ENGINE (J05E)/TROUBLESHOOTING 2–239
1. Set the starter key to the "LOCK" position.
2. Connect the signal check harness to the engine ECU vehicle side
harness. (Do not connect harness to the ECU.)
3. Use the electrical tester to measure the resistance between each
terminal in the engine ECU (signal check harness) and ground.
1. Connect the engine coolant temperature sensor 1 connector.
2. Use the electrical tester to measure the resistance between the
terminals of the engine ECU (signal check harness).
5
Check for short-circuit in wire harness of engine coolant temperature sensor 1
Measurement
conditions
Tester
connections
Standard values
Starter key: LOCK
Engine ECU (sig-
nal check har-
ness)
THW (E66) –
Ground
E5 (E58) – Ground
Do the measurements meet the standard value?
Go to step 6. Repair or replace the harness.
Perform "After-inspection work" of INFOR-
MATION section.
6
Check for disconnection in wire harness of engine coolant temperature sensor 1
Measurement
conditions
Tester
connections
Standard values
Starter key: LOCK
Engine ECU (sig-
nal check har-
ness)
THW (E66) –
E5 (E58)
20 C {68 F}:
2.59 – 2.32 k
80 C {176 F}:
0.326 – 0.310 k
Do the measurements meet the standard value?
Go to step 7. Repair or replace the harness.
Perform "After-inspection work" of INFOR-
MATION section.
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