Component Inspection
■ ESP ECM waveform inspection
1.

IG key OFF.

2.

Place oscilloscope probe at terminal 3(CAN High) and terminal 11(CAN low) of 'DATA LINK CONNECTOR' (DLC).

3.

Disconnect only ESP ECM connector.

4.

IG key ON.

5.

Monitor the signal waveform.

■ ECM waveform inspection
6.

Disconnect only ECM connector.

7.

IG key ON.

8.

Monitor the signal waveform.

Reference signal waveform

☞ Different from "Signal Waveform & Data", if 1) both CAN HIGH and LOW signal are fixed at 2.5 V or 2) HIGH and LOW signal are fixed at 3.5 V and 1.5 V, respectively, it is due to communication error between modules.

9.

Is there any module which shows normal signal waveform with disconnecting connector or shows abnormal signal waveform with connecting connector ?

▶ Replace abnormal module and then, go to 'Verification of Vehicle Repair" procedure.

▶ Go to "Verification of Vehicle Repair" procedure.

Яндекс.Метрика