奔馳維修案例

1、Fault messages concerning hot film mass air flow sensor (HFM) and/or intake air temperature sensor -投訴Faults related to the hot film mass air flow sensor (HFM) and/or intake air temperature sensor are stored in the fault memory of the CDI4/CDI5/CDI6 engine control unit.Note: Oil coating the clean ai

2、r line (Y-pipe) with integrated hot film mass air flow sensors does not cause signal drift and therefore does not generate fault entries related to the HFM.Faults concerning the hot film mass air flow sensor and intake air temperaturesensor are usually caused by the following faults in the vici comp

3、onents:of theLeakage:· at the raw air line upstream of the air filter· at the clean air line between the air filter and the turbocharger· in the charge air system (green seal ring between turbocharger and charge air line to noise damper,· seal rings at the connections between the

4、 charge air hoses and the Henn couplingsContact faults at electrical connections:at the hot film mass air flow sensor at the engine control unit··Note: To assist with our analysis of the fault, please notify us of all contact faults via your national headquarters (MPC), stating the chassis

5、 number,age, stored fault codes and the exact designation of the faulty connection主題編號GI07.07-P-042272車型1設(shè)計組07.07 Air flow meter, air mass meter日期03-25-2008有效性All ms with engine 642 改變的(TIPS Case or fax with copy of order form, quick test or control unit log with prior quick test - otherwise no faul

6、ts are listed in the CU log - and stating the exact location of the fault!)If theage exceeds approx. 30,000 km, a prematurely clogged air filter canresult in fault entries in vehicles operated in difficult conditions.修改In case of leakage:· Check raw air line for leaks, visual inspection of all

7、connections (cracks,incorresembly)· Check charge air system for leaks, additional visual inspection of allconnections (oil leakage, cracks, incorresembly)In case of faults at electrical connections:· Check connectors for proper seating/engagement· Check pins on plugs and sockets (pin

8、bent back or damaged, corrosion of pins due to moisture ingress)· Disconnect and reconnect connectorIn case of vehicles operated in difficult conditions with heavily fouled air filters, replace air filter elements.After replacing the air filter elements, reset the learned values for the air fil

9、ter contamination(DASCDI4/5/6 control unit / Control unit adaptation / Reset air filterlearned values).If the checks listed above revealed faults in the system and these have been rectified, always reset the HFM drift compensation(DASCDI4/5/6 control unit / Control unit adaptation / Reset valuesfor

10、HFM drift compensation).癥狀Power generation / Engine management / Engine management indicator lamp/ Engine diagnosis / Lights upPower generation / Engine management / Engine management indicator lampPower generation / Engine management / Engine management indicator lamp/ Electronic injection pump con

11、trol EPC / Lights up癥狀/ Electronic diesel control / Lights up單元/故障代碼單元故障代碼故障代碼描述CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (CLK209,G-Class 463)2065(001)Test components B2/6 (Left hot film mass air flow sensor) and B2/7 (Right hot film mass air flow sensor). The voltage sup

12、ply is too highCDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (S-Class 221,CLK 209,R-Class251,M-Class 164,GL164,G-Class 461,CLS219,G-Class 463,E-Class 211)2600(001)Mass air flow sensorSensorLeft The air mass is too large.CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Die

13、sel Injection (S-Class 221,R-Class 251,M-Class 164,GL 164,CLS 219,E-Class211)3053(002)Check component B2/7b1 (Intake air temperature sensor). The signal voltage is too low.CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (S-Class 221,CLK 209,R-Class251,M-Class 164,GL164,G-Class

14、461,CLS219,G-Class 463,E-Class 211)2629(008)Intake air temperatureSensors PlausibilityCDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (CLK209,G-Class 463)2024(001)Check component B2/7b1 (Intake air temperature sensor). The signal voltage is too high.CDI 4-Common Rail Diesel Inj

15、ection, CDI4-Common Rail Diesel Injection (G-Class 461)2024(001)Check component B2/5b1 (Intake air temperature sensor). The signal voltage is too high.CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (S-Class 221,R-Class 251,M-Class 164,GL 164,CLS 219,E-Class211)2024(001)Check c

