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ECM Harness Connector EN01
Crankshaft Position Sensor Harness
Connector EN26
1
2
3
FE02-5081b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the crankshaft position sensor wiring harness
connector EN26.
(c)
Disconnect ECM harness connector EN01.
(d)
Measure resistance between crankshaft position sensor
wiring harness connector EN26 terminal No.2 and ECM
harness connector EN01 terminal No.46. Check whether the
circuit is open.
(e)
Measure resistance between crankshaft position sensor
wiring harness connector EN26 terminal No.2 and a reliable
ground. Check whether the circuit is short to ground.
(f)
Measure resistance between crankshaft position sensor
wiring harness connector EN26 terminal No.2 and power
supply. Check whether the circuit is short to power supply.
Test Items
Standard Value
Resistance Between EN26 (2) and
EN01 (46)
Less than 1 Ω
Resistance Between EN26 (2) and a
Reliable Ground
10 kΩ or higher
Voltage Between EN26 (2) and a
Reliable Ground
0 V
Are the values the specified values?
No
Repair the faulty part. Go to step 10
Yes
Step 7
Check sensor signal plate.
(a)
Check whether the sensor signal plate is damaged, missing
and so on.
(b)
Check whether the sensor signal plate is installed correctly.
No
Repair the faulty part. Go to step 10
Yes
Step 8
Check ECM power supply circuit.
(a)
Check whether ECM power supply circuit is normal.
(b)
Check whether ECM ground circuit is normal.
No
Repair the faulty part.
Yes
Step 9
Replace ECM.
2-156
Control System JL4G18-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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