Honda Bmw 5 Service Manual
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![Page 432
.-
/Fuel Injection
I I - I
9 /ln~ut l~oltaqe supply I Fuse carrier, engine electronics
Table
c. Siemens MS 42.0 and MS 43.0 ECM pin assignments (continued) I I . I
Connector X60002 24-pin
1 linput IHeater, precatalyst oxygen sensor 1 I Heated oxygen sensor 1 in front of cat. conv.
I I I
18 llnout IHeater, post-catalyst oxygen sensor 2 ]Heated oxygen sensor 2 behind cat. conv.
Notes
Ground connector
Ground connector
B+ terminal
Fuse carrier, engine electronics
Pin
5
6
7
8
I I...](http://img.usermanuals.tech/thumb/34/100712/w64_bmw-5-service-manual-1509562501_d-431.png "Page 432
.-
/Fuel Injection
I I - I
9 /ln~ut l~oltaqe supply I Fuse carrier, engine electronics
Table
c. Siemens MS 42.0 and MS 43.0 ECM pin assignments (continued) I I . I
Connector X60002 24-pin
1 linput IHeater, precatalyst oxygen sensor 1 I Heated oxygen sensor 1 in front of cat. conv.
I I I
18 llnout IHeater, post-catalyst oxygen sensor 2 ]Heated oxygen sensor 2 behind cat. conv.
Notes
Ground connector
Ground connector
B+ terminal
Fuse carrier, engine electronics
Pin
5
6
7
8
I I...")
![Page 433
130-43
Fuel Injection ]
I I I
12 llnput IFeedback signal, engine start /Starter
Table c. Siemens MS 42.0 and MS 43.0 ECM pin assignments (continued)
I I - I
13 Input /I Alternator (generator) Notes
Throttle
valve
Crankshaft position sensor
Throttle valve (MS
42.0)
Throttle valve
Pin
6
7
8
9
10
11
14
15
16
17
18
19
20
I 1- I
23 l~round I~round, intaite air temperature sensor /Intake air temperature sensor
Signal
Output
Input
Input
Input
I I I
Component/function...](http://img.usermanuals.tech/thumb/34/100712/w64_bmw-5-service-manual-1509562501_d-432.png "Page 433
130-43
Fuel Injection ]
I I I
12 llnput IFeedback signal, engine start /Starter
Table c. Siemens MS 42.0 and MS 43.0 ECM pin assignments (continued)
I I - I
13 Input /I Alternator (generator) Notes
Throttle
valve
Crankshaft position sensor
Throttle valve (MS
42.0)
Throttle valve
Pin
6
7
8
9
10
11
14
15
16
17
18
19
20
I 1- I
23 l~round I~round, intaite air temperature sensor /Intake air temperature sensor
Signal
Output
Input
Input
Input
I I I
Component/function...")
