HG. Problems Starting When Cold

HG. Problems Starting When Cold

Fault tracing conditions
All DTCs remedied. The engine is cold (<25°c = 77°F). The fault is not intermittent (See HH. Intermittent starting problems). HH. Intermittent Starting Problems

HG1




Checking The Idle Switch
- Ignition on.
- Go into DTM 2 and check the idle switch in accordance with C. Fault tracing via the DLC. Bosch System [LH/EZK]
The OBD system should respond with code 3-3-2 when the throttle is turned and the idle switch disengages.

The LED flashes rapidly
^ WC. Adjusting TP switch. WC. Adjusting the TP Switch

The OBD system responds with code 3-3-2:
^ Injector pulses HG2.

HG2




Injector Pulses
Connect a voltmeter between terminals 1 and 2 on one of the injectors.
- Operate the starter motor.
The voltmeter should read 400-900 mV

If this value is OK
^ Check the spark plug HG4.

If the reading is incorrect
^ Check the ECT sensor HG3.

HG3




Checking The Engine Coolant Temperature (ECT) Sensor
Carry out fault tracing in accordance with ED. DTC 1-2-3 Engine temperature sensor signal absent or faulty. DTC 1-2-3

If no fault is found
^ Return to A. How fault tracing is carried out. A. Fault Tracing Chart

HG4




Checking The Spark Plugs
- Remove all spark plugs.
Check that none of the spark plugs are worn and that the correct type spark plug is being used.

If the spark plugs are OK
^ Check the fuel pressure and residual pressure HG5.

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

HG5




Checking The Fuel Pressure And Residual Pressure
Check the fuel pressure and residual pressure in accordance with X. Fuel Pressure and Residual Pressure. X. Fuel Pressure and Residual Pressure

If fuel pressure and residual pressure are OK
^ Return to A. How fault tracing is carried out. A. Fault Tracing Chart