Isuzu 4ja1 - Inspection

EXHAUST SYSTEM 6F – 11
INSPECTION
4JA1T(L)
Vacuum switch valve (VSV)
Use a circuit tester to measure the V.S.V. resistance.
V.S.V Resistance Ω at 20°C
37 ~ 44
If the resistance is not within specification, replace it.
EGR Valve
Apply vacuum to the EGR valve, check to see the valve
operation.
Negative Pressure
4JA1TC/4JH1TC
RTW46ESH000301
EVRV
Use a circuit tester to measure the EVRV resistance.
EVRV Resistance Ω at 20°C
14
If the resistance is not within specification, replace it.
EGR Valve
Apply vacuum to the EGR valve, check to see the valve
operation.
Negative Pressure 4JH1TC
Less than 250 mmHg Not operation
More than 300 mmHg Operation
Negative Pressure 4JA1TC
Less than 100 mmHg Not operation
More than 170 mmHg Operation
Less then 180 mmHg Not operation
More than 240 mmHg Operation