|91 3.8L VIN C
||Oxygen sensor voltage stays between 0.35 and 0.55 volts for 30 seconds
when the TPS signal was above 0.55 volts. The engine had been running for
at least 40 seconds with an engine temperature above 110° F.
||Coolant temperature sensor signal indicates a temperature of over 284°
F for 0.4 seconds after the engine had been running for at least 10 seconds.
||Coolant temperature sensor signal indicates a temperature colder than
-36° F for at least 4 seconds after the engine had been running for 2 seconds.
||Charging system voltage was either below 9 volts or above 17 volts for
||PCM did not detect any spark reference pulses within 240 fuel control
reference pulses (80 crank revolutions) while engine was running below 1200
||TPS voltage was above 0.8 volts for 5 seconds when engine was running
and air flow was less than 15 gm/sec, or the TPS voltage was over 4.8 volts
at any time.
||TPS voltage was under 0.2 volts for 4 seconds when the ignition was on.
||Inlet air temperature sensor signal showed an air temperature of -29°
F for 4 seconds.
||Vehicle speed sensor signal showed less than 3 MPH for 2 seconds when
engine speed was greater than 3000 RPM and transmission has not been in
park or neutral for more than 4 seconds. Or vehicle speed goes from above
18 MPH to 0 in less than 2 seconds without applying brake.
||Inlet air temperature sensor signal showed an air temperature over 218°
F for 5 seconds when vehicle speed was greater than 35 MPH.
||Quad-Driver sense voltage shows a low voltage when battery voltage should
be present, or if the sense voltage shows battery voltage when a low voltage
should be present for at least 5 seconds when the engine was running.
||PRNDL indicates a gear other than park or neutral for 0.13 seconds for
3 consecutive startups when ignition was on, engine was off and vehicle
speed was 0. Or the PRNDL status indicators (A, B, C, P) showed an incorrect
combination of Lo and Hi for more than 10 seconds.
||There was no MAF signal for over 4 seconds while engine was running.
||Transmission solenoid "B" has failed in the Off position which
caused transmission to be in 3rd j when 1st gear was desired, or solenoid
"B" failed in the On position which caused transmission to be
in 1st when 3rd gear was desired.
||Vehicle speed went from 35 MPH or more (for 10 seconds) and back to 0
MPH 5 times without a brake input signal.
||Cam sensor signal was not received by PCM for the last 5 seconds while
engine was running.
||The EST signal did not change when the ECM applied bypass voltage to the
||Knock sensor signal was either above 3.5 volts or below 1.5 volts for
at least 20 seconds.
||Oxygen sensor voltage was under 0.25 volts for up to 4 1/2 minutes of
closed loop operation.
||Oxygen sensor voltage was over 0.750 volts for 2 minutes in closed loop
operation with a throttle angle between 0.6 and 1.9 volts.
||Momentary loss of power to Body Computer Module (BCM).
||Security system pass key signal was out of range when the ignition was
turned to On or Start position.
||Cruise vent solenoid was shorted, grounded, or open for 1/2 second or
||Cruise VAC solenoid was shorted, grounded, or open for 1/2 second or longer.
||Cruise servo position sensor was shorted, grounded, or open.
||Cruise switch was open between Cruise Engage and the PCM, or the Set/Coast
switch was closed for too long, or the Resume/Accel switch was closed for
too long, or the Cruise switch was open between the PCM and Brake switch
after the vehicle had made 5 stops of 10 seconds or longer, or any of the
cruise switches have been shorted to voltage.
||Servo Position sensor from the PCM to the cruise servo had a position
above 12% for 1 1/2 seconds.