DTC Troubleshooting: 22-01
DTC 22-01:
 Engine Speed Signal (Initial Diagnosis)
NOTE: If the MIL indicator is on, troubleshoot the fuel and emission systems first.
  1. Start the engine.
  1. Check the ENGINE SPEED in the EPS DATA LIST with the HDS.
Is there 0 rpm (min −1 ) at idle?
YES -
Go to Step 3 .
NO -
Intermittent failure, the system is OK at this time.■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the EPS control unit connector D (28P).
  1. Start the engine.
  1. Measure the voltage between EPS control unit connector D (28P) terminal No. 3 and body ground.
Is there any 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 -
Go to Step 7 .
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the EPS control unit connector D (28P).