GH. Cold-Starting Problems

GH. Cold-starting problems

Pre-conditions for troubleshooting
All fault codes have been dealt with. The engine is cold (<25°C 77°F)).
The fault is not intermittent (See GJ. Intermittent starting problems). GJ. Intermittent starting problems

GH1




Checking the idle switch
- Ignition on.
- Activate mode 2 and check the idle switch according to D. Troubleshooting via the diagnostic socket. Bendix System [Regina/Rex-I]
The diagnostic system should respond with code 3-3-2 when the throttle is rotated and the idle switch is released.

The diode flashes rapidly.
^ GF. Checking the throttle switch.

The diagnostic system responds with code 3-3-2:
^ Injection pulses GH2.

GH2




Injection pulses
Connect a voltmeter between 1 and 2 on one of the injectors.
- Operate the starter motor.
The voltmeter should show 400-900 mV.

If the value is OK:
^ Checking of spark plugs GG4.

If the value differs:
^ Checking of engine temperature sensor GG3.

GH3




Checking the engine temperature sensor
Troubleshoot according to EG. Fault code 1-2-3 Engine temp. sensor signal absent or faulty. DTC 1-2-3

If no fault is found:
^ Return to A. Troubleshooting Layout. A. Troubleshooting Layout

GH4




Checking of spark plugs
- Remove all the spark plugs.
Check that none of the spark plugs are worn.

If the spark plugs are OK:
^ Checking the fuel pressure and residual pressure GH5.

If the spark plugs are worn:
^ Replace all the plugs.

GH5




Checking the fuel pressure and residual pressure
Check the fuel pressure and residual pressure according to S. Fuel pressure and residual pressure. S. Fuel Pressure and Residual Pressure

If the fuel and residual pressure are OK:
^ Return to A. Troubleshooting Layout. A. Troubleshooting Layout