| 93 5.7L VIN 7 TBI | |
|---|---|
| 13 | Oxygen sensor voltage stays between 0.35 and 0.55 volts for 60 seconds. |
| 14 | Coolant temperature sensor signal indicates a temperature of over 275° F for 2 seconds. |
| 15 | Coolant temperature sensor signal indicates a temperature colder than -27° F for 30 seconds after the engine has been running for at least 30 seconds. |
| 21 | TPS sensor voltage was above 2.5 volts for 8 seconds when the MAP sensor signal showed manifold vacuum to be 15 pounds or more. |
| 22 | TPS voltage was under 0.2 volts when the engine was running. |
| 23 | Inlet air temperature sensor signal showed an air temperature below -22° F after the engine has been running for 5 minutes. On Fleetwood the inlet air temperature signal shows a temperature below -20° F for 5 seconds at a speed less than 44 MPH. |
| 24 | When engine speed was between 1200 and 4400 RPM and throttle position angle was less than 3%, the MAP signal showed low voltage (high manifold vacuum) for at least 5 seconds. |
| 25 | Inlet air temperature sensor signal showed an air temperature over 302° F after the engine has been running for 5 minutes. On Fleetwood the inlet air temperature signal shows a temperature above 297° F for 5 seconds at a speed less than 44 MPH. |
| 26 | Quad-Driver sense voltage shows a low voltage for 5 seconds where battery voltage should be present, or the sense voltage shows battery voltage for 25 seconds when a low voltage should be present. (Fleetwood only) |
| 32 | EGR open command did not change MAP sensor signal. Normal EGR flow should cause slight decrease in manifold vacuum which would change MAP sensor signal. |
| 33 | MAP sensor signal voltage was too high (low vacuum) for 5 seconds when throttle opening was under 4%. |
| 34 | MAP sensor signal voltage was too low (high vacuum) when engine speed was over 1200 RPM. On Fleetwood the engine speed was over 1000 RPM with a throttle position angle above 21%. |
| 41 | The EST signal was present when the circuit should have been grounded by the ignition module when it received bypass voltage under 1 volt. (Fleetwood only) |
| 42 | The EST signal did not change when the ECM applied bypass voltage to the ignition module. |
| 43 | The ECM did not detect a knock signal during near wide open throttle operation with coolant temperature above 194° F or the knock signal was present for 4 seconds or more during normal engine operation. |
| 44 | Oxygen sensor voltage was under 0.25 volts for 50 seconds of closed loop operation. On Fleetwood the engine speed was over 1000 RPM with a throttle position angle above 21%. |
| 45 | Oxygen sensor voltage was over 0.75 volts for 30 seconds with a throttle angle greater than 20%. On Fleetwood the oxygen sensor voltage was 0.75 volts for 30 seconds in a closed loop with a throttle angle either greater than 20% or less than 2%. |
| 46 | Anti-Theft Pass Key signal was wrong when ignition was turned to start position. |
| 51 | PROM error. |
| 54 | Fuel pump voltage was not present at fuel pump sense line for 2 seconds after the ECM has sent the fuel pump on command. |
| 55 | ECM error. Replace ECM. (Except Fleetwood). |