輕型越野車自動分時分動器的分析與設(shè)計含若干張CAD圖
輕型越野車自動分時分動器的分析與設(shè)計含若干張CAD圖,輕型,越野車,自動,時分,分析,設(shè)計,若干,cad
外文資料
Incorrect Fuel Gauge Reading
Model：
BMW E53 (X5) vehicles produced before August 17th 2000
Complaint:
After the tank has been filled the fuel gauge will either not read “full”, or the correct reading will only be shown once the ignition has been switched OFF and ON again. These faults will be stored in the Instrument Cluster:
- Fault Code 8 - Fuel tank sensor 1 (fuel – pump side) and/or
- Fault Code 9 - Fuel tank sensor 2 (without fuel pump)
These errors are caused by a non-conducting deposit being formed on the conductor surface of the fuel level sensor.
Remedy:
Using the DIS or MoDiC:
-Select diagnosis
-Select Function Selection/Complete Vehicle/Body/Displays and Information/Instrument Cluster.
-Select Test Plan
-Select 4 – Expert Mode/Read Fault Memory to confirm fault codes 8 and/or 9 are set
-Select 3 Service Functions/ 1 – Test Code
-Press ‘Test Code’ button to save test code.
-Print Diagnosis Report
-Remove and replace the right hand delivery unit and the left hand fuel level sensor. Refer to repair instructions 16 12 000 and 16 12 001.
-Also to ensure a correct installation of the left side sensor use the following procedure:
-Lubricate the small o-ring for the fuel transfer pipe to ensure the o-ring does not push out of position when the fuel transfer pipe is being installed.
-Lubricate the inside edge of the large o-ring seal, so that the fuel level sensor will slide easily into position.
-The fuel level sensor must be installed keeping the top flange square to the tank at all times. Rotate the sensor so that the lug is located above it’s recess, then push the sensor vertically down into position. It must NOT be installed at an angle.
-Using the DIS or MoDiC select 4 – Expert Mode/Clear Fault Memory to clear the fault code memory.
Fuel Gauge Reads 1/4 when Tank Is Full
Model:
BMW Z3 (E36/7) produced from September 1998to April 1999
Complaint:
After refueling the fuel gauge reads 1/4 full, and will then move extremely slowly to read full. This is due to a software error in the Instrument Cluster.
Remedy:
Re-code the instrument cluster using DIS CD Version 18.0 or later:
-Select Coding/Programming/ZCS Coding/E36/Recoding/Kombi and then follow the on-screen instructions to complete the coding process.
-Recoding the instrument cluster will start an internal day counter. If the test3.1 contains a value greater than 0 indicates the instrument cluster will already contain the fix.
Evaporative Emission Control – On Board Diagnostic System
Model:
E36 – BMW 318i and BMW Z3 with M44 produced from January 1997
E36 – BMW 328i produced from October 1995
E36 – BMW M3 produced from March 1996
E36 – BMW 740i/iL and BMW 750iL produced from May 1997
Complaint
The ‘check engine lamp is illuminated, and one or more of the following faults are set in the Engine Control Module (DME):
-In the M52 Engine the complaints include the tank venting system, minor leak (Code 251), Tank ventilation (Code 252), Shut-off valve, activated charcoal filter, jammed shut (Code 253) or Tank venting system, major leak (Code 254).
-In the M44, M62 or M73 Engine the complaints include the tank venting system, major leak (Code 94), Shut –off valve, activated charcoal filter, jammed shut (Code 96) or Tank venting system, minor leak (Code 97).
Remedy:
The check engine lamp will only be illuminated if the fault is present during two consecutive drive cycles. To complete a check of these systems the vehicle needs to run in a way that allows these functions to work fully. Any attempt to duplicate the specific driving condition will be unsuccessful, thus it is recommended that the test modules through BMW specific test tools are utilized. One driving cycle includes engine start up – drive – engine shutoff and will test the:
-Evaporative system – component functional check
-Evaporative system leak detection
-Tank venting/shutoff valve operation
-Monitoring catalytic converter efficiency
-Secondary air induction operation
If a fault occurs due to a major leak or a minor leak being present then check if the fuel filer cap has been installed correctly. This can be easily detected if the cap can be easily pulled off. To clear the fault properly install the cap, printout the fault information, clear the fault, select service functions, select DME system test, select 3- Leakage diagnosis, tank venting system. If the fault returns the system needs to be checked for further leaks using the Evaporative System Leak Test Pool with an A/C leak detector.
If NO leak is detected the following component checks need to be carried out:
-Check the fuel filler gasket has not been damaged.
-Check operation of purge valve.
-Check purge valve using a hand held vacuum pump to check the valve can hold a vacuum.
-Check the o-ring is properly installed.
-Check for any broken hose fittings in the expansion tank.
-Check the operation of the shut-off valve.
-Check the shut-off valve has been correctly installed into the charcoal canister.
-Check routing of hose going to the fuel tank pressure sensor. If the hose is pinched it should be rerouted or shortened.
If the fault occurs through the shut-off valve the following must be checked:
-The routing of the hose going to the fuel tank pressure sensor. If the hose is pinched it should be rerouted or shortened.
-The operation of the Shut-off Valve, Purge Valve and Fuel Tank Pressure Sensor should be tested.
-Remove the shut-off valve from the charcoal canister and look for obstructions which do not allow the valve to shut correctly.
Stabilant 22A Electrical Contact Enhancer
Model:
All BMW
Complaint:
Connectors which carry low current are more likely to form deposits which affect the resistance of the circuit through the plug connector. Depending upon the particular circuit these deposits can cause malfunctions and consequently activate warning lamps and check control indicators.
