I have lost power to the 240v hook up circuit,the fridge still works on the hook up voltage but the 3 pin sockets have failed,i have 240v coming in to the the van as the fridge and hot water heater are ok,test at a junction box under the seat and the voltage is ok there,is the a internal fuse our mcb somewhere?

Pin #16 ( in the connector where you hook up your code reader) battery voltage from fuse DIM / ALDL fuse DIM/ALDL Fuse
10 A
Dash Integration Module (DIM) and Data Link Connector (DLC)
location - under hood fuse box .
pins 4 & 5 are ground connections . What other thing's are you trying too hook up ? Does the vehicle start an run ?

Bad relay more then likely .
Power Window Operation
The power window system operates under the control of the accessory delay relay. The instrument cluster module (ICM) grounds the relay coil to provide power to the power window system & the radio .

Symptom Chart Condition Possible Sources Action

• All power windows are inoperative

• Fuse(s).
• Circuitry.
• Instrument cluster module (ICM).
• Accessory delay relay.
• Driver window control switch.

• Go To Pinpoint Test A .

The first step to diagnose this problem would be to hook up a factory scan tool an check for DTC'S - diagnostic trouble code's in the ICM . If no codes do pin point test A
Pinpoint Test A: All Power Windows Are Inoperative
Normal Operation Under normal operation the instrument cluster module grounds the accessory delay relay through circuit 1004 (LB/RD). Power is sent to the driver window control switch through circuit 400 (LB/BK) from the accessory delay relay. The driver window control switch is grounded through circuit 1205 (BK).

Possible Causes
• Fuse(s)
• Open in circuits 400 (LB/BK), 1205 (BK) or 1004 (LB/RD)
• Damaged accessory delay relay
• Damaged CJB
• Inoperative ICM
• Inoperative driver window control switch
• INPOINT TEST A: ALL POWER WINDOWS ARE INOPERATIVE Test Step Result / Action to Take A1 CHECK THE VOLTAGE TO THE DRIVER WINDOW CONTROL SWITCH - CIRCUIT 400 (LB/BK)
  • Disconnect: Driver Window Control Switch C504a.
  • Key in ON position.
  • Measure the voltage between driver window control switch C504a-6, circuit 400 (LB/BK) harness side and ground.
  • Is the voltage greater than 10 volts?
  Yes
  GO to A2 .
  
  No
  GO to A3 . A2 CHECK THE GROUND TO THE DRIVER WINDOW CONTROL SWITCH - CIRCUIT 1205 (BK)
  • Key in OFF position.
  • Measure the resistance between driver window control switch C504a-2, circuit 1205 (BK) harness side and ground.
  • Is the resistance less than 5 ohms?
  Yes
  INSTALL a new driver window control switch. REFER to Window Control Switch in this section. TEST system for normal operation.
  
  No
  REPAIR the circuit. TEST the system for normal operation. A3 CHECK THE ACCESSORY DELAY RELAY
  • Key in OFF position.
  • Disconnect: Accessory Delay Relay.
  • Carry out the accessory delay relay component test. Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  • Is the accessory delay relay OK?
  Yes
  GO to A4 .
  
  No
  INSTALL a new accessory delay relay. TEST the system for normal operation. A4 CHECK THE POWER TO THE ACCESSORY DELAY RELAY
  • Key in ON position.
  • Measure the voltage between ground and accessory delay relay socket pin 85 and pin 30 harness side.
  • Is the voltage greater than 10 volts?
  Yes
  GO to A5 .
  
  No
  REPAIR the power supply circuit or central junction box (CJB). TEST the system for normal operation. A5 CHECK CIRCUIT 400 (LB/BK) FOR AN OPEN
  • Key in OFF position.
  • Measure the resistance between driver window control switch C504a-6, circuit 400 (LB/BK) and accessory delay relay socket pin 87, circuit 400 (LB/BK) harness side.
  • Is the resistance less than 5 ohms?
  Yes
  GO to A6 .
  
  No
  REPAIR the circuit. TEST the system for normal operation. A6 CHECK CIRCUIT 1004 (LB/RD) FOR AN OPEN
  • Disconnect: Instrument Cluster Module (ICM) C220a.
  • Measure the resistance between accessory delay relay socket pin 85, and ICM C220a-5, circuit 1004 (LB/RD).
  • Is the resistance less than 5 ohms?
  Yes
  INSTALL a new ICM. REFER to Section 413-01 . TEST the system for normal operation.
  
  No
  REPAIR the circuit. TEST the system for normal operation
• If you don't understand any of this , your best bet mite be to have a qualified repair shop look at it .

In involved fuses #5 & #10 15 amp in main fuse panel

from Ford Service cd
http://www.fordcds.com/
Fault Code 12


Air Bag Deployment Circuit Drop in Battery Voltage


Circuit Description


Normal Operation

The diagnostic monitor measures the voltage at pin 13 of the diagnostic monitor connector. Voltage at pin 13 should be equal to battery voltage. If the voltage measured at pin 13 drops to less than 9 volts, the diagnostic monitor will flash out code 12.


