Problem: The vehicle stalled only when
activating the left turn signal. The customer also noticed that
the left headlight was dim. The customer replaced the headlight
but there was no change. The stalling problem began to get
progressively worse until it happened constantly.
Details: The technician found only 2.0 volts on
the ground circuit of the headlight and the left turn signal.
Both components were grounded at the same location (G107), which
is located on the engine block. Although the ground looked good
and tight, the bolt was corroded and a little rusty. The wiring
diagram showed that the fuel pump relay was also grounded at the
Confirmed Repair: The technician wire-brushed
the contact point on the engine block and replaced the bolt and
washer. The headlight was now bright and the stalling problem
with the left turn signal was also resolved.