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Home >> Mercedes Benz >> 2002 >> SLK 230 (170.449) L4-2.3L SC (111.983) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P201D >> [8] Self Adaptation of Mixture Formation: Mixture Is Too Lean at Idle Speed >> Test 2: Test Fuel Pressure and Delivery of Component M3 (Fuel Pump) >> Test 2B: Test Delivery of Component M3 (Fuel Pump)

Test 2B: Test Delivery of Component M3 (Fuel Pump)



Test delivery of component M3 (fuel pump)

Figure legend





- 001 Sockets of component N3/10 (ME-SFI control module)
- 05 35-pin socket box
- 043 Pressure gage
- 050 126-pin socket box
- 055 Measuring beaker
- 069 Pressure hose (119 589 04 63 00)
- 108 Test cable N3/10 (ME-SFI control module)
- N3/10 (ME-SFI control module)
- II 1/63 Connection Test cable
- II 64/126 Connection Test cable

Test sequence
- Switch off ignition.
- Connect test pressure gauge.
- Separate fuel feed hose at the fuel line and hold in a suitable measuring beaker.
- Insert bridge:
- [5.5] 5<-->97 [4.12]
- Switch on ignition.
- Component M3 (fuel pump) runs.

Specified value
- 1 liters of fuel should flow in a maximum of 35 seconds.

Question: Is the measured value okay

No
- The measured value is not o.k.
Possible cause and remedy
- Inspect fuel lines for restriction points (in particular pinching).
- Fuel filter
- Test current consumption of component M3 (fuel pump)

Yes
- The measured value is o.k.
**End of test**
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