1991 3.8L Fuel Injection, VIN C |
13 |
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. |
14 |
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. |
15 |
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. |
16 |
Charging system voltage was either below 9 volts or above 17 volts
for 10 seconds. |
17 |
PCM did not detect any spark reference pulses within 240 fuel
control reference pulses (80 crank revolutions) while engine was running below 1200 RPM. |
21 |
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. |
22 |
TPS voltage was under 0.2 volts for 4 seconds when the ignition was
on. |
23 |
Inlet air temperature sensor signal showed an air temperature of
-29° F for 4 seconds. |
24 |
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. |
25 |
Inlet air temperature sensor signal showed an air temperature over
218° F for 5 seconds when vehicle speed was greater than 35 MPH. |
26 |
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. |
31 |
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. |
34 |
There was no MAF signal for over 4 seconds while engine was running. |
36 |
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. |
38 |
Vehicle speed went from 35 MPH or more (for 10 seconds) and back to
0 MPH 5 times without a brake input signal. |
41 |
Cam sensor signal was not received by PCM for the last 5 seconds
while engine was running. |
42 |
The EST signal did not change when the ECM applied bypass voltage to
the ignition module. |
43 |
Knock sensor signal was either above 3.5 volts or below 1.5 volts
for at least 20 seconds. |
44 |
Oxygen sensor voltage was under 0.25 volts for up to 4 1/2 minutes
of closed loop operation. |
45 |
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. |
47 |
Momentary loss of power to Body Computer Module (BCM). |
51 |
MEM-CAL error. |
58 |
Security system pass key signal was out of range when the ignition
was turned to On or Start position. |
61 |
Cruise vent solenoid was shorted, grounded, or open for 1/2 second
or longer. |
62 |
Cruise VAC solenoid was shorted, grounded, or open for 1/2 second or
longer. |
65 |
Cruise servo position sensor was shorted, grounded, or open. |
67 |
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. |
68 |
Servo Position sensor from the PCM to the cruise servo had a
position above 12% for 1 1/2 seconds. |
The Diagnostic Codes and Explanations are derived
from Manufacturer supplied Technical Data. WesTech does not guarantee the accuracy of this
Information nor can it be held liable for providing it. |