Complete System Test (CIS-E)

The entire fuel injection electrical system can be tested from the disconnected control unit plug.
- Before disconnecting multi-point connector of control unit check:
Ground connection on cold start valve Resistance value of differential pressure regulator
Potentiometer resistance values
Temperature sensor resistance value
- Disconnect multi-point connector from control unit. Wiring connectors on all electrical components must be connected.

CAUTION: Disconnect and connect control unit multi-point connector only with ignition off.

- Perform electrical tests in order shown on troubleshooting procedure sheet using test leads with flat ends only! Anything else could damage the multi-point connections

Test leads can be made locally using the following materials:
1. 2 flat male plugs N 17.457.2
2. 2 super flexible leads, each approx. 60 cm long
3. 2 insulated alligator clips








ALL VEHICLES





ADDITIONAL TESTS FOR ALL ENGINES EXCEPT 1984 4 CYLINDER