P2073

M4/3 (engine/AC electric suction fan)

Test 1: Check component M4/7 (Engine and AC electric suction fan with integrated control).

1. Check component M4/7 (Engine and AC electric suction fan with integrated control).

Test 1.1: Check component M4/7 (Engine and AC electric suction fan with integrated control) by means of actuation.

Test 1.2: Test PWM signal for operating the suction fan.

1.1. Check component M4/7 (Engine and AC electric suction fan with integrated control) by means of actuation.
Test prerequisite

- Coolant temperature< 80° C
- Charger connected(The battery voltage must be higher than 12.5 V.)
- Ignition ON
- Engine not running
- Vehicle stationary
- The fuses of component M4/7 (Engine and AC electric suction fan with integrated control) are OK.
Actual values:
- Temperature of coolant:Warning! Communication with ECU required.
Proceed to 'Actuation' with F2

1.2. Test PWM signal for operating the suction fan.
Figure legend

- AConnectionTest cable 35-pin socket box
- 001Sockets of component N3/10 (ME-SFI [ME] control unit)
- 0535-pin socket box
- 050126-pin socket box
- 108Test cableN3/10 (ME-SFI [ME] control unit)
- N3/10 (ME-SFI [ME] control unit)
- II 1-63ConnectionTest cable
- II 64-126ConnectionTest cable
Test sequence

- Switch off ignition.
- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).
- Connect socket box (35-pin) to component N3/10 (ME-SFI [ME] control unit).
- Switch on ignition.
Continue to test with button F2







Test prerequisite

- Coolant temperature< 80° C
- Charger connected(The battery voltage must be higher than 12.5 V.)
- Ignition ON
- Engine not running
- Vehicle stationary
- The fuses of component M4/7 (Engine and AC electric suction fan with integrated control) are OK.
Actual values:
- Temperature of coolant:Warning! Communication with ECU required.
Proceed to 'Actuation' with F2