DTC Troubleshooting
DTC P0746: A/T Clutch Pressure Control Solenoid Valve A Stuck OFFNOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF through a strainer. Inspect the strainer for metal debris or excessive clutch material.
Does the strainer have metal debris or excessive clutch material?
YES - Replace the transmission, then go to step 11.
NO - Replace the ATF, then go to step 4.
4. Clear the DTC with the HDS.
5. Test-drive the vehicle in the D position through all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
6. Retest-drive the vehicle in the D position through all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
7. Monitor the OBD STATUS for P0746 in the DTCs MENU with the HDS.
Does the screen indicate FAILED?
YES - Go to step 8.
NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen indicates NOT COMPLETED, return to step 5 and recheck.
8. Clear the DTC with the HDS.
9. Choose Clutch Pressure Control (Linear) Solenoid A in Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve A with the HDS.
Is the system OK?
YES - Go to step 18.
NO - Follow instructions indicated on the HDS test result, but if the tester has not determined the cause of the failure, go to step 10. If any part was replaced, go to step 11.
10. Inspect A/T clutch pressure control solenoid valve A.
Does A/T clutch pressure control solenoid valve A work properly?
YES - Repair the hydraulic system related to CPC valve A, or replace the transmission, then go to step 11.
NO - Replace A/T clutch pressure control solenoid valve A, then go to step 11.
11. Reconnect all connectors.
12. Turn the ignition switch ON (II).
13. Clear the DTC with the HDS.
14. Test-drive the vehicle in the D position through all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
15. Retest-drive the vehicle in the D position through all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
16. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0746 indicated?
YES - Check for poor connections or loose terminals, then go to step 5.
NO - Go to step 17.
17. Monitor the OBD STATUS for P0746 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete.
NO - Return to step 5 and recheck.
18. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
19. Test-drive the vehicle in the D position through all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
20. Retest-drive the vehicle in the D position through all five gears at speeds over 12 mph (20 km/h) for more than 20 seconds, then slow down to a stop.
21. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0746 indicated?
YES - Check for poor connections or loose terminals at the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 19. If the PCM was substituted, go to step 1.
NO - Go to step 22.
22. Monitor the OBD STATUS for P0746 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete.
NO - Return to step 5 and recheck.