DTC Troubleshooting: P0523 (22)
DTC P0523:
 EOP Sensor Circuit High Voltage
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
  1. Turn the ignition switch ON (II).
  1. Check the EOP SENSOR in the DATA LIST with the HDS.
Is there about 4.79 V or more?
YES -
Go to Step 3 .
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the EOP sensor and the ECM.■
  1. Turn the ignition switch OFF.
  1. Disconnect the EOP sensor 3P connector.
  1. Connect EOP sensor 3P connector terminals No. 2 and No. 3 with a jumper wire.
  1. Turn the ignition switch ON (II).
  1. Check the EOP SENSOR in the DATA LIST with the HDS.
Is there about 4.79 V or more?
YES -
Go to Step 8 .
NO -
Go to Step 18 .
  1. Remove the jumper wire.