DTC Troubleshooting: 7, 13
LKAS Control Unit DTC 7:
 F-CAN Communication with the VSA Modulator-control Unit Malfunction
LKAS Control Unit DTC 13:
 F-CAN Communication Malfunction (Packet Error of the VSA Modulator-control Unit)
  1. Turn the ignition switch to LOCK (0), then turn it to ON (II), and wait for 20 seconds or more.
  1. Watch the LKAS indicator.
Does the LKAS indicator come on?
YES -
Go to Step 4 .
NO -
Intermittent failure, the system is OK at this time.■
Is DTC 7 or 13 indicated?
YES -
Go to Step 5 .
NO -
Troubleshoot the indicated DTC(s).■
Is DTC 112 indicated?
YES -
Go to Step 6 .
NO -
Check for loose terminals in the LKAS control unit connectors, and repair if necessary. If all connections are OK, replace the LKAS control unit. ■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the LKAS control unit 26P connector and the VSA modulator-control unit 47P connector.
  1. Check for continuity between LKAS control unit 26P connector No. 12 terminal and VSA modulator-control unit 47P connector No. 12 terminal.
Is there continuity?
YES -
Go to Step 9 .
NO -
Repair an open in the wire between the LKAS control unit and the branch of the F-CAN line (CANH).■
  1. Check for continuity between LKAS control unit 26P connector No. 25 terminal and VSA modulator-control unit 47P connector No. 13 terminal.
Is there continuity?
YES -
Check for loose terminals in the VSA modulator-control unit connector, and repair if necessary. If all connections are OK, replace the VSA modulator-control unit. ■
NO -
Repair an open in the wire between the LKAS control unit and the branch of the F-CAN line (CANL).■