Inspect The Power Supply Of The Sensor - Hino Motors HINO 155 series Workshop Manual

4

Inspect the power supply of the sensor

E2 VC
Do the measurements meet the standard value?
Go to step 5.
5
Inspect for short-circuit of the differential pressure sensor harness
V46
B
V71
Do the measurements meet the standard value?
Go to step 6.
ENGINE (J05E)/TROUBLESHOOTING
1. Set the starter key to the "ON" position.
2. Use the electrical tester to measure the voltage between the termi-
nals of the differential pressure sensor vehicle side connector.
Starter key: ON
SHTS021270300687
YES
1. Set the starter key to the "LOCK" position.
2. Connect the signal check harness to the engine ECU vehicle side
V70
harness. (Do not connect the harness to the ECU.)
3. Use the electrical tester to measure the resistance between the
terminals of the engine ECU (signal check harness) and ground.
SHTS021270300688
Starter key: LOCK
YES
Measurement Tester
conditions connections
Differential pres-
sure sensor vehi-
cle side connector
VC – E2
Go to step 7.
Measurement Tester
conditions connections
Engine ECU (sig-
nal check har-
ness)
VCP1 (V71) –
Ground
PEX (V70) –
Ground
EP1 (V46) –
Ground
Repair or replace the harness.
Perform "After-inspection work" of INFOR-
MATION section.
2–759
Standard values
4.5 – 5.5 V
NO
Standard values
 
NO