E8D Checking the Full-Load Enrichment Function (w/o Cat )

E8D Checking the full-load enrichment function (not cars with catalytic converter)

Tools:
- CO meter
- Multimeter

1 Connect the CO meter and exhaust extraction equipment.

2 Start the engine and warm it up.

3 Peel back the rubber dust excluder on the connector of one of the injectors.




Unplug the throttle position sensor connector and pull up the rubber dust excluder. Connect a jumper lead to pins 3 and 18 of the throttle position sensor connector.

4 Check whether the CO content rises by about 1%. If it does not, connector the multimeter test prods to the injector connecting pins.

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

Check whether the voltage rises by about 0.1 V.

5 If it does not, check the leads running to the control module. See section E5 "Checking the throttle position sensor". If these leads are OK, try another control module.

6 Check and adjust the CO content as described in section E7C.