Question about 1989 Mercedes-Benz 300-Class

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Need Injection control unit wiring diagram MB W-124 1989 300E

I haven´t been able to find the wiring diagram of the control unit harness or connector for my MB 300E 1989. Need it to connect electronic analyzer I am developing.

Any link, help?

Thank you in advance, sincerely,

Jose (Chile)

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  • josedelamaza Nov 04, 2008

    I still need a solution. Cannot pay, sorry.

  • Anonymous Mar 12, 2014

    Need SPN & FMI ADDRESS FOR ENGINE RPM CONTROL
    NEED SPN &FMI Address FOR REGEN REQUEST LAMP
    & REGEN ACTIVE

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  • Master
  • 409 Answers

Go to www.alldatadiy.com they have all the wiring diagrams there.

Posted on Feb 13, 2009

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O2 Nissan maxima has p1800 and p0455 it seems to be running rough.. What do I need to do?


DTC P0455: Evaporative Emission System Leak Detected (Gross Leak/No Flow)
Probable causes:
  1. Sensor or solenoid faulty
  2. Connector terminal contact is damaged or corroded
  3. Wire harness - Check harness for correct voltage, open, short to ground or short to voltage
  4. Update control unit software - Check for the latest control unit update
  5. Powertrain or Engine Control Module faulty
  6. Vacuum leaks, damaged hoses or improper routing
  7. EVAP system - Check fuel cap, canister, valves or components
DTC P1800: VIAS S/V Circuit (problem)

  1. Sensor or solenoid faulty
  2. Connector terminal contact is damaged or corroded
  3. Wire harness - Check harness for correct voltage, open, short to ground or short to voltage
  4. Update control unit software - Check for the latest control unit update
  5. Powertrain or Engine Control Module faulty

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1994 mustang GT 5.0 blows 20 amp EEC fuse


Have a short. This procedure may help out. Need test light and volt meter.

1. Disconnect C104 and see if the Red (RD) wire out of the Constant Control Relay Module (CCRM) (pin 12 and/or 24) is shorting to ground, to verify which side of the connector the circuit is shorted.

2. If the RD wire no longer indicates a short to ground after disconnecting C104, inspect the engine harness feeding the injectors, Idle Air Control (IAC) solenoid and Canister Purge (CANP) solenoid for chafing against bare metal on top of the engine.

3. If the RD wire still indicates a short to ground after disconnecting the C104 connector, inspect the harness to the secondary air injection solenoids, EGR Vacuum Regulator (EVR) solenoid, Mass Air Flow (MAF) and Powertrain Control Module (PCM) for a short to ground.
INFO Tip C104 is a 42-terminal connector located at the rear passenger side of the engine, near the A/C accumulator.

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What are the funtion of the wires at the back of the injection pump


Youi will need the vehicles wiring diagrams to figure that out. They may go nowhere, the wiring harness used in modern cars is the same for all variants and trim levels, so many models may not have a certain device but the connectors will be on the harness anyway.

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How to replace cam sensor


This unit is part of the distributor.




OPERATION


See Figure 1
The ECM uses the camshaft signal to determine the position of the No. 1 cylinder piston during its power stroke. The signal is used by the ECM to calculate fuel injection mode of operation.
If the cam signal is lost while the engine is running, the fuel injection system will shift to a calculated fuel injected mode based on the last fuel injection pulse, and the engine will continue to run.



0900c1528008f0d2.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: Camshaft Position (CMP) sensor location


TESTING


See Figure 2



0900c1528008f0d3.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: Camshaft Position (CMP) sensor wiring schematic

  1. Disconnect the CMP sensor wiring harness and connect an LED test light between CMP harness terminal C and battery ground.
  2. With the ignition ON and the engine off, verify that the test light illuminates.
  3. If not as specified, repair or replace the fuse and/or wiring.
  4. Carefully connect the test light between CMP harness terminal A and C and verify that the test light illuminates.
  5. If not as specified, repair the CMP harness ground circuit (terminal A).
  6. Turn the ignition OFF and disconnect the test light.
  7. Next, connect suitable jumper wires between the CMP sensor and CMP sensor harness. Connect a DC volt meter to the jumper wire corresponding to CMP terminal B and battery ground.
  8. Start the engine and verify that the voltage signal is 5-7 volts.
  9. If it is not as specified, the CMP sensor may be faulty.