. - Fuel Injection I Working inside E-box, disconnect ECM harness connector (arrow) by releasing fastener and pivoting connector up and off ECM. CA UTIOW Be sure ignition is OFF before disconnecting or reconnecting DME system components. Remove ECM from retaining brackets and lift off holder. Installation is reverse of removal Before attempting to start engine, use BMW service tester DISplus, MoDiC, GTl or equivalent: * Code replacement ECM with application information (i.e engine code, transmission type, etc.). Align ECM to EWS (electronic immobilizer). Siemens MS 42.0 and MS 43.0 ECM pin assignments ECM pin assignments are given in Table c. For engine man- agement system schematics, see ELE Electrical Wiring Di- agrams. / CAUTIOW I Al~ays wait at least one mfnule after turning off the ignition before remov;ng [he connecror irom rhe ECM. If the con- nector is removed before this time, residual power in the system relay may damage the ECM. Always connect or disconnect the control module con- nector and meter probes with the ignition off. When making checks at the ECM itself, a breakout box should be used to allow tests to be made with the connector attached to the ECM. This also prevents damage to the small terminals in the connector. As an alternative, the harness connector housing can be separated so that electrical checks can be made from the back of the connector. Table c. Siemens MS 42.0 and MS 43.0 ECM pin assignments Pin lslgnal l~om~onentlfunction 1 Notes Connector X60001 9-pin black 1 loutput I~erminai 15 I Unloeder relay terminal 15 2 I 1 Not used I 3 Not used 4 Ground Ground Ground point
.- /Fuel Injection I I - I 9 /ln~ut l~oltaqe supply I Fuse carrier, engine electronics Table c. Siemens MS 42.0 and MS 43.0 ECM pin assignments (continued) I I . I Connector X60002 24-pin 1 linput IHeater, precatalyst oxygen sensor 1 I Heated oxygen sensor 1 in front of cat. conv. I I I 18 llnout IHeater, post-catalyst oxygen sensor 2 ]Heated oxygen sensor 2 behind cat. conv. Notes Ground connector Ground connector B+ terminal Fuse carrier, engine electronics Pin 5 6 7 8 I I I 4 loutput l~hrottle valve supply (MS 42.0) I~hrottle valve (MS 42) Signal Ground Ground Input lnout 19 20 21 22 23 24 Connector 1 2 3 I I I 5 1 lnput ISignal, intake camshaft position sensor /camshaft position sensor 1 Componentlfunction Ground Ground Terminal 30 Voltaae SUDP~V input Ground Ground Ground Input Ground X60003 52-pin Input Input ~ - Heater, post-catalyst oxygen sensor 2 Ground, precatalyst oxygen sensor 1 Ground, precatalyst oxygen sensor 2 Ground, post catalyst oxygen sensor 1 ECM (DME main) relay signal activation Ground, post catalyst oxygen sensor 2 Signal, mass air flow sensor Signal, exhaust camshaft sensor Not used Heated oxygen sensor 2 behind cat. conv. Heated oxygen sensor 1 in front of cat. conv. Heated oxygen sensor 2 in front of cat. conv. Heated oxygen sensor 1 behind cat. conv. ECM Heated oxygen sensor 2 behind cat. conv. Hot film mass air flow sensor Camshaft position sensor
130-43 Fuel Injection ] I I I 12 llnput IFeedback signal, engine start /Starter Table c. Siemens MS 42.0 and MS 43.0 ECM pin assignments (continued) I I - I 13 Input /I Alternator (generator) Notes Throttle valve Crankshaft position sensor Throttle valve (MS 42.0) Throttle valve Pin 6 7 8 9 10 11 14 15 16 17 18 19 20 I 1- I 23 l~round I~round, intaite air temperature sensor /Intake air temperature sensor Signal Output Input Input Input I I I Component/function Not used Throttle valve supply potentiometer 2 Signal, crankshaft position sensor Signal, pedal position sensor 2 (MS 42.0) Signal, throttle position sensor 1 Not used Ground Ground Input Ground Ground Input Ground Cranltshaft position sensor 21 24 25 26 27 28 29 30 I 1- I 33 1 input ISignal, cylinder 1 fuel injector /cylinder 1 fuel injector Ground, throttle position sensor (MS 42.0) Ground, exhaust camshaftsensor I Signal, pedal position sensor 1 (MS 42.0) Ground, mass air flow sensor Ground, intake camshaft sensor 1 Signal, throttle potentiometer 1 Ground, throttle position sensor 22 loutput I~ignal, intake air temperature Ilntake air temperature sensor