission in Park, Neutral, or Drive and
NOT in Limp-in mode.
Set Condition: This code will set if the PCM detects an incorrect Park/Neutral switch
state for a given mode of vehicle operation.
INTERMITTENT PARK/NEUTRAL SWITCH
TRANSMISSION RANGE SENSOR
P/N POSITION SWITCH SENSE CIRCUIT OPEN
P/N POSITION SWITCH SENSE CIRCUIT SHORTED TO GROUND
POWERTRAIN CONTROL MODULE (P/N POSITION SWITCH)
TEST
1 With the DRB, read PCM DTCs.
Is the Good Trip Counter for P-1899 displayed and equal to 0?
Yes → Go To 2
→ Go To 7
No
2 Turn the ignition on.
With the DRB, read the Park/Neutral Position Switch input state.
While moving the gear selector through all gear positions (Park to 1 and back to
Park), watch the DRB display.
Did the DRB display show P/N and D/R in the correct gear positions?
Yes → Test Complete.
→ Go To 3
No
3 Turn the ignition off.
Disconnect the PCM harness connectors.
Disconnect the Transmission Range Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the P/N Position Switch Sense circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 4
→ Repair the P/N Position Switch Sense circuit for an open.
No
POSSIBLE CAUSES
ACTION
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
237
TRANSMISSION
APPLICABILITY
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