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DTC B109E:87 [BCM]: Notes

DTC B109E:87 Communication error between keyless receiver and BCM
DETECTION CONDITION 
  • BCM cannot receiver the signal from keyless receiver continuously 12 times  .
FAIL-SAFE FUNCTION 
  • Inhibits the door lock control using the transmitter.
POSSIBLE CAUSE 
  • Keyless receiver connector or terminals malfunction
  • BCM connector or terminals malfunction
  • Short to ground in wiring harness between keyless receiver terminal D and BCM terminal 4K
  • Short to power supply in wiring harness between keyless receiver terminal D and BCM terminal 4K
  • Open circuit in wiring harness between keyless receiver terminal D and BCM terminal 4K
  • Keyless receiver malfunction
  • BCM malfunction
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