Diesel Data: Automotive Repair
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Transmission

DTC P0983: Open in Shift Solenoid Valve D Circuit

NOTE:
^ Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
^ This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Clear the DTC with the HDS.
2. Test-drive the vehicle in 1st gear in the D position for more than 1 second.
3. Check that DTC P0983 recurs.
Is DTC P0983 indicated?
YES - Go to step 7.
NO - Go to step 4.

4. Choose Shift Solenoid D in Miscellaneous Test Menu, and test shift solenoid valve D with the HDS.
Is a clicking sound heard?
YES - Go to step 5.
NO - Go to step 7.

5. Test-drive the vehicle in 1st gear in the D position for more than 1 second.
6. Monitor the OBD status for P0983 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to step 7.
NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at shift solenoid valve D, the shift solenoid harness connector, and the PCM. If the HDS indicates NOT COMPLETED, return to step 4 and recheck.

7. Turn the ignition switch OFF.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connectors A (31P) and C (22P).
10. Measure resistance between PCM connector terminals C4 and A9.





Is there 12 - 25 Ohms?
YES - Go to step 18.
NO - Go to step 11.

11. Disconnect the shift solenoid harness connector.
12. Check for continuity between PCM connector terminal C4 and shift solenoid harness connector terminal No. 8.





Is there continuity?
YES - Go to step 13.
NO - Repair open in the wire between PCM connector terminal C4 and the shift solenoid harness connector, then go to step 15.

13. Remove the shift solenoid harness.
14. Check for continuity between shift solenoid harness connector terminal No. 8 and the shift solenoid valve D connector terminal.





Is there continuity?
YES - Replace shift solenoid valve D, then go to step 15.
NO - Replace the shift solenoid harness, then go to step 15.

15. Clear the DTC with the HDS.
16. Test-drive the vehicle in 1st gear in the D position for more than 1 second.
17. Monitor the OBD status for P0983 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete.
NO - Check for poor connections or loose terminals at shift solenoid valve D, the shift solenoid harness connector, and the PCM, then go to step 1.

18. Update the PCM if it does not have latest software, or substitute a known-good PCM.
19. Test-drive the vehicle in 1st gear in the D position for more than 1 second.
20. Monitor the OBD status for P0983 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM.
NO - If the PCM was updated and screen indicates FAILED, substitute a known-good PCM, then go to step 19. If the PCM was substituted, check for poor connections or loose terminals at shift solenoid valve D, the shift solenoid harness connector, and the PCM, then go to step 1 and recheck. If the screen indicates NOT COMPLETED, go to step 19.
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