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Home >> Land Rover >> 1993 >> Defender 110 (LD) V8-3.9L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Testing and Inspection >> Component Tests and General Diagnostics >> Constant Energy Ignition System >> Test 2
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Test 2


TEST 2: L.T. VOLTAGE





- Switch the ignition ON. Engine is stationary.

(a) Connect voltmeter to points in the circuit indicated by V1 to V4 and make a note of the voltage readings.
(b) Compare voltages obtained with the specified values listed below:

Expected Readings

V1 More than 12 volts.
V2 1 volt maximum below volts at V1.
V3 1 volt maximum below volts at V1.
V4 0 volt - 0.1 volt.

(c) If all readings are correct, proceed to Test 3. Test 3
(d) Check incorrect reading(s) with chart to identify area of possible faults, i.e. faults listed under heading SUSPECT and rectify.
(e) If coil and amplifier is suspected, disconnect L.T. lead at coil, repeat V3. If voltage is still incorrect, fit new coil. If voltage is now correct, check L.T. lead, if satisfactory fit new amplifier.
(f) If engine will not start proceed to Test 3. Test 3





KEY
* = Expected Voltage
H = Voltage higher than expected
L = Voltage lower than expected
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