PE. Regina #9

PE. Regina #9

REGINA #9 Main relay power missing



Conditions for fault message:
Fault message stored if voltage is below 1.0 Volt.

Causes of fault:
Breakage in wire between Regina #9 and [1][2]system relay.
Breakage in wire between Regina #21 and [1][2]system relay.

Fault symptoms:
Engine does not start.
For intermittent fault, the engine dies or bucks considerably.

PE1

Disconnection of Volvo System Tester
- Disconnect the System Tester according to P1. P1. Connection of Volvo System Tester
^ Continue with Connection of measurement box PE2.

PE2




Connection of measurement box
Connect the measurement box to Regina and check the chassis connections according to N1-N2. N. Measurement Box, Signal Description
^ Continue with Checking of #21 PE3.

PE3




Checking of #21
- Connect control unit to measurement box.
- Insert fuse no.1.
- Ignition off.
Connect a voltmeter between #21 and #5.
The voltmeter should show battery voltage.

If the value differs:
Test [1][2]system relay #21 PE4.




- Ignition on.
The voltmeter should show approx. 0.8 V.

If both values are OK:
^ Checking #9 PE5.

If the values differ:
^ Test with a new control unit.

PE4




Testing of [1][2]system relay #21
- Test with a new [1][2]system relay.
- Repeat the previous measurement.

If the value is OK:
^ [1][2]System relay was defective.

If value still differs:
^ Check the wires between the control unit and battery via the [1][2]system relay for breakage according to CD. CD. Checking of Wiring

PE5




Checking #9
- Ignition on.
Connect a voltmeter between #9 and #5.
The voltmeter should show battery voltage.

If the value is OK:
Intermittent fault.
^ Check the connections to #21 and #9 for loose connection according to CD. CD. Checking of Wiring

If the value differs:
^ Test [1][2]system relay #9 PE6.

PE6




Test of [1][2]system relay #9
- Test with a new [1][2]system relay.
- Repeat the previous measurement.

If the value is OK:
^ [1][2]System relay was defective.

If the value still differs:
^ Check the wire between #9 and [1][2]system relay for breakage according to CD. CD. Checking of Wiring