16、omponent B2/7b1 (Intake air temperature sensor). The signal voltage is too high.CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (CLK209,G-Class 463)2024(002)Check component B2/7b1 (Intake air temperature sensor). The signal voltage is too low.CDI 4-Common Rail Diesel Injection,

17、 CDI4-Common Rail Diesel Injection (G-Class 461)2024(002)Check component B2/5b1 (Intake air temperature sensor). The signal voltage is too low.CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (S-Class 221,R-Class 251,M-Class 164,GL 164,CLS 219,E-Class211)2024(002)Check component

18、 B2/7b1 (Intake air temperature sensor). The signal voltage is too low.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2065(001)Check component Hot film mass air flow sensor. The voltage supply is too highCDI 5-Common Rail Diesel Injec

19、tion, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2065(002)Check component Hot film mass air flow sensor. The voltage supply is too low.CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (CLK209,G-Class 463)2602(004)Check component B2/6 (Left hot f

20、ilm mass air flow sensor). Short circuit or open circuitCDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2602(002)Check component B2/6 (Left hot film mass air flow sensor). The air mass is too small.CDI 5-Common Rail Diesel Injection, C

21、DI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2603(002)Check component B2/7 (Right hot film mass air flow sensor). The air mass is too small.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2600(002)Mass ai

22、r flow sensorSensorLeft The air mass is too small.CDI 5-Common Rail Diesel2602Check component B2/6 (Left hotInjection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)(001)film mass air flow sensor). The air mass is too large.CDI 5-Common Rail Diesel Injection, CDI5-Comm

23、on Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2603(004)Check component B2/7 (Right hot film mass air flow sensor). Short circuit or open circuitCDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2601(002)Mass air flo

24、w sensorSensorRight The air mass is too small.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2601(001)Mass air flow sensorSensorRight The air mass is too large.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-C

25、lass 221,M-Class 164,GL164,E-Class 211)2600(001)Mass air flow sensorSensorLeft The air mass is too large.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2603(001)Check component B2/7 (Right hot film mass air flow sensor). The air mass

26、is too large.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2602(004)Check component B2/6 (Left hot film mass air flow sensor). Short circuit or open circuitCDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (G-Clas

27、s 461)2602(004)Check component B2/5 (Hot film mass air flow sensor). Short circuit or open circuitCDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2097(002)Mass air flow sensor (raw value)RightOffset drift Duty cycleReadout too smallCDI

28、 5-Common Rail Diesel2096Mass air flow sensor (rawInjection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)(001)value)LeftOffset drift Duty cycleReadout too largeCDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Clas

29、s 211)2097(001)Mass air flow sensor (raw value)RightOffset drift Duty cycleReadout too largeCDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2096(002)Mass air flow sensor (raw value)LeftOffset drift Duty cycleReadout too smallCDI 5-Comm

30、on Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2645(001)Check component B2/7 (Right hot film mass air flow sensor). Value is above limit.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Clas

31、s 211)2627(004)Mass air flow sensor Components B2/6 (Left hot film mass air flow sensor) and B2/7 (Right hot film mass air flow sensor) are faulty.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2646(001)Check component B2/6 (Left hot

32、film mass air flow sensor). Value is above limit.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2628(008)Mass air flow sensor PlausibilityCDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,G

33、L164,E-Class 211)2630(001)Mass air flow sensorLeftSensitivity drift Air mass ratio for calculated quantity (top)CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL2631(002)Mass air flow sensorRightSensitivity drift Air mass ratio for calculated quantity

34、(bottom)164,E-Class 211)CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (S-Class 221,R-Class 251,M-Class 164,GL 164,CLS 219,E-Class211)2602(004)Check component B2/6 (Left hot film mass air flow sensor). Short circuit or open circuitCDI 5-Common Rail Diesel Injection, CDI5-Commo

35、n Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2631(001)Mass air flow sensorRightSensitivity drift Air mass ratio for calculated quantity (top)CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2630(002)Mass air flow s

36、ensorLeftSensitivity drift Air mass ratio for calculated quantity (bottom)CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2647(001)Check component B2/7 (Right hot film mass air flow sensor). Value is above limit.CDI 5-Common Rail Diese