Remedy:
Part replacement can temporarily stop the problem.
If the connector is the problem then without disconnecting the connector measure the resistance of the circuit running through the connector to make sure the connector has a high resistance. A good resistor will have close to 0 ohms resistance.
Visually examine the male and female terminals in the connector housing by removing them.
Look at the integrity of the wire crimps, and in some male terminals the integrity of the weld of the male pin to the terminal. Then reinstall.
With a zero residue electrical contact cleaner liberally spray the male and female connectors, and allow the air to dry.
Apply Stabilant 22 A to both male and female terminals so they are saturated, and reconnect the connectors while they are still wet. When the Stabilant 22A dries it will leave a thin coating of polymer film which is conductive between mating surfaces, and is non-conductive between adjacent pins. It can also prevent the formation of more harmful deposits.
Service Action to Recode Instrument Cluster
Model:
BMW Z3 (E36/7) produced between August 1998 to May 1999
Complaint:
After filling with fuel the fuel gauge can show a low reading, then while driving can move to correct position.
Remedy:
Utilize the ‘Service Menu’ of the Dealer Communication System, enter the chassis number of the vehicle involved and based upon the response of the system either proceed with corrective action, or take no action at all. If action is necessary then:
Recode the instrument cluster using DIS CD Version 18.0 by
Connect the DIS or MoDiC III to the diagnostic connector, switch on the engine, select
‘Encoding ZCS (‘3’)’, select Series E36 (‘4’), Select recoding (‘1’), select Kombi (‘10’), follow the on screen instructions to complete.
Coolant Temperature Gauge Reads High Under Normal Operating Conditions
Model:
BMW M roadster (E36/7) All vehicles produced until June 1998
Complaint:
Under normal operating conditions the pointer on the coolant temperature gauge reads between the mid-way point and the mark above the mid-way point. This is due to a coding error during the vehicle assembly.
Remedy:
Do not replace any components instead:
Recode the instrument cluster using DIS CD Version 18.0 by
Connect the DIS or MoDiC III to the diagnostic connector, switch on the engine, select
‘Encoding ZCS (‘3’)’, Select Series E36 (‘4’), Select recoding (‘1’), select Kombi (‘10’), follow the on screen instructions to complete.
Oxygen Sensor
Oxygen Sensor Update and DME Reprogramming
Model:
BMW E36 with M44 engine
Complaint:
Over time the oxygen sensors on these vehicles can develop poor internal electrical connections which will illuminate the check engine light. When this occurs possible faults codes set in the DME are:
Fault Code 10, Oxygen Sensor Pre Catalyst and/or
Fault Code 12, Oxygen Sensor Post Catalyst.
Remedy:
Utilize the ‘Service Menu’ of the Dealer Communication System, enter the chassis number of the vehicle involved and based upon the response of the system either proceed with corrective action, or take no action at all. If action is necessary then:
Replace both oxygen sensors (pre cat regulating sensor and post cat monitoring sensor) and using the DIS or MODIC P14.0 programming software and reprogram the Engine Control Module.
Quality Monitoring M60 Oxygen Sensors
Model:
BMW E34 and BMW E38 with M60 B40 engines produced from September 1994 to August 1995
Complaint:
The oxygen sensors of the listed vehicles need to be replaced with new sensors as a quality monitoring gauge. The old sensors should be returned to the Warranty Parts return Centre with a copy of any DME fault codes if present.
Remedy:
Utilize the ‘Service Menu’ of the Dealer Communication System, enter the chassis number of the vehicle involved and based upon the response of the system either proceed with corrective action, or take no action at all. If action is necessary then:
-Obtain customer permission and signature to authorize the extraction of both left and right oxygen sensors.
-Read and print out DME faults.
Test/hex code printout procedure:
Select ‘3 service functions’ and right arrow button.
Select ‘1 test code’ and right arrow button.
Select ‘test code R’
Select print ‘diagnosis report’
-Ignore any oxygen sensor fault codes if present.
-Clear all fault codes stored in the DME
-Replace both oxygen sensors referring to the repair manual group 11section.
Oxygen Sensor Wiring Harness Voluntary Recall Campaign No.98E A02
Model:
BMW E36 with M42 engine (manual transmission only)
Complaint:
A voluntary campaign from BMW in North America is recalling the oxygen sensor wiring harness of the above vehicles. The oxygen sensor harness may have been routed incorrectly during production. One possible solution could be the oxygen sensor harness has been accidentally secured with clips to the exhaust heat shield and/or to a bracket on the transmission housing. The oxygen sensor harness could stretch and eventually break with the movement between the vehicle body, transmission and exhaust system causing the check engine light to illuminate and the fault code 70 – oxygen sensor disconnected to set in the DME.
Remedy:
Utilize the ‘Service Menu’ of the Dealer Communication System, enter the chassis number of the vehicle involved and based upon the response of the system either proceed with corrective action, or take no action at all. If action is necessary then:
-Read and print out the DME faults.
-Troubleshoot and repair DME fault codes other than fault code 70 using the DIS tester instructions as necessary.
-Check the oxygen sensor harness for hold down clips or any signs (crimped or pinched areas in the sheathing) where a clip or other hold down device may have been installed in the past.
-Remove all clips and other oxygen sensor wiring harness hold down devices from the exhaust heat shield, transmission bracket.
-If installed, bend the transmission bracket using a pair of up over the bolt head.
-The oxygen sensor must only be replaced if the oxygen sensor harness had any fastener holding it in place, or the oxygen sensor shows any signs of it being fastened previously, or Fault Code 70 is stored in the DME.
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