I I - I Throttle valve (MS 42.0) Camshaft position sensor I Throttle valve (MS 42.0) Hot film mass air flow sensor Camshaft position sensor i Throttle valve Throttle valve Ground Output Ground Input Output Ground Output Out~ut Ground, crankshaft position sensor Knoclt sensor 31 34 35 36 37 38 39 Signal, coolant temperature sensor Ground, coolant temperature sensor Signal, oil pressure Signal, engine oil temperature sensor Ground, engine oil temperature sensor Signal, knock sensor Signal, knock sensor 32 loutput ISignal, ltnock sensor l~nock sensor 40 41 Coolant temperature sensor Coolant temperature sensor Oil pressure switch Oil temperature sensor Oil temperature sensor Knoclt sensor I
Fuel Injection Table c. Siemens MS 42.0 and MS 43.0 ECM pin assignments (continued) Pin 42 43 44 45 46 47 48 49 50 51 52 Componentlfunction Signal, evaporative emissions valve Signal, throttle valve drive Signal, throttle valve drive Signal, engine coolant thermostat Signal, close idle speed control valve Signal, open idle speed control valve Signal, shield ltnock sensor Signal, resonance valve intake system Not used Not used Signal, secondary air injection pump valve Signal Input Input Input Input input Input Ground Input Input Notes Evaporative emissions valve Throttle valve Throttle valve Engine coolant thermostat (map controlled) idle speed control valve Idle speed control valve Shield, knock sensor Resonance valve intake system Secondary air injection valve Connector X60004 40-pin Notes instrument cluster control unit Instrument cluster control module Secondary air injection pump relay Electric (auxiliary) fan motor Pedal position sensor (PWG) (MS 43.0) Pedal position sensor (PWG) (MS 43.0) Pedal position sensor (PWG) (MS 43.0) Fuel pump relay 1 Instrument cluster control module ComponenVfunction Signal, battery charge indicator lamp Feedback signal, engine start Signal, secondary air injection pump Signal, electric cooling fan Not used Not used Pedal position sensor (PWG) (MS 43.0) Signal, pedal position sensor (PWG) (MS 43.0) Pedal position sensor (PWG) (MS 43.0) Signal, fuel pump relay 1 Signal, oil pressure switch Pin 1 2 3 4 5 6 7 8 9 10 11 Signal Input Input input input Input Input
Fuel Injection Table c. Siemens MS 42.0 and MS 43.0 ECM pin assignments (continued) 40 I I - . I - 9 llnput /signal, ignition coil 4 I Ignition coil 4 Not used 1 2 3 4 5 6 7 8 Connector X60005 9-pin Input Input Input Ground Ground Input Input Signal, ignition coil 3 Signal, ignition coil 2 Signal, ignition coil 1 Not used Ground Ground Signal, ignition coil 6 Signal, ignition coil 5 Ignition coil 3 Ignition coil 2 Ignition coil 1 Ground connector Ground connector Ignition coil 6 lqnition coil 5
130-46 Fuel Injection When system faults are detected, a diagnostic trouble code (DTC) is stored in the engine control module (ECM). The MIL also illuminates if an emissions-related fault is detected. When faults arise, or if the malfunction indicator lamp (MIL) is illuminated, begin troubleshooting by connecting BMW ser- vice tester DISplus. MoDiC, GTI or equivalent scan tool. The capabilities of OED II software has the potential to save hours of diagnostic time and to help avoid incorrect component re- placement and possible damage to system components. CA UTIOiU- The tests in this section may set fault codes (DTCs) in the ECM and illuminate the MIL. After ail testing is completed, access and clear DTC fault memory using an OED I/ or BMW compatible scan tool. See OBD On-Board Diag- nostics. Only use a digital multimeter for electrical tests. Relay positions can vary. Be sure to confirm relay posi- . tion by identifying the wiring in the socket using the wir- ing diagrams-found in ~~~~lectrical Wiring Diagrams. NOTE- OED I1 fault memory (including an illuminated MIL) can only be reset using~the special scan tool. Removing the connector from the ECM or disconnecting the battery will not erase the fault memory. The BMW-dedicated 20-pin diagnostic link connector (DLC) is in the right rear of the engine compartment. The 16-pin OBD I1 diagnostic connector (arrow) is located inside the car on the lower left dash panel.
