ER4 oil level sensor signal missing
â–¶ How to fix
Switch off the ignition; Disconnect electronics; Connect socket box between TCU and transmission; Switch on the ignition; Measure the voltage between pin 18 (VGM2) and pin 13 (AU3), nominal value: 8 V; Switch off the ignition; Disconnect electronics; Measure the resistance between pin 13 (AU3) and ground, nominal value: > 10 Mohm; Measure the resistance between pin 7 (ER4) and ground, nominal value: > 10 Mohm; In case of deviations from the nominal value, check the wiring, the component and the TCU;
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
Software / TCU - input wiring; Normal mode
Possible cause
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