DTC Troubleshooting
DTC Troubleshooting: P0842 (56)
DTC P0842:
CVT Driven Pulley Pressure Sensor (Short)
NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information How To Troubleshoot The CVT System.
- This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
1. Check the Driven Pulley Pressure Sensor (V) with the HDS in the A/T Data List in A/T Mode Menu.
Is the Driven Pulley Pressure Sensor (V) 0.21 V or less?
YES -
Go to step 2.
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CVT driven pulley pressure sensor and the PCM.
2. Turn the ignition switch to LOCK (0).
3. Disconnect the CVT driven pulley pressure sensor connector.
4. Turn the ignition switch to ON (II).
5. Check the Driven Pulley Pressure Sensor (V) with the HDS in the A/T Data List in A/T Mode Menu.
Is the Driven Pulley Pressure Sensor (V) 0.21 V or less?
YES -
Go to step 6.
NO -
Go to step 10.
6. Turn the ignition switch to LOCK (0).
7. Jump the SCS line with the HDS.
8. Disconnect PCM connector C (49P).
9. Check for continuity between CVT driven pulley pressure sensor 3P connector terminal No. 2 and body ground.
Is there continuity?
YES -
Repair a short in the wire between PCM connector terminal C39 and the CVT driven pulley pressure sensor, then go to step 20.
NO -
Go to step 15.
10. Measure the voltage between CVT driven pulley pressure sensor 3P connector terminals No. 1 and No. 3.
Is there about 5 V?
YES -
Replace the CVT driven pulley pressure sensor CVT Driven Pulley Pressure Sensor Replacement, then go to step 20.
NO -
Go to step 11.
11. Turn the ignition switch to LOCK (0).
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector B (49P).
14. Check for continuity between PCM connector terminal B19 and CVT driven pulley pressure sensor connector terminal No. 1.
Is there continuity?
YES -
Go to step 15.
NO -
Repair an open in the wire between PCM connector terminal B19 and the CVT driven pulley pressure sensor, then go to step 20.
15. Reconnect all connectors.
16. Update the PCM if it does not have the latest software PCM Update, or substitute a known-good PCM.
17. Start the engine in P, and turn it off for at least 10 seconds after starting the engine. Restart the engine in P, and wait for at least 10 seconds.
18. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0842 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 19.
19. Monitor the OBD status for P0842 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?
YES -
If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM Service and Repair. If any other DTCs were indicated on step 18, go to the indicated DTC's troubleshooting.
NO -
Check for poor connections and loose terminals at the CVT driven pulley pressure sensor 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 17 and recheck.
20. Reconnect all connectors.
21. Clear the DTC with the HDS.
22. Start the engine in P, and turn it off for at least 10 seconds after starting the engine. Restart the engine in P, and wait for at least 10 seconds.
23. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0842 indicated?
YES -
Check for poor connections and loose terminals at the CVT driven pulley pressure sensor and the PCM, then go to step 1.
NO -
Go to step 24.
24. Monitor the OBD status for P0842 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?
YES -
Troubleshooting is complete. 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 the CVT driven pulley pressure sensor and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 22 and recheck.