( TF09E8FK763000Y1000FAAT00 )
DTC Troubleshooting: B1000
DTC B1000:
 Communication Circuit Error (BUS-OFF)
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0) and then back to ON (II).
  1. Wait for 6 seconds or more.
  1. Check for DTCs with the HDS.
Is DTC B1000 indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure. The communication bus line is OK at this time. Check for any worn or shorted wires.■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the appropriate connector at each control unit in the table.
    Unit
    Connector
    Gauge control module
    32P connector
    Climate control unit
    36P connector
    Automatic lighting/rain sensor
    5P connector
    Headlight leveling control unit
    16P connector
    Hands free telephone control unit
    28P connector
    Immobilizer-keyless control unit
    7P connector

  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0) and then back to ON (II).
  1. Wait for 6 seconds.
  1. Check for DTCs with the HDS.
Is DTC B1000 indicated?
YES -
Go to Step 12 .
NO -
Go to Step 17 .
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the under-dash fuse/relay box connector Q (16P).
  1. Check for continuity between under-dash fuse/relay box connector Q (16P) No. 3 terminal and body ground.
Is there continuity?
YES -
Repair a short to ground in the wire between the under-dash fuse/relay box connector and the affected control unit.■
NO -
Go to Step 15 .
  1. Turn the ignition switch to ON (II).
  1. Measure the voltage between under-dash fuse/relay box connector Q (16P) No. 3 terminal and body ground.
Is there voltage?
YES -
Repair a short to power in the wire between the under-dash fuse/relay box connector and the affected control unit.■
NO -
  1. Turn the ignition switch to LOCK (0).
  1. Reconnect the gauge control module 32P connector.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0) and then back to ON (II).
  1. Wait for 6 seconds or more.
  1. Check for DTCs with the HDS.
Is DTC B1000 indicated?
YES -
NO -
Go to Step 24 .
  1. Reconnect the climate control unit 36P connector. If the climate control unit is not equipped, skip this step, then go to Step 30 .
  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0) and then back to ON (II).
  1. Wait for 6 seconds or more.
  1. Check for DTCs with the HDS.
Is DTC B1000 indicated?
YES -
NO -
Go to Step 30 .
  1. Reconnect the automatic lighting/rain sensor 5P connector. If the automatic lighting/rain sensor is not equipped, skip this step, then go to Step 36 .
  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0) and then back to ON (II).
  1. Wait for 6 seconds or more.
  1. Check for DTCs with the HDS.
Is DTC B1000 indicated?
YES -
NO -
Go to Step 36 .
  1. Reconnect the headlight leveling control unit 16P connector. If the headlight leveling control unit is not equipped, skip this step, then go to Step 42 .
  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0) and then back to ON (II).
  1. Wait for 6 seconds or more.
  1. Check for DTCs with the HDS.
Is DTC B1000 indicated?
YES -
Replace the headlight leveling control unit .■
NO -
If the hands free telephone system is equipped, go to Step 42 . If not equipped, replace the immobilizer-keyless control unit. ■
  1. Reconnect the hands free telephone control unit 28P connector.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0) and then back to ON (II).
  1. Wait for 6 seconds or more.
  1. Check for DTCs with the HDS.
Is DTC B1000 indicated?
YES -
NO -