Bonneville V6-3.8L SC VIN 1 (1995)
Engine Control Module: Specifications
PCM Connector A-B (Red)
POWERTRAIN CONTROL MODULE (PCM) VOLTAGE CHART
This PCM voltage chart is for use with a digital voltmeter to further aid in diagnosis. The voltages you get may vary due to low battery charge or
other reasons, but they should be very close. The B+ symbol indicates a nominal system voltage of 12-14 volts.
CONDITIONS FOR TESTING
^
Engine at operating temperature (upper radiator hose hot).
^
Engine idling in "Closed Loop" (for "Engine Run" column) in park or neutral.
^
Test terminal not grounded.
^
Scan tool not installed.
^
Accessories "OFF."
NOTE: Before checking voltages, be sure PCM and engine grounds are clean and tight.
POWERTRAIN CONTROL MODULE (PCM) VOLTAGE CHART
This PCM voltage chart is for use with a digital voltmeter to further aid in diagnosis. The voltages you get may vary due to low battery charge or
other reasons, but they should be very close. The B+ symbol indicates a nominal system voltage of 12-14 volts.
CONDITIONS FOR TESTING
^
Engine at operating temperature (upper radiator hose hot).
^
Engine idling in "Closed Loop" (for "Engine Run" column) in park or neutral.
^
Test terminal not grounded.
^
Scan tool not installed.
^
Accessories "OFF."
NOTE: Before checking voltages, be sure PCM and engine grounds are clean and tight.
CHART LEGEND
(1) B+ for first two seconds.
(2) Varies.
*
Less than 0.5 volts (500 mV).
** If equipped.
NOTICE: Before "Closed Loop" operation can occur the following must take place:
^
Engine coolant temperature above 29°C (84°F).
^
Heated Oxygen Sensor (HO2S) voltage varying.
^
Engine RPM greater than 800 for 15 consecutive seconds after 1 and 2 have occurred.
RED 32 PIN CONNECTOR
32 Pin A-B Connector (RED)
