DTC Troubleshooting: 86
DTC 86:
 F-CAN Communication
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Start and run the engine for at least 5 seconds.
  1. Check for DTCs with the HDS.
Is DTC 86 indicated?
YES -
Go to Step 5 .
NO -
Check the COMMU FI ECU, COMMU A/T, COMMU GAUGE, COMMU YAW RATE/G, and COMMU ACC in the VSA FREEZE DATA with the HDS. Then check for F-CAN communication lines continuty to the appropriate system or sensor and loose terminals in the appropriate system or sensor connectors.■
  1. Check the COMMU FI ECU, COMMU A/T, COMMU GAUGE, COMMU YAW RATE/G, and COMMU ACC in the VSA DATA LIST with the HDS.
Is there communication error in the system or sensor?
YES -
Go to Step 6 .
NO -
Go to Step 9 .
  1. Check for F-CAN communication lines continuity to the appropriate system or sensor.
Is there F-CAN communication lines continuity?
YES -
Go to Step 7 .
NO -
Repair open in the appropriate wire.■
  1. Check for loose terminals in the appropriate system or sensor connectors.
Is there appropriate system or sensor connectors OK?
YES -
Go to Step 8 .
NO -
Repair or reconnect the connector securely.■
  1. Check for the appropriate system or sensor DTCs with the HDS.
Is DTC indicated?
YES -
Do the appropriate DTC troubleshooting.■
NO -
Go to Step 9 .
  1. Start and run the engine for at least 5 seconds.
  1. Check for DTCs with the HDS.
Is DTC 86 indicated?
YES -
Check for loose terminals in the VSA modulator-control unit 47P connector. If the VSA modulator-control unit was updated, substitute a known-good VSA modulator-control unit, then retest. If the VSA modulator-control unit was substituted, go to Step 1 .
NO -
If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the original VSA modulator-control unit. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.■