7-7
STEP 5
1. Ignition on.
2. Momentarily place screwdriver across
black/white and green connector pins.
Since the ignition module ignores the first
four sensor inputs, repeat this step six to
ten times.
3. Strong evidence of spark at spark plug
when screwdriver is removed. If there is a
spark, sensor is suspect. Install known,
good sensor and test again.
BA
C
IF NO SPARK
Check module resistance. See
IGNITION RESISTANCE TEST-
IGNITION MODULE. Replace mod-
ule if resistance is bad.
b0044a7x
A. Red from module
B. Green
C. Black/white pin
1. Check battery connections. Disconnect
module ground (scrape paint, add star
washer).
2. Disconnect white wire at coil terminal
(not module feed).
3. Connect 16 ga. jumper wire from battery
positive terminal to white wire.
4. Operate vehicle to see if problem is
eliminated.
NOTE
Vehicle no longer has an engine stop switch.
Engine must be stopped by removing jumper
wire.
PROBLEM NOT ELIMINATED
Problem is vibration, possibly loose
connections at safety switches or
defective ignition relay in starter
circuit.
b0224x7x
Intermittent Ignition Problem–Vibration
Sensor
IF ENGINE KILLS
Problem is temperature sensitive
sensor or module. Replace sensor
or module.
d0018x8x
Intermittent Ignition Problem–Temperature
1. Remove outer timing cover.
2. Remove inner timing cover and gasket.
3. Start engine.
4. Spray sensor plate with refrigerant (obtain-
able at electronic supply houses) to see if
engine kills.
5. With engine hot, at operating temperature
and cover off, apply heat (blow dryer) to
nose of sensor and see if engine kills.
6. Apply heat (blow dryer) to module and see if
engine kills.
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