Nov 142018
 

 Toyota Corolla

My car was hit on the left rear side while parked. The other car was parked behind me and was pulling out and hit my car. The damage to the body was repaired. After getting my car back I notice the steering wheel is turned slightly to the right even if the tires are straight. I don’t hear any grinding noises or any other kind of noises when I turn left or right. The brakes and engine work fine. The engine light is not on or any other warning light. I have driven it on the freeway and on the street. I don’t notice any problems. Is is safe to drive the car? What needs to be done to repair it? Thanks.


A front wheel or four wheel alignment would be the repair needed. During the alignment the discovery of a damaged part may come to light.

Nov 132018
 

This past Monday on my way to work, my car started bucking and the check engine light started flashing. I checked the code, it was P0301, Cylinder 1 misfire. Since then I have…

First I Changed the Ignition Coil Cylinder 1
Then I Changed the Spark Plug Cylinder 1
Changed the Fuel Injector Cylinder 1
Performed a Compression test Cylinder 1. Passed 185 psi
Visually inspected the wire harness
Visually inspected the vacuum hoses
Swapped the ECU

About 2 months, ago I installed a new fuel pump, fuel filter and pressure regulator.

When I first start the car, it runs fine. While it is still in park, I can rev ’til the cows come home without issue. When I put the car in gear and drive for a few seconds, I get the Flashing CEL and Misfire code(p0301 only) comes back every time. Also, I can feel the car missing, so I know its not an erroneous code. What should I try next?


I would recommend checking for intake manifold gasket leaks. It is a common failure that may cause a misfire problem. I have provided a diagnostic chart to help assist you.

Code P0301 Diagnostic Chart

P0301 Diagnostic Chart - 2009 Toyota

Nov 082018
 

Ford F150

I’ve been dealing with a parking brake light always on. We changed all my sensors and re soldered the wiring harness at the instrument cluster. I follow the wire all the way to the parking brake sensor and still cant find where the problem could be.


Parking brake light always on

You the provided wiring diagram to help diagnose your problem area.

*NOTE – the brake light will also illuminate when the brake fluid level is low or brake fluid level sensor is sticking. It will also illuminate if the park brake is not released completely. Sometimes this requires lifting up a bit on the park brake.

Parking Brake Light Switch wiring diagram – 2007 Ford F150

parking brake light wiring diagram 2007 Ford F150

 

Nov 042018
 

2010 Mercedes-Benz E350

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
  • Bluetooth 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)

 

Nov 042018
 

Dodge Grand Caravan

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.

Oct 252018
 

Nissan Titan

Have code 1273…Air fuel sensor…Where is it located and how to change?


Nissan Code P1273

Code P1273 Description:

Air Fuel Sensor 1 Heater Bank 1

Code P1273 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. HO2S sensor contamination/damaged

Air Fuel Sensor Location

  • Sensor 1 Bank 1 – at left rear of engine (F65)
  • Sensor 1 Bank 2 – at right rear of engine compartment (F5)

Air Fuel Sensor Location Diagram

A closer look under the hood gives you a better view of the exact location of the A/F sensor.

A/F sensor location diagram

How to change Air Fuel Sensor

  1. Remove harness connector of air fuel ratio A/F sensor
  2. 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!

Shop Automotive

 

> > Need more, access a 2004 Nissan auto repair manual now!

Oct 252018
 

2005 GMC Yukon

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.

Body Control System Description and Operation

BCM Functions

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:

  • Audible warnings
  • Automatic door locks
  • Automatic headlamp control
  • Interior lighting
  • 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

Engine Running

Sampled Ignition Signal State

Accessory

Ignition 1

Ignition 0

OFF Off-Awake or RAP No Inactive Off Off
UNLOCK Unlock or RAP Unlock No Inactive Off On
ACC Accessory No Active Off On
ON Run No Active On On
START Crank No Inactive On On
ON Run Yes Active On On

Fail-safe Operation

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

Introduction

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.

Important

The following procedures must be followed:

  1. BCM Programming
  2. Programming Theft Deterrent System Components, if equipped with Passlock System.

Programming the BCM

Important

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

Important

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.

Important

After programming, perform the following to avoid future misdiagnosis:

  1. Turn the ignition OFF for 10 seconds.
  2. Connect the scan tool to the data link connector.
  3. Turn the ignition ON with the engine OFF.
  4. Use the scan tool in order to retrieve history DTCs from all modules.
  5. Clear all history DTCs.

> > Need more, access a 2003 GMC auto repair manual now!

Oct 142018
 

2010 Chavy Impala

My automatic headlight won’t shut off.


This is common of a sticking relay. You will want to look for the DRL Relay. DRL = Daytime Running Lights.

DRL Relay Location

The DRL Relay is located in the underhood fuse block on the right side of the engine compartment. Look under the lid of the fuse block for exact location diagram.

Daytime Running Lamps (DRL)/Automatic Headlamp System

Daytime Running Lamps (DRL) can make it easier for others to see the front of your vehicle during the day. Fully functional daytime running lamps are required on all vehicles first sold in Canada.

The DRL system makes the low-beam headlamps come on at a reduced brightness when the following conditions are met:

  • The ignition is in the ON/RUN position.
  • The exterior lamps control is in AUTO.
  • The engine is running.

When the DRL are on, the regular headlamps, taillamps, sidemarker, and other lamps will not be on. The instrument panel and cluster will also not be lit.

The headlamps automatically change from DRL to the regular headlamps depending on the darkness of the surroundings. The other lamps that come on with the headlamps will also come on.

When it is bright enough outside, the headlamps will go off and the DRL will come on.

The regular headlamp system should be turned on when needed.

Do not cover the light sensor on top of the instrument panel because it operates the DRL.

Oct 112018
 

Save at the Pump

These days with the Economy driving Prices up the consumer needs to watch every penny. In Some households we are seeing the amount of money being spent on gas becoming greater than the house payment.

Luckily for us the fuel retailers are offering incentives to those who frequent there fueling stations. For example, you can pick up a speedy rewards card form Speedway or a U-Drive Card from United Dairy Farmers. How it saves you money is up to you. If you add a carwash at UDF, they will instantly knock off $.10 per gallon of gas. Buy 2 gallon of milk and they add the discount. But some ice cream get a discount added. All your discounts can be accumulated and used at your next purchase at the pump.

So just for buying the things you already buy anyway, they are saying thank you at the gas pump. Its nice to be able to save some money anyway you can and when you already are buying gas, why not save some there too. So take advantage of these offers and you will save money at the pump.

No Sign Up Fees

  • Earn every time you use the card
  • No annual fees
  • Points and discounts accumulate

Example Card Image:

gas card

Oct 112018
 

Jump starting a car

The time will come if it hasn’t already that you will need to jump start your car. Knowing the best way to jump start your car can be very useful and save you time. You Will need to make sure all the battery connections are clean so your jumper cables can make a good connection. You can use a wire brush or the if you have some hot coffee or tea handy, pour it on. This will eliminate the majority if any corrosion around the area. Now your ready to attach the jumper cables and in a specific order.

  1. Attach one red cable to the positive of the dead battery
  2. Connect the other end of that same cable to the positive of the good battery
  3. Attach one black cable to the negative of the good battery
  4. Connect the other end of the black cable to a good ground in the engine compartment of the dead battery. Clip it to a strut tower bolt, frame or alternator bracket.

jump start a car

Things you might need when jump starting a car

  • Eye protection
  • Rubber gloves
  • A hand towel or rag
  • Wire brush
  • Hot water or coffee
  • Jumper cables