( TF09E1PK77100090980FAAT00 )

DTC Troubleshooting: P0980 (22)

DTC P0980:

Shift Solenoid Valve C (Open)

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, 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.

Clear the DTC with the HDS.

Start the engine in P, and wait for at least 1 second.

Check that DTC P0980 recurs.

Is DTC P0980 indicated?

YES	-	Go to Step 7 .
NO	-	Go to Step 4 .

Select Shift Solenoid C in the Miscellaneous Test Menu, and test shift solenoid valve C with the HDS.

Is a clicking sound heard?

YES	-	Go to Step 5 .
NO	-	Go to Step 7 .

Start the engine in P, and wait for at least 1 second. Then:
- Seven-position transmission: Test-drive the vehicle in D3, and let the transmission shift through all three gears. Drive the vehicle in 3rd gear for at least 1 second, then slow down to a stop. Shift into P, and wait for at least 1 second.
- Five-position transmission: Test-drive the vehicle in 1st thru 3rd gears in the sequential shift mode in S. Drive the vehicle in 3rd gear for at least 1 second, then slow down to a stop. Shift into P, and wait for at least 1 second.

Monitor the OBD status for P0980 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS 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 C and the PCM. If the HDS indicates NOT COMPLETED, return to Step 4 and recheck.

Turn the ignition switch to LOCK (0).

Jump the SCS line with the HDS.

Disconnect PCM connectors B (49P) and C (49P).

Measure the resistance between PCM connector terminals B21 and C44 or C48.

Is there 12−25 Ω?

YES	-	Go to Step 15 .
NO	-	Go to Step 11 .

Disconnect the shift solenoid harness connector.

Check for continuity between PCM connector terminal B21 and shift solenoid harness connector terminal No. 1.

Is there continuity?

YES	-	Go to Step 13 .
NO	-	Repair open in the wire between PCM connector terminal B21 and the shift solenoid harness connector, then go to Step 25 .

Remove the shift solenoid harness.

Check for continuity between shift solenoid harness connector terminal No. 1 and the shift solenoid valve C connector terminal.

Is there continuity?

YES	-	Replace shift solenoid valve C, then go to Step 25 .
NO	-	Replace the shift solenoid harness, then go to Step 25 .

Disconnect PCM connector A (49P).

Turn the ignition switch to ON (II).

Measure the voltage between PCM connector terminals A1 and C44 or C48.

Is there battery voltage?

YES	-	Go to Step 20 .
NO	-	Go to Step 18 .

Turn the ignition switch to LOCK (0).

Check for continuity between PCM connector terminals C44 and body ground, and between C48 and body ground.

Is there continuity?

YES	-	Check for a blown No. 7 (10 A) fuse in the under-hood fuse/relay box. If the fuse is OK, repair open or short in the wire between PCM connector terminal A1 and the under-hood fuse/relay box, then go to Step 25 .
NO	-	Repair open in the wires between PCM connector terminals C44, C48 and ground (G101), or repair poor ground (G101), then go to Step 25 .

Connect PCM connectors.

Update the A/T software in the PCM if it does not have the latest software, or substitute a known-good PCM.

Test-drive the vehicle:
- Seven-position transmission: Drive the vehicle in D3, and let the transmission shift through all three gears. Drive the vehicle in 3rd gear for at least 1 second, then slow down to a stop. Shift into P, and wait for at least 1 second.
- Five-position transmission: Drive the vehicle in 1st thru 3rd gears in the sequential shift mode in S. Drive the vehicle in 3rd gear for at least 1 second, then slow down to a stop. Shift into P, and wait for at least 1 second.

Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0980 indicated?

YES	-	If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to Step 1 .
NO	-	Go to Step 24 .

Monitor the OBD status for P0980 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS indicate PASSED?

YES	-	If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. If any other DTCs were indicated on Step 23 , go to the indicated DTC's troubleshooting.■
NO	-	Check for poor connections and loose terminals at shift solenoid valve C and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to Step 1 . If the HDS indicates NOT COMPLETED, return to Step 22 and recheck.

Clear the DTC with the HDS.

Test-drive the vehicle:
- Seven-position transmission: Drive the vehicle in D3, and let the transmission shift through all three gears. Drive the vehicle in 3rd gear for at least 1 second, then slow down to a stop. Shift into P, and wait for at least 1 second.
- Five-position transmission: Drive the vehicle in 1st thru 3rd gears in the sequential shift mode in S. Drive the vehicle in 3rd gear for at least 1 second, then slow down to a stop. Shift into P, and wait for at least 1 second.

Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0980 indicated?

YES	-	Check for poor connections and loose terminals at shift solenoid valve C and the PCM, then go to Step 1 .
NO	-	Go to Step 28 .

Monitor the OBD status for P0980 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS indicate PASSED?

YES	-	Troubleshooting is complete. If any other DTCs were indicated on Step 27 , go to the indicated DTC's troubleshooting.■
NO	-	Check for poor connections and loose terminals at shift solenoid valve C and the PCM, then go to Step 1 . If the HDS indicates NOT COMPLETED, return to Step 26 and recheck.