Note On Intermittents

Manipulate related ECM and BCM wiring in each gear range while looking for a change in BD41 or EI74 values to check for intermittent open or short to ground. Also check terminals for good contact at ECM, BCM and gear selector switch. If good contact exists and Code B127 continues to set, replace BCM.

Fig 1: Code B127, Gear Selector Switch Circuit (1 of 2)

Fig 2: Code B127, Gear Selector Switch Circuit (2 of 2)