2000 CHRYSLER VOYAGER automatic transmission

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
ProCarManuals.com

TEST ACTION APPLICABILITY
3 Ignition Off.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure between the Park/Neutral Switch Sense Circuit at the
PCM Connector and Ground.
While moving Gear Selector between Park and Reverse, watch Ohmmeter display.
Did the display switch from below 5.0 ohms to above 5.0 ohms?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Replace the PCM.
Perform Powertrain Verification Test VER-5A.
No®Go To 4
4 Ignition Off.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure between the Park/Neutral Switch Sense Circuit at the
PCM Connector and Ground.
While moving gear selector between Park and Reverse, watch Ohmmeter display.
Did the display stay below 5.0 ohms at all times?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Repair the P/N Switch Sense Circuit for a short to Ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 5
5 Ignition Off.
Disconnect the PCM.
Disconnect the Park/Neutral Position Switch Connector.
Note: Check connectors - Clean/repair as necessary.
With an Ohmmeter, measure the Park/Neutral Switch Sense Circuit from the PCM
to the Switch.
Is the resistance below 5.0 ohms?TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Ye s®Go To 6
No®Repair open P/N Switch Sense Circuit.
Perform Powertrain Verification Test VER-5A.
6 If there are no potential causes remaining, the P/N Position Switch is assumed to be
defective.
View repair options.TRANSMISSION -
AUTOMATIC
3-SPD, 31TH
Repair
Replace the Park/Neutral Position Switch.
Perform Powertrain Verification Test VER-5A.
7 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
4-SPD, 41TE
and/or TRANSMIS-
SION - AUTO-
STICK Ye s®Go To 8
No®Go To 9
308
TRANSMISSION
P-1899 PARK/NEUTRAL SWITCH STUCK IN PARK OR IN GEAR Ð
Continued
ProCarManuals.com

TEST ACTION APPLICABILITY
8 Ignition Off.
Inspect the Wiring and Connector relating to Park/Neutral Position Switch.
Were any problems found?TRANSMISSION -
AUTOMATIC
4-SPD, 41TE
and/or TRANSMIS-
SION - AUTO-
STICK
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Test Complete.
9 Ignition Off.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure between the Park/Neutral Switch Sense Circuit at the
PCM Connector and Ground.
While moving Gear Selector between Park and Reverse, watch Ohmmeter display.
Did the display switch from below 5.0 ohms to above 5.0 ohms?TRANSMISSION -
AUTOMATIC
4-SPD, 41TE
and/or TRANSMIS-
SION - AUTO-
STICK
Ye s®Replace the PCM.
Perform Powertrain Verification Test VER-5A.
No®Go To 10
10 Ignition Off.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure between the Park/Neutral Switch Sense Circuit at the
PCM Connector and Ground.
While moving gear selector between Park and Reverse, watch Ohmmeter display.
Did the display stay below 5.0 ohms at all times?TRANSMISSION -
AUTOMATIC
4-SPD, 41TE
and/or TRANSMIS-
SION - AUTO-
STICK
Ye s®Repair the P/N Switch Sense Circuit for a short to Ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 11
11 Ignition Off.
Disconnect the PCM.
Disconnect the Transmission Range Sensor (TRS) Connector.
Note: Check connectors - Clean/repair as necessary.
With an Ohmmeter, measure the Park/Neutral Switch Sense Circuit from the PCM
to the TRS.
Is the resistance below 5.0 ohms?TRANSMISSION -
AUTOMATIC
4-SPD, 41TE
and/or TRANSMIS-
SION - AUTO-
STICK
Ye s®Go To 12
No®Repair open Park/Neutral Switch Sense Circuit.
Perform Powertrain Verification Test VER-5A.
12 If there are no potential causes remaining, the Transmission Range Sensor is
assumed to be defective.
View repair options.TRANSMISSION -
AUTOMATIC
4-SPD, 41TE
and/or TRANSMIS-
SION - AUTO-
STICK
Repair
Replace the TRS.
Perform Powertrain Verification Test VER-5A.
309
TRANSMISSION
P-1899 PARK/NEUTRAL SWITCH STUCK IN PARK OR IN GEAR Ð
Continued
ProCarManuals.com