Metro L3-061 1.0L VIN 6 TBI (1998)
Electrical Load Idle-Up Signal Diagnosis
Circuit Description
The powertrain control module (PCM) receives an electrical load idle-up signal from the diode module. The electrical load idle-up signal is present
whenever one or more of the following systems is turned ON (operating):
^
Headlights
^
Rear Window Defogger
^
Heater Blower Motor
The idle speed control (ISC) motor increases the throttle valve opening in order to compensate for the additional electrical load.
Diagnostic Aids
