4-9
TRBL
SHTG
Troubleshooting
Trouble code and checking step
The descriptions enclosed by < > are applicable to the twin and triple engine installations.
— : Not applicable
Trouble
code
Item Condition
LAN gauge
display
Symptom Remarks Checking steps See page
13 Pulser coil
malfunction
Irregular signal C/E Degraded acceleration performance
Declining maximum engine speed
Ignition timing
is set to BTDC
10° and VCT
assemblies are
set to the
maximum
retard angle
Measure the pulser coil air gap. 7-1
Measure the pulser coil output
peak voltage.
5-55
Measure the pulser coil
resistance.
5-55
Check for continuity between
the pulser coil and the engine
ECM.
5-55
A-7
Check the protrusions on the
flywheel magnet for damage.
7-15
15 Engine temp
sensor
malfunction
Out of
specification
C/E High engine idle speed
Engine is difficult to start when cold
<Difference in engine idle speeds>
—
Measure the engine
temperature sensor input
voltage.
5-59
Measure the engine
temperature sensor resistance.
5-59
Check for continuity between
the engine temperature sensor
and the engine ECM.
5-59
A-7
17 Knock sensor
malfunction
Irregular signal C/E Degraded acceleration performance
Declining maximum engine speed
Ignition timing
is set to the
maximum
retard angle
Measure the knock sensor
resistance.
5-64
Check for continuity between
the knock sensor and the engine
ECM.
5-64
A-7
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