DTC P084C: Short in Line Pressure Switch Circuit, or Line Pressure Switch Stuck ON
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the GENERAL TROUBLESHOOTING INFORMATION
- If DTC P084C is stored in the PCM, engine torque is restricted because of the fail-safe function.
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Check the Line Pressure Switch signal with the HDS in the A/T Data List.
Is the Line Pressure Switch ON?
YES -Go to step 4.
NO -Intermittent failure, the system is OK at this time.
- Turn the ignition switch to LOCK (0).
- Disconnect the line pressure switch connector.
- Turn the ignition switch to ON (II).
- Check the Line Pressure Switch signal with the HDS in the A/T Data List.
Is the Line Pressure Switch OFF?
YES -Replace the line pressure switch (see LINE PRESSURE SWITCH REPLACEMENT ).
NO -Go to step 8.
- Turn the ignition switch to LOCK (0).
- Jump the SCS line with the HDS.
- Disconnect PCM connector C (49P).
- Check for continuity between PCM connector terminal C35 and body ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Repair a short to body ground in the wire between PCM connector terminal C35 and the line pressure switch.
NO -Replace the PCM (see PCM REPLACEMENT ).