PP. Rex #20

PP. REX #20

REX#20 Rex ECU ground missing



Conditions for fault message:
Fault message if the signal is above 1.2 Volts.

Cause of fault:
Breakage between Rex #20 and chassis connection; also, the Rex-I control unit is not screwed firmly to the body.

Fault symptoms:
Engine does not start.
For intermittent faults, the engine dies or experiences significant drop in engine speed.

PP1

Checking the attachment

Check that the control unit is properly attached.
^ Continue with Disconnection of the Volvo System Tester PP2.

PP2

Disconnection of the Volvo System Tester
- Disconnect the System Tester according to P1. P1. Connection of Volvo System Tester
^ Continue with Connection of measurement box PP3.

PP3




Connection of measurement box
Connect the measurement box to Rex-I and check the chassis connections according to N3-N4. N. Measurement Box, Signal Description
^ Continue with Checking of chassis connection PP4.

PP4

Checking of chassis connection
If the value is OK at the inspection of the chassis connection:
intermittent fault.
^ Check the chassis connection and connectors for loose connection according to CD. CD. Checking of Wiring