Symptom:
P-1899 PARK/NEUTRAL SWITCH STUCK IN PARK OR IN GEAR
When Monitored and Set Condition:
P-1899 PARK/NEUTRAL SWITCH STUCK IN PARK OR IN GEAR
When Monitored: With the transmission in Park, Neutral, or Drive and not in limp-in
mode.
Set Condition: This code is set if the PCM detects an incorrect Park/Neutral switch state
for a given mode of vehicle operation in two consecutive failures.
POSSIBLE CAUSES
P/N SWITCH SENSE CIRCUIT OPEN
PARK/NEUTRAL SWITCH SENSE CIRCUIT OPEN
PARK/NEUTRAL SWITCH SENSE CIRCUIT SHORT TO GROUND
PARK/NEUTRAL SWITCH SENSE CIRCUIT SHORT TO GROUND
PARK/NEUTRAL SWITCH WIRING HARNESS OBSERVABLE DEFECT
PARK/NEUTRAL SWITCH WIRING HARNESS OBSERVABLE DEFECT
PARK/NEUTRAL SWITCH DEFECTIVE
TRS DEFECTIVE
PCM DEF (P/N SWITCH)
PCM DEF (P/N SWITCH)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running.
With the DRB, read Park/Neutral Switch input state.
While moving gear selector in and out of Park and Reverse, watch DRB Display.
Did the display show9P/N and D/R9?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 2
No®Go To 3
2 Ignition Off.
Inspect the Wiring and Connector relating to Park/Neutral Position Switch.
Were any problems found?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Test Complete.
307
TRANSMISSION
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Symptom List:
TRANSPONDER (CYCLIC REDUNDANCY CHECK) CRC FAILURE
TRANSPONDER COMMUNICATION FAILURE
TRANSPONDER ID MISMATCH
TRANSPONDER RESPONSE MISMATCH
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be TRANSPONDER (CYCLIC RE-
DUNDANCY CHECK) CRC FAILURE.
When Monitored and Set Condition:
TRANSPONDER (CYCLIC REDUNDANCY CHECK) CRS FAILURE
When Monitored: At ignition ON and during Key Programming Mode.
Set Condition: This condition exists when 5 consecutive transponder signal transmis-
sions are sent to the SKIM with the correct message format but with invalid data.
TRANSPONDER COMMINICATION FAILURE
When Monitored: At ignition ON and during Key Programming Mode.
Set Condition: This condition exists when an invalid message format is received from the
transponder after 5 consecutive transponder read attempts.
TRANSPONDER ID MISMATCH
When Monitored: At ignition ON and during Key Programming Mode.
Set Condition: This condition exists when the transponder ID read by the SKIM does not
match any of those transponder ID's stored in the SKIM's memory.
TRANSPONDER RESPONSE MISMATCH
When Monitored: At ignition ON and during Key Programming Mode.
Set Condition: This condition exists when the transponder's secret algorithm result fails
to match the SKIM's result.
POSSIBLE CAUSES
INTERMITTENT WIRING HARNESS PROBLEM
SKIM/KEY DEFECTIVE
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