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2-666
Control System JL4G15-D
Engine Coolant Temperature Sensor Harness
Connector EO23
1 2 3
ECM Harness Connector EO01
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Next
Step 7
Check ECM power supply circuit.
Yes
Step 8
Replace ECM.
Next
Use scan tool to confirm whether the DTC code is stored again.
Step 9
EC718/EC718RV EC715/EC715RV 10/2009
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FE02-5347b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the engine coolant temperature sensor wiring
harness connector EO23.
(c)
Disconnect ECM harness connector EO01.
(d)
Measure resistance between engine coolant temperature
sensor wiring harness connector EO23 terminal No.3 and
ECM harness connector terminal No.29. Check whether the
circuit is open. Otherwise, repair the faulty part.
(e)
Measure voltage between engine coolant temperature
sensor wiring harness connector EO23 terminal No.3 and a
reliable ground. Check whether the circuit is short to power
supply. Otherwise, repair the faulty part.
Test Items
Resistance Between EO23 (3) and EO01
(29)
Voltage Between EO23 (3) and A Reliable
Ground
Execute next step as per normal.
(a)
Check whether ECM power supply circuit is normal.
(b)
Check whether ECM ground circuit is normal.
Repair the faulty part.
No
(a)
Replace ECM. Refer to
Replacement.
(b)
Carry out crankshaft position sensor self learn. Refer to
2.12.7.11 Crankshaft Position Sensor (CKP)
(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)
Read control system DTC code again to confirm that the
system has no DTC code.
Standard Value
Less than 1 Ω
0 V
2.2.8.8 Engine Control Module
Learn.
Engine
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