Short-Circuit Of The Engine Coolant Temperature Sensor 1 Harness; Disconnection Of The Engine Coolant Temperature Sensor 1 Harness - Hino Motors HINO 155 series Workshop Manual

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5
Inspect for short-circuit of the engine coolant temperature sensor 1 harness
D
E66
E58
Do the measurements meet the standard value?
Go to step 6.
6
Inspect disconnection of the engine coolant temperature sensor 1 harness
D
E66
Do the measurements meet the standard value?
Go to step 7.
ENGINE (J05E)/TROUBLESHOOTING
1. Set the starter key to the "LOCK" position.
2. Connect the signal check harness to the engine ECU. (Do not con-
nect harness to the engine ECU.)
3. Use the electrical tester to measure the resistance between the
terminals of the engine ECU and ground.
SHTS021270300234
Starter key: LOCK
YES
1. Connect the engine coolant temperature sensor 1 connector.
2. Use the electrical tester to measure the resistance between the
E58
terminals of the engine ECU (signal check harness).
Starter key: LOCK
SHTS021270300235
YES
Measurement Tester
conditions connections
Engine ECU (sig-
nal check har-
ness)
THW (E66) –
Ground
E5 (E58) – Ground
Repair or replace the harness.
Perform "After-inspection work" of INFOR-
MATION section.
Measurement Tester
conditions connections
Engine ECU (sig-
nal check har-
ness)
THW (E66) –
E5 (E58)
Repair or replace the harness.
Perform "After-inspection work" of INFOR-
MATION section.
Standard values
 
NO
Standard values
20 C {68 F}:
2.59 – 2.32 k
80 C {176 F}:
0.326 – 0.310 k
NO