DTC B1317/B1318 [Advanced Keyless Entry And Start System]: Notes

DTC B1317/B1318 CHART (ADVANCED KEYLESS ENTRY AND START SYSTEM)

DTC B1317	Keyless control module power supply voltage increases (16.1 V or more)
DTC 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	When the keyless control module power supply voltage is not within 9-16 V  Open or short circuit in wiring harness between battery and keyless control module Battery malfunction Keyless control module malfunction
Courtesy of MAZDA MOTORS CORP.