Problem: The vehicle owner’s concern was
that the anti-lock brake system (ABS) warning light was on.
Details: The first thing the technician did
was connect a scan tool to pull any diagnostic trouble codes
(DTCs). There was only one, C2402 – Motor Electrical. The tech
found that this code could occur if there was no voltage signal
on the ABS pump motor monitoring wire or there was lack of
battery power (B+) to the pump motor. He called ALLDATA
Tech-Assist for advice.
The Tech-Assist consultant suggested checking all related fuses
and to be sure there was B+ voltage to the ABS pump motor at ABS
module connector E37, pin 9 (Red wire), and that there were good
grounds at pins 24 and 8 (Black wires). If there was no voltage,
he suggested testing the 40A ABS Fusible Link 1 located in the
engine room fuse and relay box.
The technician’s circuit testing revealed there was no voltage at
the ABS Module connector E37, pin 9 (Red wire). The fusible link
1 had B+ voltage (see wiring diagram).
Confirmed Repair: He inspected the wiring
and found a corroded and broken wire about six inches from the
ABS module. He repaired the wire and cleared to DTC. The ABS
light remained off after a good test drive. Fixed!