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DTC B1317/B1318 [Advanced Keyless System]: Notes

DTC B1317/B1318 DETECTION CONDITION AND POSSIBLE CAUSE

DTC B1317 Keyless control module power supply voltage increases (16.1 V or more)
B1318 Keyless control module power supply voltage decreases (less than, 9 V)
DETECTION CONDITION 
  • When the keyless control module power supply voltage is not within 9-16 V  .
POSSIBLE CAUSE 
  • Open or short circuit in wiring harness between battery and keyless control module
  • Battery malfunction
  • Keyless control module malfunction
G04327030Courtesy of MAZDA MOTORS CORP.