1988-1989 3.1L Multi Port Fuel Injection, VIN T |
13 |
Oxygen sensor voltage stays between 0.35 and 0.55 volts for 60
seconds when the TPS signal was above 4%. The engine had been running for at least 2
minutes. |
14 |
Coolant temperature sensor signal indicates a temperature of over
275° F for 3 seconds. |
15 |
Coolant temperature sensor signal indicates a temperature colder
than -38° F for at least 20 seconds. |
21 |
TPS voltage was above 4.3 volts for 10 seconds when engine was
running and air flow was less than 17 gm/sec. |
22 |
TPS voltage was under 0.25 volts for 4 seconds when the ignition was
on. |
23 |
Manifold air temperature sensor signal showed an air temperature of
-31° F for 10 seconds after engine had been running for 4 minutes. |
24 |
Engine speed was between 2200 and 4400 RPM and transmission was not
in park or neutral and TPS was less than 2% for 3 seconds. |
25 |
Manifold air temperature sensor signal showed an air temperature
over 293° F for 3 seconds when vehicle speed was greater than 3 MPH and engine had been
running for 8 minutes. |
26 |
Quad-driver sense voltage showed a low voltage when battery voltage
should be present, or the sense voltage showed battery voltage when a low voltage should
be present. |
32 |
The ECM opens each EGR control valve during deceleration and
monitors the change in manifold vacuum. The code sets when the change in manifold vacuum
is outside the normal range. |
33 |
MAP sensor voltage was too high for 4.8 seconds when throttle angle
was less than 2%. |
34 |
MAP sensor voltage was too low for 1 second when engine speed was
under 600 RPM, or MAP sensor voltage was too low for 1 second when engine speed was over
600 RPM and throttle angle was above 20%. |
41 |
Faulty or incorrect MEM-CAL. |
43 |
Knock sensor signal was either above 3.5 volts or below 1.5 volts
for at least 0.5 seconds. |
44 |
Oxygen sensor voltage was under 0.2 volts for at least 60 seconds of
closed loop operation. |
45 |
Oxygen sensor voltage was over 0.7 volts for 50 seconds in closed
loop operation with a throttle angle between 3% and 45%. |
51 |
MEM-CAL error. |
52 |
CALPAK error. |
53 |
ECM sees a battery voltage of more than 17.1 volts for 2 seconds. |
54 |
Fuel pump voltage was less than 4 volts for 0.4 seconds. |
62 |
Vehicle gear commanded by ECM did not match actual gear selected. |
66 |
A/C pressure sensor voltage was either above 4.9 volts or below 0.1
volts for at least 5 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. |