Fast 30400-KIT-EZ-EF, Инструкция по эксплуатации

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O2 Sensor
Wideband oxygen sensor unable to initialize, disconnected or
malfunctioning
TPS Voltage Throttle Position Sensor signal voltage too high or too low
Troubleshooting O2, IAC, Fuel Pressure Sensor, MAP, TPS, ATS and CTS Faults
1. Verify that the offending sensor is installed and connected to the wiring harness.
2. With the ECU keyed-on, use the hand-held to look for a valid reading from the offending
sensor. For IAC, watch for a changing reading with the engine idling.
3. Verify that the wiring harness itself is not damaged. Visually inspect the wiring harness from
the sensor back to the ECU looking for cut, pinched, abraded or melted sections. Using a
multi-meter, check continuity from the sensor connector back to the ECU. Also make sure no
pins in a particular sensor connector are shorted to each other.
4. For the wideband oxygen sensor, also check to see if the sensor tip gets hot (check carefully!)
with the ECU keyed-on.
5. If no other problems can be found, try replacing the sensor.
Troubleshooting Battery Voltage Fault
1. Verify that the battery and charging system are in good condition.
2. Verify solid, corrosion-free connections at the battery and switched ignition source.
3. Verify that the wiring harness itself is not damaged. Visually inspect the wiring harness
looking for cut, pinched, abraded or melted sections.
Troubleshooting Fuel Pressure Control Fault (in Return Fuel System Mode)
1. Verify that a mechanical fuel pressure regulator and return line are installed.
2. Verify that the regulator is not set above 75 psi.
3. Verify that the return line is not restricted. If using an existing factory fuel tank fitting to feed
fuel back into the tank, make sure it does not have a check valve preventing flow into the
tank.
4. Check for a Fuel Pressure Sensor fault. If there is an issue with the sensor or its wiring that is
causing the fuel pressure reading to be artificially maxed out at 99 psi, that will disable the
pump. (
NOTE: A Fuel Pressure Sensor fault resulting in a false 0 psi reading or caused by
the fuel pressure sensor being disconnected from the harness will not disable the pump.)
Troubleshooting Fuel Pressure Control Fault (in Returnless Fuel System Mode)
1. Verify that the fuel pump relay harness is connected to the main harness and to the pump.
2. Verify that the fuel pump is solidly wired to ground.
3. Verify that the fuel pressure sensor is installed and connected to the main harness.
4. To test items 1-3 plus the pump and the relay, BRIEFLY connect the green “FUEL PUMP
RELAY” wire in the 1-way Weather-Pack connector to ground. This should cause the pump
to run – which can sometimes be heard. A change in the fuel pressure reading in the hand-
held’s Live Dashes is further evidence that the pump ran.
5. Verify that the fuel pump fuse in the main harness is installed and in good condition.