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VSA DTC Troubleshooting: 86-11, 86-21, 86-22, 86-23, 86-24, 86-25, 84-41

DTC 86-11:
 F-CAN Communication with ECM/PCM Malfunction
DTC 86-21:
 F-CAN Communication with Engine Malfunction
DTC 86-22:
 F-CAN Communication with Engine Malfunction
DTC 86-23:
 F-CAN Communication with Engine Malfunction
DTC 86-24:
 F-CAN Communication with Engine Malfunction
DTC 86-25:
 F-CAN Communication with Engine Malfunction
DTC 86-41:
 F-CAN Communication with EAT/TCM Malfunction
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Test-drive the vehicle. Drive the vehicle at 10 km/h (7 mph) or more.
    NOTE: Drive the vehicle on a straight section of road, not on a lift.
  1. Check for DTCs with the HDS.
Is DTC 86-11, 86-21, 86-22, 86-23, 86-24, 86-25, and/or 86-41 indicated?
YES -
If the DTC 86-01 is indicated at the same time, do the DTC 86-01 troubleshooting. If the DTC 86-01 is not indicated, go to Step 5 .
NO -
If any other DTCs are indicated, go to the indicated DTCs troubleshooting. If DTCs are not indicated, intermittent failure, the system is OK at this time. Check for loose terminals between ECM/PCM connector A (49P) and the VSA modulator-control unit 36P connector. Refer to intermittent failures troubleshooting.
  1. Turn the ignition switch to LOCK (0).
  1. Short the SCS line with the HDS.
  1. Disconnect ECM/PCM connector A (49P).
  1. Check for continuity between the VSA modulator-control unit 36P connector terminal and ECM/PCM connector A (49P) terminal (see table).
    Sign
    VSA Modulator-control Unit 36P Connector Terminal
    ECM/PCM Connector A (49P) Terminal
    CAN-L
    No. 1
    No. 4
    CAN-H
    No. 14
    No. 3

Is there continuity?
YES -
Go to Step 10 .
NO -
Repair open in the wire between the ECM/PCM and the VSA modulator-control unit.■
  1. Reconnect all connectors.
  1. Clear the DTC with the HDS.
  1. Test-drive the vehicle. Drive the vehicle at 10 km/h (7 mph) or more.
    NOTE: Drive the vehicle on a straight section of road, not on a lift.
  1. Check for DTCs with the HDS.
Is DTC 86-11, 86-21, 86-22, 86-23, 86-24, 86-25, and/or 86-41 indicated?
YES -
Go to Step 15 .
NO -
If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM.
  1. Test-drive the vehicle. Drive the vehicle at 10 km/h (7 mph) or more.
    NOTE: Drive the vehicle on a straight section of road, not on a lift.
  1. Check for DTCs with the HDS.
Is DTC 86-11, 86-21, 86-22, 86-23, 86-24, 86-25, and/or 86-41 indicated?
YES -
Check for loose terminals in the VSA modulator-control unit 36P 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.■