| 92-93 5.7L VIN P |
|---|
| 13 | Oxygen sensor voltage stays between 0.35 and 0.55 volts for 60 seconds.
Engine was at normal operating temperature and had been running for
at least 2 minutes after start with a throttle angle above 5%. |
| 14 | Coolant temperature sensor signal indicates a temperature of over
266° F. |
| 15 | Coolant temperature sensor signal indicates a temperature colder than
-56° F. |
| 16 | A low resolution pulse was not detected by ECM within 720 high resolution
timing pulses. |
| 21 | TPS voltage was above 2.5 volts for 3 seconds when the engine was
running, or when the TPS was above 4.8 volts at any time. |
| 22 | TPS voltage was under 0.23 volts when the engine was running. |
| 23 | Inlet air temperature sensor signal showed an air temperature below
-31° F for 60 seconds after the engine has been running for 4 minutes. |
| 24 | Vehicle speed was 0 MPH when engine speed was between 900 and 3000
RPM and throttle position angle was less than 2% for 5 seconds. |
| 25 | Inlet air temperature sensor signal showed an air temperature over
302° F for 12 seconds after the engine has been running for 4 minutes. |
| 26 | ECM detected the wrong potential voltage at the #1 quad-driver module
circuit for 20 seconds. |
| 27 | ECM detected the wrong potential voltage at the #2 quad-driver module
circuit for 3 seconds. |
| 28 | ECM detected the wrong potential voltage at the #3 quad-driver module
circuit for 3 seconds. |
| 32 | EGR open command did not change the fuel mixture when the command
was given during off idle operation. EGR opening should cause the mixture
to be slightly richer because of the low oxygen content of the exhaust
gas. |
| 33 | MAP sensor signal voltage was too high (low vacuum) for 1 second when
throttle opening was under 3% and engine speed was above 500 RPM. |
| 34 | MAP sensor signal voltage was too low (high vacuum) when engine speed
was under 700 RPM, or when TPS was greater than 20% with an engine speed
above 700 RPM. |
| 36 | ECM detected less than 60 high resolution timing pulses between each
low resolution pulse for 5 consecutive cycles. |
| 41 | EST circuit voltage was above 4.6 volts when engine speed was under
1500 RPM. |
| 42 | The EST circuit voltage was below 0.5 volts when engine speed was
below 3000 RPM. |
| 43 | One or both of the knock sensors were either open or grounded for
5 seconds. |
| 44 | Left oxygen sensor voltage was under 0.2 volts for 50 seconds of closed
loop operation. |
| 45 | Left oxygen sensor voltage was over 0.7 volts for 50 seconds when
the throttle angle was above 4% during closed loop operation. |
| 51 | PROM error. |
| 52 | Engine oil temperature was below -31° F after engine had been running
for 30 minutes. |
| 53 | ECM detected a battery voltage either above 17.1 volts or below 8
volts. |
| 55 | ECM detected a lean oxygen sensor voltage for 3 seconds during the
power enrichment modes of operation. |
| 62 | Engine oil temperature sensor indicated an oil temperature above 284°
F after engine had been running for 30 minutes. |
| 63 | Right oxygen sensor was open showing a steady voltage between 0.35
and 0.55 volts for 60 seconds after the engine had been running for
at least 2 minutes. |
| 64 | Right oxygen sensor voltage was below 0.2 volts for 50 seconds of
closed loop operation. |
| 65 | Right oxygen sensor voltage was above 0.7 volts for 50 seconds of
closed loop operation when the throttle angle was above 4%. |
| 66 | A/C pressure sensor circuit was either open or shorted showing a voltage
below 0.12 volts or above 4.86 volts for 10 seconds. |
| 67 | ECM did not detect an A/C system pressure change of more than 9 psi
when A/C clutch was engaged. |
| 68 | ECM detects voltage on the A/C status line for more than 20 seconds
after ECM has disengaged the A/C relay. |
| 69 | ECM did not detect any voltage on A/C status line for 20 seconds after
ECM had commanded A/C ON. |
| 72 | 2nd or 3rd gear switch was open for 1.5 seconds when vehicle speed
was above 30 MPH with engine speed greater than 5000 RPM and a throttle
angle above 70%. |
In the case of the following codes:
26 ECM detected the wrong potential voltage at the #1 quad-driver module circuit for 20 seconds.
27 ECM detected the wrong potential voltage at the #2 quad-driver module circuit for 3 seconds.
28 ECM detected the wrong potential voltage at the #3 quad-driver module circuit for 3 seconds.
How does one find the quad-driver module specific assignments?
There are diagrams, but no reference to the quad assignments.
Thanks, John
1993 Corvette Engine P with 6 speed manual