DTC Troubleshooting: 11-01
DTC 11-01:
 Low/High IG1-terminal Voltage (Initial Diagnosis)
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Turn the ignition switch to LOCK (0).
  1. Start the engine.
  1. Wait at least 60 seconds.
  1. Check for DTCs with the HDS.
Is DTC 11-01 indicated?
YES -
Go to Step 7 .
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the EPS control unit.■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the EPS control unit connector D (28P).
  1. Turn the ignition switch to ON (II).
  1. Wait at least 60 seconds.
  1. Measure the voltage between EPS control unit connector D (28P) terminals No. 16 and body ground.
Is there battery voltage?
YES -
Check for loose terminals in the EPS control unit connectors, and repair if necessary. If no poor connections are found, replace the EPS control unit. ■
NO -
If there is no voltage, repair open in the wire between the No. 6 (7.5 A) fuse in the driver's under-dash fuse/relay box and the EPS control unit. If there is any voltage, check the battery, and troubleshoot the alternator regulator circuit: R20A3 engine model, K24Z3 engine model. ■