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ECM Harness Connector EN01
1
2
Cylinder No.2 Fuel Injector Harness
Connector EN12
FE02-5062b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.2 fuel injector wiring harness
connector EN12.
(c)
Disconnect ECM harness connector EN01.
(d)
Measure resistance between cylinder No.2 fuel injector
wiring harness connector EN12 terminal No.1 and ECM
harness connector terminal No.63. Check whether the circuit
is open. If there is no open circuit, repair the faulty part.
(e)
Measure resistance between cylinder No.2 fuel injector
wiring harness connector EN12 terminal No.1 and a reliable
ground. Check whether the circuit is short to ground. If there
is no short circuit, repair the faulty part.
(f)
Measure voltage between cylinder No.2 fuel injector wiring
harness connector EN12 terminal No.1 and a reliable ground.
Check whether the circuit is short to power supply. If there is
no short circuit, repair the faulty part.
Test Items
Standard
Value
Resistance Between EN12 (1) and EN01 (63)
Less than 1 Ω
Resistance Between EN12 (1) and a Reliable
Ground
10 kΩ or higher
Voltage Between EN12 (1) and a Reliable
Ground
0 V
Execute next step as per normal.
Next
Step 7
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 8
Replace ECM.
Next
Step 9
Use scan tool to confirm whether the DTC code is stored again.
(a)
Connect scan tool to the datalink connector.
(b)
Turn the ignition switch to "ON" position.
(c)
Clear DTC code.
(d)
Start and run the engine at idle speed to warm up the engine
for at least 5 min.
(e)
Road test the vehicle for at least 10 min.
(f)
Read control system DTC code again to confirm that the
system has no DTC code.
2-134
Control System JL4G18-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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