1.1.1.3. Check signal of component B2/5 (Hot film mass air flow sensor) via actual value with engine OFF.
Warning!Communication with ECU required.
1.1.2. Check seal of component B2/5 (Hot film mass air flow sensor) with air filter for cracks.
Possible cause and remedy
- Check seal of component B2/5 (Hot film mass air flow sensor) with air filter for cracks.
Note
- Proper sealing between the air cleaner housing and the housing of the HFM mass air flow sensor must be assured.
End of test
1.1.3. Test fuel pressure and delivery of component M3 (Fuel pump).
Safety note
Warning!Risk of explosion, poisoning and injury!Fuels are highly inflammable and toxic if inhaled. Fuels may cause skin damage. fuel vapors are
explosive, invisible and spread out at floor level, they are toxic if inhaled and produce giddiness and an anaesthetizing effect.Rules of conduct and
protective measures
- Wear suitable protective clothing.
- Pay attention to national safety precautions and regulations.
- No fire, sparks, naked flames and smoking.
- Ensure the work place is adequately ventilated.
- Never drain or pour in fuels over assembly pits.
- Store drained fuel in a suitable and sealed vessel.
- Immediately eliminate any fuel which has flowed out.
First-aid measures
- Clean moistened skin with water and soap.
- Change moistened clothing as quickly as possible.
- If fuel gets into your eyes, rinse out your eyes immediately with water and contact a doctor if necessary.
Test 1.1.3.1: Test fuel pressure and internal leaks of fuel system.
Test 1.1.3.2: Test delivery of component M3 (Fuel pump).
Test 1.1.3.3: Test current consumption of component M3 (Fuel pump).
Test 1.1.3.4: Test current consumption of component N10/2kA (Fuel pump relay).
1.1.3.1. Test fuel pressure and internal leaks of fuel system.
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