AD07.51-S-5000A | Fuel injection and ignition system (HFM-SFI) diagnosis troubleshooting | 9.6.97 |
ENGINE 104.900 in MODEL 638
Fuel injection and ignition system (HFM-SFI) diagnosis, advanced information | |||
Fuel injection and ignition system (HFM-SFI), testing electrical system | |||
Troubleshooting | |||
Complaint | Possible cause | Notes | Remedy/Test step |
Engine difficult to start and has poor acceleration | Engine coolant temperature sensor, fuel injection valves, actuation and injection time | ||
Engine does not start | Control module voltage supply Crankshaft position sensor Fuel pump relay Fuel injection valves, actuation and injection time Ignition coil rpm sensor CAN data bus Fuel pump Malfunction in the radio frequency remote control with immobilizer Radio frequency remote control with immobilizer not correctly unlocked | ||
Engine idles unevenly | O2 sensor Idle speed control actuator Fuel injection valves, actuation and injection time Fuel injection valves, leaktightness and spray pattern Fuel pressure | ||
Engine idles unevenly when A/C compressor cuts in (A/C compressor signal on vehicles fitted with climate control as standard) | A/C compressor - no signal when A/C compressor cuts in Mechanical end stop of closed throttle valve not recognized. | ||
Engine idles unevenly when consumers are switched on | Idle speed control actuator Mechanical end stop of closed throttle valve not recognized. | ||
Oil pressure warning lamp in instrument cluster comes on | Oil pressure switch Warning lamp Oil pressure outside the limit values |
Referenced documents
- ad0751s2000a Fuel injection and ignition system (HFM-SFI) diagnosis, advanced information
- ad0751s600001a Engine control module (HFM-SFI), terminal 30, testing electrical system of fuel injection system (HFM-SFI)
- ad0751s600006a Fuel pump relay Checking electrical components for the HFM gasoline injection system
- ad0751s600009a ECT sensor, testing electrical system of fuel injection system (HFM-SFI)
- ad0751s600013a O2S signal, testing electrical system of fuel injection system (HFM-SFI)
- ad0751s600014a O2S heater, testing electrical system of fuel injection system (HFM-SFI)
- ad0751s600031a A/C compressor cut-in signal, testing electrical system of fuel injection system (HFM-SFI)
- ad0751s600041a CAN data bus, testing electrical system of fuel injection system (HFM-SFI)
- ad0751s600041b CAN data bus, testing electrical system of fuel injection system (HFM-SFI)
- ad0751s600054a Throttle valve actuator, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600056a Drive throttle valve potentiometer, testing electrical system of fuel injection and ignition system (HFM)
- ad0751s600062a Control module, voltage supply, terminal 15, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600063a Throttle valve actuator potentiometer, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600064a Idle speed switch, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600065a Injection valve 1, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600066a Injection valve 2, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600067a Injection valve 3, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600068a Injection valve 4, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600069a Injection valve 5, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600070a Injection valve 6, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600075a Speed sensor, testing electrical system of fuel injection and ignition system (HFM-SFI)
- ad0751s600081a HFM-SFI fuel injection system test of electrical system low pressure oil pressure switch
- ad0751s600082a HFM-SFI fuel injection system test of electrical system high pressure oil pressure switch
- ad0751s600083a HFM-SFI fuel injection system test of electrical system oil pressure indictor lamp
- ad0751s6000a Fuel injection system (HFM-SFI), testing electrical system
- ad0751s600106a Crankshaft position sensor Checking electrical components for the HFM ignition system
- ad0751s600120a HFM-SFI test of electrical system ignition system ignition coil
- ad0751s700001a Fuel pressure at idle, testing hydraulics, fuel pressures and for internal leaks (HFM-SFI)