DTC B1991: Immobilizer TX Short Circuit To Ground: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item	Detecting Condition	Possible Cause
DTC Strategy	Immobilizer data line check (by voltage monitoring)	Short to ground in immobilizer data circuit
Enable Conditions	The communication state between the fob and the fob holder when SSB button is pushed. (The fob is in the holder.)
Threshold Value	Short to ground in immobilizer data circuit (2V and below)
Diagnostic Time	Immediately
DTC Erasing Time	DTC is erased immediately after trouble fixed. (After communication recovery)