[4] Check component M4/7 (Engine and AC electric suction fan with integrated control).: Signal wire OPEN CIRCUIT

[4] Check component M4/7 (Engine and AC electric suction fan with integrated control).: Signal wire OPEN CIRCUIT

Test 1: Signal wire OPEN CIRCUIT

1. Signal wire OPEN CIRCUIT

Test 1.1: Test signal cable 'M4/7 (Engine and AC electric suction fan with integrated control)'.

1.1. Test signal cable 'M4/7 (Engine and AC electric suction fan with integrated control)'.
Test prerequisite

- Switch off ignition.
- Detach coupling at component M4/7 (Engine and AC electric suction fan with integrated control).
- Connect 35-pole socket box at engine wiring harness.
- Measure resistance with multimeter between socket (2.57) 27 of the 35-pole socket box tester and socket (M4/7) 4
Specified value

- Resistor< 1ohms
Question

- Is the measurement value OK?


YES
The measurement value is OK.Replace component M4/7 (Engine and AC electric suction fan with integrated control).

NO
The measurement value is not OK.Test wiring and plug connections between control module N3/9 (CDI control unit) and M4/7 (Engine and AC electric suction fan with integrated control) for Short circuit and Open circuit, repair or replace if necessary.