M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-65
Diagnostic Item 2: Diagnose the CAN_L side bus line.
CAUTION
Before checking CAN bus lines and their inter-
connected components, "ground" yourself, by
touching a metal object such as an unpainted
pipe, this will discharge any potentially damag-
ing static that may have built up.
CAUTION
When measuring resistance value or voltage in
CAN bus lines, use a digital multimeter. If not
using a digital multimeter, the equipments, which
are connected through the CAN communication
lines, may be damaged.
CAUTION
Disconnect the negative battery terminal when
measuring the resistance value in the CAN bus
line. If you fail to do so, the equipments, which
are connected through the CAN communication
lines, may be damaged.
CAUTION
Always use the test harness when measuring the
voltage or resistance value at the female connec-
tor. If you fail to do so, connectors may be dam-
aged.
CAUTION
If there is a problem in the connector(s) (includ-
ing terminals) or wire(s) of the instrument panel
wiring harness assembly (the wiring harness
connected to the steering wheel sensor, the data
link connector and the resistor) and the trans-
mission wiring harness assembly (the wiring har-
ness connected to the G and yaw rate sensor
connector and intermediate connector E-123),
cut and repair the defective wire so that the
frayed end of the twisted wire should be within
10 cm (4.0 inches). If it exceeds 10 cm (4.0
inches), twist the wiring harness just like the
original twisted wire. If the frayed end exceeds 10
cm (4.0 inches), a communication error may be
caused.
CAUTION
If you repair the CAN bus line of the instrument
panel wiring harness assembly (the wiring har-
ness connected to the steering wheel sensor, the
data link connector and the resistor) and the
transmission wiring harness assembly (the wir-
ing harness connected to the G and yaw rate
sensor connector and intermediate connector E-
123), observe the precautions regarding how to
repair wiring harness. If a new wire is added or a
splice point is modified for the CAN_L or CAN_H
line, an error in the CAN communication may be
caused.
CAUTION
If there is a problem in the CAN bus line or the
connectors on the control wiring harness assem-
bly (the wiring harness connected to the M-
ASTC-ECU, the power control module and inter-
mediate connector E-123), do not attempt to
repair the wiring harness or connector(s), but
replace the wiring harness assembly. If a wire is
added or the connector(s) are repaired, an error
in the CAN communication may be caused.
AC203824
CONNECTOR
TWISTED WIRE
AB
10 cm
(4.0 inches)