AUTO-CRUISE CONTROL SYSTEM Troubleshooting
CHECK CHART
1. CHECKING THE CONTROL UNIT POWER SUPPLY CIRCUIT
Ignition
switch
Description of operation
When the “MAIN” switch (of the cruise-control’s
switches) is switched ON while the ignition switch
is ON, current flows to the ignition switch
to
fuse no. (9) of the junction block, and to the
control switch, the control unit, and to ground.
Troubleshooting hint
ECU terminal voltage
Terminal voltage
Terminal
No.
Conditions
7
Control unit power
When the cruise-control switch (main switch)
is switched ON
Control unit ground
At all times
o v
TSB Revision
Summary of Contents for 1989 Galant
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