Test Program - EGR Circuit - No. 05 Engine Speed Sensor P74 (P65)

Test Program - EGR Circuit - No. 05 Engine Speed Sensor P74 (P65) Opel Frontera A

Checking Program - Electrical Circuit EGR

Test	Test Equipment	Test			Notes	Nominal
Step	Multimeter
MKM - 587 - A
of
between			Value
05	Frequency meter	Engine speed sensor P74 (P65)	K135, ter. 7	K135, ter. 8	· Engine idling	± 250 Hz
					· Engine at approx. 3500 rpm
· Measurement at wiring harness plug	± 1000 Hz
Troubleshooting:	Nominal Value:	Cause of Fault:

· Disconnect wiring harness connector from engine speed sensor P74 (P65)

· Measure resistance with multimeter

from: Control unit EGR K135, wiring harness plug ter. 7

to: Engine speed sensor P74 (P65), wiring harness plug ter. 2

approx. 0 W

· Line interrupted or short circuit to voltage

from: Control unit EGR K135, wiring harness plug ter. 7

to: Engine speed sensor P74 (P65), wiring harness plug ter. 2

· Measure resistance with multimeter

from: Control unit EGR K135, wiring harness plug ter. 7

to: Ground

> 200 kW

· Short circuit to ground

from: Control unit EGR K135, wiring harness plug ter. 7

to: Engine speed sensor P74 (P65), wiring harness plug ter. 2

· Measure resistance with multimeter