( TL19E20A20326919461FAAT00 )

DLC Circuit Troubleshooting

NOTE: Make sure the HDS and the DLC cable of the HDS is normal.

1. Turn the ignition switch to LOCK (0).

1. Connect the HDS to the DLC.
   NOTE: Make sure the HDS is properly connected to the DLC.

1. Turn the ignition switch to ON (II), and read the HDS.

Does the HDS identify the vehicle?

YES | - | Go to Step 4 .
NO | - | Go to Step 21 .

1. Check for Temporary DTCs or DTCs in the PGM-FI system with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES | - | Go to the indicated DTC's troubleshooting.■

NO

-

- If the HDS does not communicate with the SRS system, go to Step 5 .
- If the HDS does not communicate with the VSA system, go to Step 7 .
- If the HDS does not communicate with the EPS system, go to Step 9 .
- If the HDS does not communicate with the IMMOBI (immobilizer) system, go to Step 11 .
- If the HDS does not communicate with the BODY ELECTRICAL system, go to Step 13 .

1. Turn the ignition switch to LOCK (0).

1. Turn the ignition switch to ON (II), and watch the SRS indicator.

Does the SRS indicator stay on?

YES | - | Go to the SRS system's general troubleshooting information. ■
NO | - | Go to Step 15 .

1. Turn the ignition switch to LOCK (0).

1. Turn the ignition switch to ON (II), and watch the VSA indicator.

Does the VSA indicator stay on?

YES | - | Go to the VSA system's general troubleshooting information. ■
NO | - | Go to Step 15 .

1. Turn the ignition switch to LOCK (0).

1. Turn the ignition switch to ON (II), and watch the EPS indicator.

Does the EPS indicator stay on?

YES | - | Go to the EPS system's general troubleshooting information. ■
NO | - | Go to Step 15 .

1. Turn the ignition switch to LOCK (0).

1. Turn the ignition switch to ON (II), and watch the immobilizer indicator.

Does the immobilizer indicator stay on or flash?

YES | - | Go to the immobilizer system's troubleshooting. ■
NO | - | Go to Step 15 .

1. Do the gauge self-diagnostic function.

1. Check the gauge display.

Is Error 2 indicated?

YES | - | Check for B-CAN system DTCs. ■
NO | - | Go to Step 15 .

1. Turn the ignition switch to LOCK (0).

1. Disconnect the HDS from the DLC.

1. Check for continuity between DLC terminal No. 7 and body ground.

Is there continuity?

YES | - | Go to Step 18 .
NO | - | Go to Step 19 .

1. Continue to check for continuity between DLC terminal No. 7 and body ground while disconnecting these connectors, one at a time:
   - SRS unit connector A (39P)
   - VSA modulator-control unit 47P connector
   - EPS control unit connector D (28P)
   - Immobilizer-keyless control unit 7P connector
   - Audio unit 24P connector
   - Driver's under-dash fuse/relay box Q (20P)

Does continuity go away when one of the above components is disconnected?

YES | - | Replace the part that caused an open when it was disconnected.■
NO | - | Repair short in the wire between the DLC (K-line) and the VSA modulator-control unit, the SRS unit, the EPS control unit, the immobilizer-keyless control unit, the audio unit, or the driver's under-dash fuse/relay box.■