I have to replace a solenoid pack in the

Tiny
BIGWICK10
  • MEMBER
  • 2002 DODGE DURANGO
  • V8
  • 4WD
  • AUTOMATIC
  • 98,000 MILES
I have a code PO876, in order to fix this code do I need to replace the selonoid pack in the transmission and what is required to do so, thanks Mike
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Sunday, October 24th, 2010 AT 10:42 AM

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Tiny
BMRFIXIT
  • EXPERT
These are the steps needed to verify the problem
and to avoid replacing good parts

DTC P0876: UD PRESSURE SWITCH SENSE CIRCUIT
Circuit Description
DTC P0876 will set if UD pressure switch is open or closed at the wrong time in a given gear. For example, this DTC would set if UD pressure switch remained off while transmission was in second gear. Transmission system will default to immediate shutdown routine.
Possible Cause
The following items may be area of concern:
Transmission control relay-related DTCs present.
Faulty pressure switch.
Intermittent wiring and connector problems.
UD pressure switch sense circuit shorted to voltage, shorted to ground or open.
Open in transmission control relay output circuit.
Faulty TCM.

Diagnostic Procedure
1.Using scan tool, check for other transmission-related DTCs. If DTCs P0888, P0890 or P0891 are present, perform appropriate diagnostic test. If no other transmission-related DTCs are present, go to next step.

2.Using scan tool, check STARTS SINCE SET counter. If counter displays 2 or less, go to next step. If counter does not display 2 or less, go to step 10 .

NOTE: Failure to remove starter relay can cause a NO RESPONSE FROM TCM condition.
3.Turn ignition switch to LOCK position. Remove starter relay from Integrated Power Module (IPM) or Power Distribution Center (PDC). Install Transmission Simulator (8333). Turn ignition on. Place pressure switch selector on UD. Using scan tool, monitor UD pressure switch state while pressing pressure switch test button. If UD pressure switch state changed while pressing button, go to next step. If pressure switch state does not change while pressing button, go to step 5 .

NOTE: Consult manufacturer's warranty documentation (if applicable) prior to performing repairs. Replace transmission or solenoid/TRS assembly as required by current warranty policy.

4.If no other potential causes for DTC P0876 remain, UD pressure switch is assumed to be faulty. Replace solenoid/TRS assembly as necessary. See TRANSMISSION SOLENOID/TRANSMISSION RANGE SENSOR under REMOVAL & INSTALLATION in appropriate SERVICING article in AUTOMATIC TRANSMISSIONS.
NOTE: When testing output circuit with a test light, ensure test light illuminates brightly. Compare test light brightness of circuit to brightness of test light when connected to direct battery voltage. If circuit does not illuminate with same brightness as direct battery voltage, circuit must be repaired.

5.Turn ignition switch to LOCK position. Disconnect solenoid/TRS assembly harness connector. Turn ignition on. Connect test light between ground and transmission control relay output circuit at solenoid/TRS assembly harness connector terminal No. 10. See WIRING DIAGRAMS . If test light illuminates brightly, remove test light and go to next step. If test light does not illuminate brightly, repair open or high resistance in circuit. If fuse is open, ensure to check for a short to ground.

6.Turn ignition switch to LOCK position. Disconnect TCM harness connector. Measure resistance of UD pressure switch sense circuit between TCM harness connector terminal No. 29 and solenoid/TRS assembly harness connector terminal No. 18. If resistance is greater than 5 ohms, repair open circuit. If resistance is 5 ohms or less, go to next step.

7.Measure resistance between ground and UD pressure switch sense circuit at solenoid/TRS assembly harness connector terminal No. 18. If resistance is less than 5 ohms, repair circuit for short to ground. If resistance is 5 ohms or greater, go to next step.

8.Remove transmission control relay from Integrated Power Module (IPM) or Power Distribution Center (PDC). Using fused jumper wire, jumper fused B+ circuit (terminal No. 30) and transmission control relay output circuit (terminal No. 87) together at transmission control relay connector. See WIRING DIAGRAMS . Turn ignition on. Measure voltage of UD pressure switch sense circuit at TCM harness connector terminal No. 29. If voltage is greater than .5 volt, repair circuit for short to voltage. If voltage is .5 volt or less, and go to next step.

9.If no other potential causes for DTC P0876 remain, TCM is assumed to be faulty. Repair or replace as necessary. See TRANSMISSION CONTROL MODULE under REMOVAL & INSTALLATION.

10.Conditions necessary to set DTC are not present at this time. Check for a sump filter not installed correctly or reverse carrier snap ring dislodged. Repair as necessary. Using appropriate wiring diagram as a guide, inspect wiring and connectors associated with circuits in question. See WIRING DIAGRAMS . Wiggle wires while checking for shorted and open circuits. Repair as necessary. If circuits are okay, testing is complete.


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Sunday, October 24th, 2010 AT 8:09 PM

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