Lancer L4-2.0L (4B11) (2008)
EGR Valve: Oscilloscope Patterns and Waveforms
EGR VALVE (STEPPER MOTOR)
Required Special Tools:
-
MB991658: Test Harness
-
MB992110: Power Plant ECU Check Harness
Measurement Method
1. Disconnect the EGR valve connector, and connect the test harness special tool (MB991658) between the separated connector (All terminals should
be connected).
2. Connect the oscilloscope probe to the EGR valve connector terminal No. 1, terminal No. 3, terminal No. 4, terminal No. 6 respectively.
Alternate method
1. Disconnect all ECM connectors. Connect the check harness special tool (MB992110 between the separated connectors.
2. Connect the oscilloscope probe to check harness terminal No. 31, No. 32, No. 47 and No. 48.