VSA DTC Troubleshooting: 91
DTC 91:
 F-CAN Communication
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Turn the ignition switch to LOCK (0), then turn it to ON (II).
  1. Check for DTCs with the HDS.
Is DTC 92 indicated with DTC 91 at the same time?
YES -
Do the DTC 92 troubleshooting. ■
NO -
If only DTC 91 is indicated, go to step 5. If no DTCs are indicated, intermittent failure, the system is OK at this time. Check for loose terminals between the yaw rate-lateral acceleration sensor 4P connector, the ECM connector A (49P) (L13Z1 engine model) or ECM connector A (44P) (except L13Z1 engine model), and the VSA modulator-control unit 46P connector. Refer to intermittent failures troubleshooting.
  1. Turn the ignition switch to LOCK (0).
  1. Short the SCS line with the HDS.
  1. Disconnect the ECM connector A (49P) (L13Z1 engine model) or ECM connector A (44P) (except L13Z1 engine model).
  1. Disconnect the VSA modulator-control unit 46P connector.
  1. Check for continuity between VSA modulator-control unit 46P connector terminals No. 38, No. 39 and ECM connector A (49P) terminals No. 4, No. 3 (L13Z1 engine model) or ECM connector A (44P) terminals No. 37, No. 36 (except L13Z1 engine model) individually.
Is there continuity?
YES -
Go to Step 10 .
NO -
Repair open in the wire between the ECM and the VSA modulator-control unit.■
  1. Disconnect the yaw rate-lateral acceleration sensor 4P connector (without i-SHIFT model) or yaw rate-lateral/longitudinal acceleration sensor 4P connector (with i-SHIFT model).
  1. Turn the ignition switch to ON (II).