E8E Checking the Warm-Up Period

E8E Checking the warm-up period

Tools:
- Multimeter
- CO meter
- Tachometer

1 Connect the tachometer, CO meter and exhaust extraction equipment.

2 Start the engine.

3 Pull up the rubber dust excluder on the connector of one of the injectors.




4 Connect the multimeter test prods to the injector connector pins.

Note: Polarity: Red test prod (+) to the blue/red (BL/RD) lead and black test prod (-) to the green/red /GR/RD) lead.

5 Check engine speed during the warm-up period. It should decrease as the engine warms up.

6 Measure the voltage across the injectors and compare the readings with the data in the table.

Engine temperature Voltage
0°C (32°F) 1 V
20°C (68°F) 0.6 V
80°C (176°F) 0.3 V

If the readings obtained are incorrect, check the CO setting (see E7C) and temperature sensor (see E4). Also check the hot wire (filament) burnoff function (see E7B).

If these are OK, try another control module.

7 Check the CO content and adjust as necessary as described in E7C.