I did a scan for codes with an OBDII Scantool for Mercedes only N code came up a10d00 saying power supply too low(stored) N. The next one read 9a4f13 right KEYLESS GO has a malfunction. THERE IS N OPEN CIRCUIT. CURRENT N STORED HOW DO I FIX IT
Did not find any reference to the second code you mentioned. However, there is a Technical Service Bulletin out related to this code A10D00. It refers a wiring harness being damaged in the area of the roof frame. This could affect one or all of the following areas:
Overhead control panel nonfunctional
Multi-function camera nonfunctional or , malfunctions
TSB Reference Number: LI54.18-P-048131, Date of Issue: November 20, 2009 – The entire TSB along with step by step corrective procedures and pictures are included in each manual. – Purchase Manual
Fault Code A10D00
Mercedes-Benz Code A10D00 Description – The power supply is too low.
Control Unit: MFK – Multi-function camera (A40/11)(MPC212)
2003 Dodge Grand Caravan won’t turn over. New battery, new starter. All fuses and cables are good, ignition switch is good, the engine is not locked up. A few weeks ago the van would start fine then randomly shutoff going down the road. Then it could take between 2 minutes and 2 days to restart. It hasn’t started in a month now. What else could be the problem?
Sounds like a loose ground connection. But instead of jumping to that conclusion we have developed a step by step diagnostic chart just for this occasion.
Sensor 1 Bank 2 – at right rear of engine compartment (F5)
A closer look under the hood gives you a better view of the exact location of the A/F sensor.
How to change Air Fuel Sensor
Remove harness connector of air fuel ratio A/F sensor
Remove the air fuel ratio A/F sensor is a 7/8 (22 mm) offset oxygen sensor socket.( the socket has a slot in one side to allow siding over the wiring harness.
Offset Oxygen Sensor Socket
Size: Common 6 point, 7/8 inch (22 millimeter) hex fits almost all oxygen sensors; 3/8″ drive for ratchets.
Design: This socket’s slotted design allows you to remove oxygen sensors with the wiring harness still attached, and the unique off set design of the T7822F Oxygen Sensor Wrench delivers maximum torque with maximum convenience! Made to increase torque on hard-to-remove O2 sensors and allows you to access tough spots, easily!
Instrument Cluster, Radio, Door Locks, and Windows quit working on my 2003 GMC Yukon XL SLT 4×4. Believe it to be in the BCM. Need schematics, Connector Charts, and Diagnostic connector Diagram to Help in Diagnosing. Thanks, Patches
Here is the information that I have including wiring diagrams. A blown fuse that is used by all systems described would be the first thing I would look for. And it would be the most common cause if they all went out at the same time. Since the vehicle is more than 10 years old, rusted ground connections may also be a factor.
The Body Control Module (BCM) performs multiple body control functions. The BCM can control devices directly connected to its outputs based on input information. The BCM evaluates this information and controls certain body control systems by commanding outputs on or off. The BCM control inputs can be:
Sensors and switches that are directly connected to the BCM
Class 2 serial data received from other control modules connected to the class 2 serial data link.
The BCM is also capable of controlling other vehicle systems that are not directly wired to the BCM. The BCM does this by sending specific messages on the class 2 serial data link. The control module capable of performing the required function will respond to the BCM message.
The BCM controls these functions:
Automatic door locks
Automatic headlamp control
Keyless entry (AUO option)
Passlock theft deterrent
Retained Accessory Power (RAP)
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the Body Control Module (BCM). The BCM uses 3 signals from the ignition switch. These are the Ignition 0, Ignition 1, and Accessory.
To determine the correct power mode the BCM uses:
The state of these signals
Next , the sequence of switch closures received by the BCM
Finally, the status of the engine run flag
The chart indicates the power modes detected and transmitted by the BCM:
Correct Ignition Switch Inputs
Ignition Key Position
Power Mode Parameter
Sampled Ignition Signal State
Off-Awake or RAP
Unlock or RAP Unlock
Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the BCM fail to send a power mode message. The fail-safe plan covers modules with discrete ignition signal inputs as well as those modules using exclusively serial data control of power mode.
Serial Data MessagesThe modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid BCM message until they receive the engine status from the PCM. If the BCM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is true, indicating that the engine is running, the modules fail-safe to “Run”. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is false, indicating that the engine is not running, the modules fail-safe to “OFF-AWAKE”. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition SignalsThose modules that have discrete ignition signal inputs also remain in the state dictated by the last valid BCM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, B+, the modules will fail-safe to the “RUN” power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to “OFF-AWAKE”. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Body Control Module Programming
The procedures below are designed to set-up the body control module (BCM) correctly during BCM related service. Before you start, read these procedures carefully and completely.