Fuel Injection M5.2 system features The Bosch M5.2 system used on 1997 540i models uses an 88-pin control unit. The M5.2 system has the following func- tions and capabilities: Fully sequential cylinder-individual fuel injection. Integrated adaptive knock control. Oxygen sensor fuel mixture control. 0 Self-diagnosis and emergency operation characteristics. CAN-Bus link. 0 OED II functions (misfire detection, catalytic converter monitoring, oxygen sensor monitor, and fuel tank ventila- tion system). Electronic vehicle immobilization via EWS. One-touch starter function. Control of characteristic map thermostat. M5.2.1 system features The Bosch M5.2.1 system is used on 1998 540i models. The M5.2.1 control module utilizes the SKE (standard shell con- struction housing) with 5 connectors and a combined total of 134 pins. The M5.2.1 systefn has tile following functions or capabilities: Separate power supply relay for ignition coils. Leak diagnosis pump (LDP) control and feedback rnonitor- ing for evaporative system leak testing. Fuel evaporative system providing ORVR (on-board refuel- ing vapor recovery) compliancy. Batterylalternator charge logic (idle speed varied with the battery state of charge). CAN-Bus communications with the instrument cluster EWS Ill rolling code ISN interface. More sensitive ignition knock sensors. Pulse width modulated (P-W-M) Heating and AIC (IHKA) status signal. Running loss (312-way) solenoid valve.
- Fuel Injection ECM relay, testing The engine control module (ECM) relay is energized via the ECM and supplies battery positive (B+) power to many of the engine management components and subsystems. If this re- lay is faulty, the engine will not start. CAUTIOI\C Relay positions can vary. Be sure to confirm relay position by identifying the wiring in the socket using the wiring diagrams in ELE Electrical Wiring Diagrams. NOTE- The ECM relay is also referred to as the DME main relay. ECM relay powers: * ECM Ignition coils Fuel injection Evaporative leak detection pump (5.2.1 only) Idle air actuator Camshaft sensors Evaporative emissions valve Hot film mass air flow sensor Fuel pump relay Oxygen sensor heaters 4 Working in right rear of engine compartment: Release interior ventilation filter cover latch (A) and re- move cover. Release plastic locking tab (B). Rotate duct inward (arrow) to unloclc from bulk head and remove duct. 0 Release spring lock (C) to remove lower filter housing. Slide filter housing away from inner fender to remove. - Remove electrical box (E-box) cover fasteners and remove cover.
130-50 Fuel Injection Bosch M5.2 ECM relay 1 HoL al ail iirnel XOL a1 ail limes i--[-----i F109 (BOA) electronics I L.$.....: .I: ECM relay . . . . . . . . . , 8,s :, 6 1 .. ... ~~.~~. . ...... .-, Engine control ii~~-~.~~..~ ........ ~~~~~~.~~~~:. module relay -;I Of? ,c,;,,, < With ignition off, remove ECM relay (arrow) in electronics box (E-box) at right rear of engine compartment. NOTE- Relay locations can vary. Conh relay identification by matcliing wiring colors and terminal numbers. 4 Check for voltage at terminal 6 of main relay socket (30-red wire). On M5.2 cars also check for battery voltage at terminal 8. . . . . . . . . . , If battery voltage is present, continue testing . If battery voltage is not present, check large red wire(s) in relay socltet. See ELE Electrical Wiring Diagrams. %P,,tt - Reinstall relay and turn ignition on. Gain access to underside of relay socket and checlc for ground at terminal 4 (85-brown wire). . . . . . . . . . . . . - - - - - - - - - . - - - . . l ,,-. ; Engine i f .: , ; Fuse carrier .,A . :engine /;is? /control L.!.!! .... 1.: ...... !.::..! I lij :module electronics If ground is present, continue testing If ground is not present, signal from ECM is missing. Checic wire between ECM and relay. 4 With ignition on and relay installed, check for battery voltage at terminal 2 (87-redlwhite wire). On M5.2.1 cars also checlc for battery voltage at terminal 5. If battery voltage is present, relay has energized and is functioning correctly. If battery voltage is not present and all earlier tests are OK, relay is faulty and should be replaced.