REMOVAL & INSTALLATION


  1. Disconnect the negative battery cable.
  2. Detach the sensor harness connector at the sensor.
  3. Unfasten the retaining bolt, then remove the sensor from the camshaft housing. Inspect the sensor O-ring for wear, cracks or leakage and replace if necessary.

To install:
  1. Lubricate the O-ring with clean engine oil, then place on the sensor. Install the sensor into the camshaft housing.
  2. Install the CMP sensor retaining bolt, then tighten to 88 inch lbs. (10 Nm).
  3. Attach the sensor harness connector.
  4. Connect the negative battery cable.

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I would check the wires that make the injector function to see how much power is going to them (using a multimeter). Now check the wires on the injector that is not working and see if you have power there. If you do then you have a bad injector. I don't think you do since you said that you switch wires and you are getting fuel at that injector. Check your wiring harness for shorted out wires. It doesn't make sense for one side to be working and the other not to be. I don't think it is a problem with your ECU, but it may be. See what colors the wires are going to your injectors and trace them back to the ECU, a wiring diagram would help. You need to check to see if you are getting power from the control module to the harness. I believe, however, you are experience a shorted out wire somewhere in the harness. That is where I would start. If you confirm you are getting power to the control module, but you are losing it somewhere in the harness it may be easier to just run a new set of wires instead of tearing apart the harness.

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Fuse box


Wiring relays and connections – all modelsRelays (typical)

1 Vacant
2 Intake manifold preheating relay (carburettor models) or fuel
pump relay (injection models)
3 Seat belt warning system relay
4 Gearshift indicator control unit
5 Air conditioner relay
6 Dual tone horn relay
7 Relay for foglights and rear foglight
8 Relief relay for X contact
10 Intermittent wash/wipe relay
11 Rear window wiper relay
12 Turn signal flasher or trailer towing warning relay
13 Seat belt warning system (interlock) or rear window, driving
lights and oil pressure warning relay
14 Window lift or seat belt warning system relay
15 Headlight washer relay
16 Control unit for idling speed increase
17 Fuse for rear foglight
18 Control unit for coolant shortage indicator
19 Thermo fuse for window lifters
20 Switch unit for heated driver’s seat
21 Switch unit for heated passenger’s seat
22 Switch unit for overrun cut-off
23 Vacant
24 Vacant
Relays are symbolised as a number in a black box
Not all relays are fitted to all models
Connections
A Multi-pin connector (blue) for dash panel loom
B Multi-pin connector (red) for dash panel loom
C Multi-pin connector (yellow) for engine compartment loom left
D Multi-pin connector (white) for engine compartment loom right
E Multi-pin connector (black) for rear wiring loom
G Single connector
H Multi-pin connector (brown) for air conditioner or wiring loom
K Multi-pin connector (transparent) for seat belt warning system
loom
L Multi-pin connector (black) for lighting switch terminal 56 and
dip and flasher switch terminal 56b (carburettor models) or
multi-pin connector (grey) for dual tone horn (injection models)
M Multi-pin connector (black) for lighting switch terminal 56 and
dip and flasher switch terminal 56b (injection models)
N Single connector for separate fuse (manifold heater element)
P Single connector (terminal 30)
R Not in use
Fuse colours
Blue 5A
Green 30A
Red 10A
Yellow 20A

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please rate me solved...thanks

DTC P0411/16795: SECONDARY AIR SYSTEM - INCORRECT FLOW DETECTED
Test Requirements
Ensure all fuses are okay, battery voltage is at least 11.5 volts, all electrical accessories are off, A/C is off.
Ensure engine is mechanically sound.
Test Procedure

NOTE
Secondary air system is activated by ECM and blows air into exhaust pipe
upstream of catalytic converter for 100 seconds during a cold start, 41-91°F (5-
33°C). Engine must be cold to perform following test procedure.

