Montero V6-3.8L SOHC (2005)
EGR Valve: Testing and Inspection
EGR Valve (Stepper Motor) Check
EGR VALVE (STEPPER MOTOR) CHECK
Required Special Tool:
-
MB991658: Test Harness Set
Checking the Operation Sound
1. Check that the operation sound of the stepper motor can be heard from the EGR valve when the ignition switch is turned ON (without starting the
engine).
2. If the operation sound cannot be heard, inspect the drive circuit of the stepper motor.
NOTE: If the circuit is normal, either the stepper motor or the engine A/T-ECU may have failed.
Checking the Coil Resistance
1. Remove the EGR valve.
2. Measure the resistance between terminal 2 and either terminal 1 or terminal 3 of the connector at the EGR valve.
Standard value: 10 - 20 Ohms [at 20 °C (68 °F)]
3. If the resistance is not within the standards, replace the EGR valve.
4. Measure the resistance between terminal 5 and either terminal 6 or terminal 4 of the connector at the i EGR valve.
Standard value: 10 - 20 Ohms [at 20 °C (68 °F)]
5. If the resistance is not within the standards, replace the EGR valve.
<Operation Check>
1. Remove the EGR valve.
2. Connect special tool MB991658 to the EGR valve.