Isuzu N-Series. Manual — part 468
6E-208 EMISSION AND ELECTRICAL DIAGNOSIS
Working Check
Apply powervoltage between the terminals, there
is no problem if the negative pressure does not rise
when applied to the input port.
Caution:
When measuring resistance with a circuit tester, be
careful not to damage or deform the terminals.
3. Exhaust Gas Recirculation (EGR) Valve
With negative pressure applied to the diaphragm
chamber, make sure that the valve is smoothly ac-
tuated to make the area between (1) and (2) venti-
lated.
Startup: About -13.3
± 2.7 kPa (-100 ± 20 mmHg /
-1.93
± 0.39 psi)
Check to see if EGR valve is normally actuated un-
der the following conditions:
Engine coolant temp.: 80
°C (176°F) or higher
N6A1266E
N6A1362E
EMISSION AND ELECTRICAL DIAGNOSIS 6E-209
SPECIAL TOOLS
Illustration
Tool Number /
Description / Remarks
5-8840-0366-0 (J 39200)
/ High Impedance Multi-
meter (Digital Voltmeter-
DVM)
5-8840-0279-0 (J 23738-
A) / Vacuum Pump with
Gauge
5884003660
5884002790
6E-210 EMISSION AND ELECTRICAL DIAGNOSIS
EXHAUST 6F-1
ENGINE 4H SERIES
SECTION 6F
EXHAUST
Caution:
Exhaust system components must have enough clearance from the underbody to prevent overheating of the floor
pan and possible damage to the passenger compartment, insulation and trim materials.
Contents
GENERAL DESCRIPTION . . . . . . . . ... 6F-2
Component . . . . . . . . . . . . . . 6F-2
Gasket . . . . . . . . . . . . . . . ... 6F-2
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