P0847
DTC P0847: Short in 3rd Clutch Transmission Fluid Pressure Switch Circuit, or 3rd Clutch Transmission Fluid Pressure Switch Stuck ONNOTE:
^ Record all freeze data and review the General Troubleshooting Information before you troubleshoot.
^ 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. Check the 3rd PRES SWITCH signal with the HDS; in the A/T data list when not in 3rd gear.
Is the 3rd PRES SWITCH OFF?
YES-Go to step 3.
NO-Go to step 6.
3. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).
4. Drive the vehicle in 3rd gear in the D3 position for more than 5 seconds, then shift to the D position, and drive in 4th gear for about 5 seconds. Slow down and stop the wheels.
5. Check the OBD status in DTC Monitor Tool from DTCs/Freeze Data in A/T Mode Menu for a pass/fail test of code P0847.
Did the result indicate a fail?
YES-Go to step 6.
NO-intermittent failure, the system is OK at this time. If the tester indicates NOT COMPLETE, return to step 3 and recheck.
6. Turn the ignition switch OFF.
7. Disconnect the 3rd clutch transmission fluid pressure switch connector.
8. Turn the ignition switch ON (II).
9. Check the 3rd PRES SWITCH signal with the HDS in the A/T data list.
Is the 3rd PRES SWITCH OFF?
YES-Replace the 3rd clutch transmission fluid pressure switch. Then, go to step 14.
NO-Go to step 10.
10. Turn the ignition switch OFF.
11. Jump the SCS line with the HDS.
12. Disconnect PCM connector C (44P).
13. Check for continuity between PCM connector terminal C15 and body ground.
Terminal side of female terminals
Is there continuity?
YES-Repair short to ground in the wire between PCM connector terminal C15 and the 3rd clutch transmission fluid pressure switch, then go to step 14.
NO-Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
14. Clear the DTC with the HDS.
15. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).
16. Drive the vehicle in 3rd gear in the D3 position for more than 5 seconds, then shift to the D position, and drive in 4th gear for more than 5 seconds. Slow down and stop the wheels.
17. Check the OBD status in DTC Monitor Tool from DTCs/Freeze Data in A/T Mode Menu for a pass/fail test of code P0847.
Did the result pass?
YES-The problem has been corrected.
NO-Return to step 1 and recheck.