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Home >> Suzuki >> 2012 >> Grand Vitara Base >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Communication System >> Diagnostic Information and Procedures >> Troubleshooting for Lost Communication >> Troubleshooting >> Diagnosis flow code: B
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Diagnosis flow code: B

Step Action Yes No
CAN communication circuit check 
  1. Turn ignition switch to OFF position.
  2. Disconnect connector from BCM and ABS/ESP® control module.
  3. Check for proper terminal connection to CAN communication circuit at BCM and ABS/ESP® control module connectors.
  4. If OK, check CAN communication circuits between BCM connector and ABS/ESP® control module connector for breaking.

Is each CAN communication circuit in good condition? 
Substitute a known-good ABS/ESP® control module and recheck. Repair CAN communication circuit.