Possible Causes

A drop in battery voltage at diagnostic monitor pin 13 can be caused by:

1.An open circuit that would prevent battery voltage from reaching diagnostic monitor pin 13.

NOTE:
If the instrument panel fuse and/or the power distribution fuse are blown, be sure to diagnose the system for possible causes 2 and 3 below.

2.A short to ground in Circuit 611 (W/O) or 612 (P/O) may result in a blown instrument panel fuse and/or power distribution fuse.

3.An internal short to ground within the safing sensor may result in a blown instrument panel fuse and/or power distribution fuse.

4.A problem in the charging system causing battery voltage to drop below 9 volts.

• 3 flashes - deactivator switch is open or circuit defective.
• • Flash code 3 - deactivator switch circuit failure
  • Central junction box (CJB) fuse 13 (20A).
  • Circuitry.
  • Deactivator switch.
  • Speed control servo.
  • Go To Pinpoint Test H .
  PINPOINT TEST H: FLASH CODE 3 - DEACTIVATOR SWITCH CIRCUIT FAILURE
• CONDITIONS DETAILS/RESULTS/ACTIONS H1 CHECK THE DEACTIVATOR SWITCH CIRCUITRY
  Speed Control Servo C122
  Measure the voltage between the speed control servo C122 pin 9, circuit 307 (BK/YE), harness side and the speed control servo C122 pin 10, circuit 57 (BK), harness side.
  
  • Is the voltage greater than 10 volts?
  Yes INSTALL a new speed control servo. REFER to Speed Control Servo in this section. REPEAT the self-test.
  
  No GO to H2 . H2 CHECK DEACTIVATOR SWITCH POWER
  Deactivator Switch C1025
  Measure the voltage between the deactivator switch C1025, circuit 10 (LG/RD), harness side and ground.
  
  • Is the voltage greater than 10 volts?
  Yes GO to H3 .
  
  No REPAIR the circuit. REPEAT the self-test. H3 CHECK CIRCUIT 307 (BK/YE) FOR AN OPEN Measure the resistance between the speed control servo C122 pin 9, circuit 307 (BK/YE), harness side and the deactivator switch C1025, circuit 307 (BK/YE), harness side.
  
  • Is the resistance less than 5 ohms?
  Yes INSTALL a new deactivator switch. REFER to Speed Control Deactivator Switch in this section. REPEAT the self-test.
  
  No REPAIR the circuit. REPEAT the self-test.

Have to check powers and ground curcuit.

Idle Air Control Motor Circuit Malfunction Possible Causes Setting Conditions • Stepper motor connector is damaged (check pins for damage, and moisture) • Stepper motor Coil 1, 2, 3 or 4 circuit is open or shorted to ground • Stepper motor coil circuit(s) is shorted to voltage • Stepper motor has failed • PCM has failed Engine running; system voltage over 11.5v, and the PCM detected an incorrect voltage on one or more of the IAC motor circuits for 2.75 seconds with the motor enabled.

The tail light circuit is separate from the brake and turn signal circuit. Either the bulb socket has gone bad or a wire has flaked out. Check for voltage at the socket on either pin base when you have your parking lights on. If voltage is present, it is either a worn socket failing to hold the bulb properly, or another bad bulb. If no voltage, determine which wire on the other side is tail light power, and run a new wire across to the side that isn't working and connect it to provide power.

Tire compressor probably draws too much current for the socket. Are you sure it is a cigarette lighter socket? Some sockets are just to provide accessories 12v. Did a cigarette lighter come with this socket? True cigarette lighter sockets are generally fused at 25 or 30 Amps

That plug is used for 220 volt circuits in the US.

Symptoms look like thermal instability of either the cam shaft position sensor or the crankshaft position sensor. Sometimes these sensors can fail by outputting reduced voltage with temperature increase so they appear to works fine at start up but fail when the engine reaches running temperature. I think the the cam sensor is Hall effect and the cam sensor magnetic:

2 pin socket (magnetic - sine wave output). One pin is 'ground' the other is 'signal'. A voltmeter set to 2 volts AC (note) should measure a signal in the 0.2 to 2 volts range on the 'signal' pin.

3 pin socket (Hall effect, magneto - square wave form output). One pin is 'reference' (5volts), one pin is 'ground' and the third pin is 'signal'. A DC (note) voltage should be detectable in the 0.5 to 1.5 volt range from the 'signal' pin.
It is important that the voltage measurement take place at start up when the engine is cold and again, 20 minutes later, when the engine has fully warmed up to operating temperature. These devices do not often fail and are expensive if purchased from the the Mercedes dealership, shop around on-line or try a breakers yard.

no you need to know the wattage of the item you are trying to power. To find the wattage of the item you are trying to power is simple. Some will say directly others will give you the amps (ie. .5amps, 1.2 amps.) you take the amps and multiply it by the volts that it says. All this info is on the item you are trying to power with the inverter. The answer is what it will take to power that item. example .5amps x 240v = 120 w so in this instance you would need an inverter that would produce at least 120w so in this case the 150w inverter would work. Good Luck, have a grt day