Circuit/System Verification

Engine running for 10 s.
Ignition ON, engine OFF, verify DTC U0400-U05FF is not set.
- If DTC U0400-U05FF is set along with other DTCs set
  Diagnose all other DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If DTC U0400-U05FF is set without other DTCs set
1. Program the device specified by the DTC descriptor.
2. Verify the DTC does not set.
  - If the DTC sets, replace the appropriate device.
  - If the DTC does not set
3. All OK.
- If DTC U0400-U05FF is not set
All OK