2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 575

Test 1.1: Test signal voltage of component B70 (Crankshaft Hall sensor).

Test 1.2: Check power supply of component B70 (Crankshaft Hall sensor).

1.1. Test signal voltage of component B70 (Crankshaft Hall sensor).

Test 1.1.1: The engine does not start.

Test 1.1.2: Engine running

1.1.1. The engine does not start.

Figure legend

- A -ConnectionTest cable 35-pin socket box

- 001 -Sockets of component N3/10 (ME-SFI [ME] control unit)

- 05 -35-pin socket box

- 050 -126-pin socket box

- 108 -Test cable 266 589 01 63 00

- N3/10 (ME-SFI [ME] control unit)

- II 1-63ConnectionTest cable

- III 64-126ConnectionTest cable

Warning!

- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050).

Continue to test with button F2

Settings

- Trigger level: 50 %

- Time range: 5 ms

Test sequence

- Switch off ignition.

- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).

- Observe oscilloscope pattern between sockets (M.80) 80(A7) and (M.81) 81(A4) of the 126-pole socket box tester.

- Start engine.

Specified value

- Measuring system

Warning!The rising signal edge in the gap (see arrow) may vary.Note

- Measuring system:Communication with ECU required