DLC Circuit Troubleshooting - PGM-FI System
  1. Connect DLC terminal No. 7 to body ground with a jumper wire.
  1. Check for continuity between body ground and these connector terminals:
    Connector
    Terminal
    SRS unit A (28P)
    No. 24 (LT BLU)
    VSA control unit 37P
    No. 26 (LT BLU)
    EPS control unit D (28P)
    No. 17 (LT BLU)
    Immobilizer control unit-receiver 7P
    No. 5 (LT BLU)
    Audio unit 17P
    No. 6 (LT BLU)
    Under-dash fuse/relay box (Q) (16P)
    No. 8 (LT BLU)

Is there continuity between the DLC terminal and each of the terminals in the chart?
YES -
Replace the unit which cannot communicate with HDS.■
NO -
Repair open in the wire between the DLC (K-line) and the appropriate connector.■
  1. Do the gauge self-diagnostic function.
  1. Check for B-CAN system DTCs without the HDS.
Is DTC B1168, B1169, and/or B1178 indicated?
YES -
Go to Step 35 .
NO -
Go to Step 23 .
  1. Turn the ignition switch OFF.
  1. Disconnect the HDS from the DLC.