landrover Workshop Repair Guides

Land Rover Workshop Service and Repair Manuals

LUCAS CONSTANT ENERGY IGNITION SYSTEM - V8i|Page 1182 > < LUCAS CONSTANT ENERGY IGNITION SYSTEM - V8i
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ELECTRICAL

3

FAULT DIAGNOSIS

1

2

3

4

SUSPECT

L

*

*

*

DISCHARGED BATTERY

*

L

L

*

IGN. SWITCH AND/OR
WIRING

*

*

L

*

COIL OR AMPLIFIER

*

*

*

H

AMPLIFIER GROUND

Key

Expected Voltage

Voltage higher than expected

Voltage lower than expected

TEST 3:

Amplifier Switching

Connect voltmeter between battery positive (+ve)
terminal and H.T. coil negative (-ve) terminal.
Voltmeter should register 0 volts.

Switch ignition ’On’, voltmeter should still register 0
volts.

Crank engine, voltmeter reading should increase
when cranking, in which case proceed to Test 5.

If no increase in voltage during cranking proceed to
Test 4.

LUCAS CONSTANT ENERGY IGNITION SYSTEM - V8i|Page 1182 > < LUCAS CONSTANT ENERGY IGNITION SYSTEM - V8i