37、l Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2644(001)Check component B2/6 (Left hot film mass air flow sensor). Value is above limit.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2098(002

38、)Check component B2/6b1 (Intake air temperature sensor). Value is below limit.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2099(001)Check component B2/7b1 (Intake air temperature sensor). Value is above limit.CDI 5-Common Rail Diese

39、l Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2099(002)Check component B2/7b1 (Intake air temperature sensor). Value is below limit.CDI 5-Common Rail Diesel2098Check component B2/6b1 (IntakeInjection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class

40、164,GL164,E-Class 211)(001)air temperature sensor). Value is above limit.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2094(002)Check component B2/6b1 (Intake air temperature sensor). Value is below limit.CDI 5-Common Rail Diesel Inj

41、ection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2094(001)Check component B2/6b1 (Intake air temperature sensor). Value is above limit.CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (S-Class 221,CLK 209,R-Class251,M-Class 164,GL164,G-Class 4

42、61,CLS219,G-Class 463,E-Class 211)2601(002)Mass air flow sensorSensorRight The air mass is too small.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2095(001)Check component B2/7b1 (Intake air temperature sensor). Value is above limit.

43、CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2095(002)Check component B2/7b1 (Intake air temperature sensor). Value is below limit.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,

44、E-Class 211)3053(004)Check component B2/7b1 (Intake air temperature sensor). Signal faultCDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)3052(002)Check component B2/6b1 (Intake air temperature sensor). The signal voltage is too low.CDI

45、 5-Common Rail Diesel Injection, CDI5-Common Rail3053(002)Check component B2/7b1 (Intake air temperature sensor). TheDiesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)signal voltage is too low.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL

46、164,E-Class 211)3053(001)Check component B2/7b1 (Intake air temperature sensor). The signal voltage is too high.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)3052(004)Check component B2/6b1 (Intake air temperature sensor). Signal fau

47、ltCDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)3052(001)Check component B2/6b1 (Intake air temperature sensor). The signal voltage is too high.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Clas

48、s 164,GL164,E-Class 211)2629(008)Intake air temperatureSensors PlausibilityCDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2024(001)Check component B2/7b1 (Intake air temperature sensor). The signal voltage is too high.CDI 4-Common Rai

49、l Diesel Injection, CDI4-Common Rail Diesel Injection (CLK209,G-Class 463)2603(002)Check component B2/7 (Right hot film mass air flow sensor). The air mass is too small.CDI 5-Common Rail Diesel Injection, CDI5-Common Rail Diesel Injection (S-Class 221,M-Class 164,GL164,E-Class 211)2024(002)Check com

50、ponent B2/7b1 (Intake air temperature sensor). The signal voltage is too low.CDI6-Common Rail Diesel Injection (C-Class 204)101500The lower limit value of component B2/6 (Left hot film mass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)101400The upper limit value o

51、f component B2/7 (Right hot filmmass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)101300The upper limit value of component B2/6 (Left hot film mass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)101600The lower limit value of comp

52、onent B2/7 (Right hot film mass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)100B00The upper limit value of component B2/6 (Left hot film mass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)100D00The lower limit value of component

53、 B2/6 (Left hot film mass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)100C00The upper limit value of component B2/7 (Right hot film mass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)100E00The lower limit value of component B2/7

54、 (Right hot film mass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)100900The lower limit value of component B2/6 (Left hot film mass air flow sensor) has been reached.CDI 4-Common Rail Diesel Injection, CDI4-Common Rail Diesel Injection (G-Class 461)2603(002)Check

55、 component B2/5 (Hot film mass air flow sensor). The air mass is too small.CDI6-Common Rail Diesel Injection (C-Class 204)100700The upper limit value of component B2/6 (Left hot film mass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)100A00The lower limit value of

56、component B2/7 (Right hot film mass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)100800The upper limit value of component B2/7 (Right hot filmmass air flow sensor) has been reached.CDI6-Common Rail Diesel Injection (C-Class 204)101900Component B2/6 (Left hot film mass air flow sensor) has a plausibility error.CDI6-Commo