The following procedures must be followed:
Programming Theft Deterrent System Components, if equipped with Passlock System.
Programming the BCM
After the procedure is completed, the personalization settings of the BCM are set to a default setting. Inform the customer that the personalization must be set again.
Programming Theft Deterrent System Components
This procedure has to be performed only for vehicles equipped with Passlock System.
Perform the Programming Theft Deterrent System Components in Theft Deterrent after successfully finishing the Setup New BCM procedure. If the Programming Theft Deterrent System Components in the Theft Deterrent procedure is not performed after a BCM replacement, one of the following conditions will occur:
The vehicle will not be protected against theft by the PASSLOCK system.
The engine will not crank nor start.
After programming, perform the following to avoid future misdiagnosis:
Turn the ignition OFF for 10 seconds.
Connect the scan tool to the data link connector.
Turn the ignition ON with the engine OFF.
Use the scan tool in order to retrieve history DTCs from all modules.
The park/neutral switch is located on the transmission housing and provides an input to the powertrain control module (PCM) This will indicate that the automatic transmission is in Park, Neutral or a drive gear selection. This input is used to determine idle speed (varying with gear selection), fuel injector pulse width, ignition timing advance and vehicle speed control operation.
Check adjustment by starting the engine in Park and Neutral. Adjustment is OK if the engine starts only in these positions. Adjustment is incorrect if the engine starts in one but not both positions. If the engine starts in any position other than Park or Neutral, or if the engine will not start at all, the park/neutral position switch may be faulty.
Gearshift Adjustment Procedure
Shift transmission into Park.
Release cable adjuster lock (underneath the power brake booster) to unlock cable.
Slide cable eyelet off transmission shift lever.
Verify transmission shift lever is in Park detent by moving lever fully rearward. Last rearward detent is Park position.
Verify positive engagement of transmission park lock by attempting to rotate propeller shaft. Shaft will not rotate when park lock is engaged.
Slide cable eyelet onto transmission shift lever.
Lower vehicle and check engine starting. Engine should start only in Park and Neutral.
Lock shift cable by pressing cable adjuster clamp down until it snaps into place
I need a standard trailer wiring diagram for a auto trailer. The supply side has a 5 position plug. 1ground, 4 colored supply wires, trailer has two tail lights with brake light capability. I misplaced my instructions. Need help identifying colors of trailer connections.
The 5 wire diagram shows the addition of a wire for use on electric brakes or back up lights. Where as on the 4 wire diagram does not. Use the provided wiring diagrams below to assist you in your installation.
4 wire trailer wiring diagram
5 wire trailer wiring diagram
Towing Package Factory Wiring Harness
The trailer tow preparation wiring harness is connected to the body wire harness. It is located at the right and left outer rear lamp unit connections. After installation is complete, a trailer tow stop/turn relay is secured to the harness behind the rear bumper fascia just below each outer rear lamp unit. A trailer tow stop lamp relay is located on the underside of each outboard end of the rear bumper reinforcement behind the rear fascia. The four-way trailer tow connector is located near the center of the rear fascia.
B Body Code – Problem is antilock brake system, electronic suspension and steering systems.
2 MFG – Manufacturer Specific
3 IC Module 4X Ref Circuit Intermittent, No Pulses
4 Control Module Throttle Actuator Position Performance
0 Transmission Engaged At High Throttle Angle
Windows, Locks, 1 Mirror problem. Front Driver door controls, lock switch only locks/unlocks front driver’s door. Window switches only open/close driver’s side front & rear windows. Front Passenger door switches do NOT lock/unlock doors or open/close windows. Rear driver’s door window switch works. Rear Passenger door window switch does NOT open/close the window. Keyless entry remotes do NOT work (Batteries are good) Interior lights come on with all door except the front passenger side. Driver’s mirror does adjust, Passenger mirror does NOT adjust. All wires running into the front doors have passed a continuity test. I’m leaning towards the Front Passenger side door module. What do you think?
I have found over the years that the wiring harness in the door jam becomes damaged easily. This is more common than you might think on older vehicles. Not the rule but worth checking. It is quite possible that the door module may be faulty or both.
What would make my 1993 Honda Accord spark plug smell like diesel fuel?
Contaminated fuel. This is more common than you would expect. The same delivery trucks are sometimes used to transport different grades of fuel. Under normal operating procedures the tanks are flushed after each haul. This helps prevent contamination of diesel and regular grade fuels. When this step gets over looked there can be upwards of a 100 gallons being mixed in the next load.
When your fuel is contaminated the engine may struggle and have performance issues. The engine may “PING” on heavy acceleration. Though in the short term no damage should occur but if not corrected severe internal engine damage will. Feel free to drive that tank out and fill up at a different fueling station the go around. For large fuel tanks an Octane boost may be used to prevent engine ping.