Test prerequisite
- Coolant temperature< 80锟斤拷 C
- Charger connected(The battery voltage must be higher than 12.5 V.)
- Ignition ON
- Engine not running
- Vehicle stationary
- There is no fault code present for component B11/4 (Coolant temperature sensor).
- The fuses of component M4/7 (Engine and AC electric suction fan with integrated control) are OK.
Actual values:
- Coolant temperature:Warning! Communication with ECU required.
Continue with button F2
2359
The control line to component M4/7 (Engine and AC electric suction fan with integrated control) has Open circuit.
Possible cause:
- Heat management
Affected functions:
- Engine diagnosis
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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.
Check component M4/7 (Engine and AC electric suction fan with integrated control) by means of actuation.
Test prerequisite
- Coolant temperature< 80锟斤拷 C
- Charger connected(The battery voltage must be higher than 12.5 V.)
