FCM SIACM Run/Start Driver Open (Stored)

Test 1:

SYMPTOM
FCM, SIACM RUN-START DRIVER OPEN - STORED

TEST NOTE
This symptom is diagnosed using the test FCM, ORC RUN ONLY DRIVER OPEN - STORED.

WHEN MONITORED
When the ignition is turned OFF, the microprocessor controlled transistor (high side driver) places a diagnostic voltage on the SIACM Run-Start circuit for 60 seconds. An open High Side Driver (HSD) circuit voltage is between 2.4 and 5.0 volts.

SET CONDITION
This code will set within 10 second, if the microprocessor senses 2.4 to 5.0 volts on the HSD. Note: the diagnostic voltage will only last for 60 seconds after the ignition is turned OFF

POSSIBLE CAUSES
- Checking for active front control module DTCS
- Stored code present