1. Ensure fuse and secondary fuse (secondary fuse is 40 amp and is located in fuse holder on top of battery)
are okay. Check hoses and components of Secondary Air Injection System, for damage, loose fit and
improper installation, check vacuum hoses for Secondary Air Injection System. Repair as necessary.
Erase DTC memory. Verify repair. If DTC does not reset, test is complete. Perform ECM relearn
procedure. See TEST DRIVE RELEARN PROCEDURE .
2. Remove engine cover. Disconnect pressure hose from Secondary Air Pump Motor (V101), by pressing
buttons on hose connector. See Fig. 33 . Using scan tool, check Secondary Air Pump Motor (V101) in
scan tool Output Diagnostic Test Mode (Secondary Air Pump Relay activation mode). See OUTPUT
DIAGNOSTIC TEST MODE .
3. Secondary Air Pump Motor (V101) should run in intervals and air should exit pump at hose connection.
If Secondary Air Pump Motor (V101) is okay, go to step 7 . If motor runs and no air exits secondary air
pump motor, replace faulty Secondary Air Pump Motor (V101). Erase DTC memory. Verify repair. Test
is complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE . If
secondary air pump motor does not run, go to next step.
4. Disconnect Secondary Air Pump Motor (V101) harness connector, install LED test light at secondary air
pump harness connector terminals. Turn ignition on. Using scan tool, activate Secondary Air Pump Motor
(V101) in scan tool Output Diagnostic Test Mode (Secondary Air Pump Relay activation mode). See
OUTPUT DIAGNOSTIC TEST MODE . LED test light at Secondary Air Pump Motor (V101) harness
connector should flash. If LED test light at Secondary Air Pump Motor (V101) harness connector does
not flash, go to next step. If LED test light at Secondary Air Pump Motor (V101) harness connector
flashes, replace faulty Secondary Air Pump Motor (V101). Erase DTC memory. Verify repair. Test is
complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE .
5. Using DVOM check resistance of Secondary Air Pump Motor (V101) wiring. See appropriate WIRING
DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS. Resistance should
be a maximum of 1.5 ohms for each reading. Check wiring for short circuit to one another in Secondary
Air Pump Motor (N101) harness connector. Repair as necessary. Erase DTC memory. Verify repair. Test
is complete. Perform ECM relearn procedure.
Secondary Air Pump Motor (N101) wiring is okay, go to next step.
6. Check Secondary Air Pump Relay (J299) and Secondary Air Pump Relay (J299) wiring. See DTC
P0418/16802: SECONDARY AIR PUMP RELAY (J299), MALFUNCTION . Repair or replace as
necessary. Erase DTC memory. Verify repair. Test is complete. Perform ECM relearn procedure. See
TEST DRIVE RELEARN PROCEDURE .
7. Disconnect vacuum hose from Secondary Air Injection Valve (N112) and disconnect pressure hose from
secondary air pump motor, press buttons on pressure hose connector to disconnect pressure hose. See Fig.
34 . Blow lightly into disconnected pressure hose, Combi-Valve should be closed. Connect hand vacuum
pump to disconnected vacuum hose and apply vacuum to Combi-Valve, Combi-Valve should open. If
Combi-Valve opens when vacuum is applied, Combi-Valve is okay. Go to next step. If Combi-Valve
does not open when vacuum is applied, replace faulty Combi-Valve. Erase DTC memory. Verify repair.
Test is complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE .
8. Check Secondary Air Injection Valve (N112). See DTC P0412/16796: SECONDARY AIR
INJECTION VALVE (N112), ELECTRICAL CIRCUIT MALFUNCTION . Repair as necessary.
Erase DTC memory. Verify repair. Test is complete. Perform ECM relearn procedure.
NOTE: Do not use compressed air to check Combi-Valve.
2000 Volkswagen Passat GLS
2000 ENGINE PERFORMANCE Self-Diagnostics - 1.8L Turbo

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