AfterMarketNews AfterMarketNews Auto Care Pro AutoCareCareerHub Brake&Frontend BodyShopBusiness Counterman EngineBuilder Fleet Equipment ImportCar Motorcycle & Powersports News Servicio Automotriz Shop Owner Tire Review Tech Shop Tomorrow's Tech Underhood Service Speedville

Oldsmobile: Engine Overheats, Replaced Engine Coolant Thermostat

Model: 2003 Oldsmobile Alero Complaint The customer states the engine is overheating. Sometimes DTC P0125 Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control will be present. Cause Observed the engine coolant temperature...

Read more...

Avoid Alternator Returns, Make Peace With Your Parts Suppliers

If the charging voltage is low, or the alternator isn’t putting out enough current to keep up with the electrical loads that are placed upon it, don’t automatically assume the starter or alternator is bad and needs to be replaced (unless you’re...

Read more...

Solving Carbon Deposits In Direct Fuel Injection Engines

Symptom: Misfire codes, stumbling and suspicious fuel trim numbers. On a scan tool, the engine may show a loss in volumetric efficiency. The driver may complain about a loss of power, poor fuel economy and hard starts. Cause: Carbon deposits on...

Read more...

10 Alignment Tips to Help You See Past The Angles

1. Talk to the driver. Always ask questions at the time the vehicle is written up. Find out why customers think they need an alignment. 2. Take notes. Nothing is worse than a repair order that just says “perform alignment” or “needs alignment.”...

Read more...

What to Know About Modern Air Ride Systems

GM, Ford, BMW and just about every other manufacturer has a 10-year-old vehicle on the road with an air ride suspension at the rear or at all four corners. These systems could be as exotic as a Land Rover Defender or as common as a Ford Explorer....

Read more...

Slipping Clutch: Improper Flywheel Step and Cup Dimensions

Slipping is one of the most common clutch related concerns. A slipping condition can occur after years of service or immediately after installation of a new clutch and is caused by various scenarios. One of the most commonly seen and easily prevented...

Read more...

Vehicle Unit Increase; Import-Rich VIO Are A Boon for Import Specialists

Need a dose of good news for your business? Then hear this: The influx of new vehicles in the market will lay the foundation for bountiful aftermarket service and repair opportunities. And, with import vehicle sales continuing an ­upward climb, there...

Read more...

Honda: Engine Shuts Off, But Power Mode Stays In ‘On’ or ‘Accessory’

Applies To: Honda Insight models with one-push start Customers might complain that when they shift into park and shut off the engine, that the power mode stays in On or Accessory. Honda says the culprit could be a misadjusted shift cable. If the...

Read more...

Import Oil Specification Primer

As engine technology has evolved and fuel efficiency standards have tightened, oil specs have increased in importance. Using the wrong viscosity could set a fault code in some applications or interfere with the normal operation of the variable valve...

Read more...

Hunter Releases New Technical and Training-Specific Channel on YouTube

Hunter Engineering Company has launched a new technical and training channel on YouTube, called the Hunter Learning Channel. The Hunter Learning Channel features extensive training video playlists for every product category manufactured by Hunter....

Read more...

Ingersoll Rand Becomes ‘Official Power Tools of NASCAR’

NASCAR and Ingersoll Rand have announced a multi-year partnership designating Ingersoll Rand as the “Official Power Tools of NASCAR.” The multi-faceted agreement also designates Ingersoll Rand as an Official Partner of the International Motorsports...

Read more...

2015 Vehicle Lifting Points Guide Now Available

The Automotive Lift Institute, Inc. (ALI) announces the availability of the 2015 edition of ALI’s “Vehicle Lifting Points for Frame Engaging Lifts.” This updated guide is a quick-reference single-source manual for lifting point information as...

Read more...

Print Print Email Email

By Eric Seifert
ALLDATA Automotive Technical Editor

Darrel’s wife has a 2002 Mitsubishi Diamante that she uses for shuttling around her real estate clients. Recently, the Diamante’s TCL (Traction Control Lamp) came on. Concerned for his wife’s safety, Darrel brought the car by for an inspection. We retrieved a code 72, but could not come up with a cause for the code. I talked to a friend who works for a Mitsubishi dealer and he turned me on to the solution.

Traction Control Diagnostic Trouble Code 72 or 73, “Vacuum Ventilation Control Solenoid Circuit System” may set, and the TCL light may come on, due to excessive ignition signal interference affecting the voltage in the TCL solenoid valve harness. This may also cause MFI DTC P1101 or P1102 to set in the PCM. To eliminate this condition, install a noise filter in the wiring harness at the distributor connector as described in the repair procedure.

The repair will require one Mitsubishi noise filter P/N MM902517.

Applicable Vehicles:
2001-2002 Diamante models equipped with TCL.

Repair Procedure:
1. Remove the plastic engine cover.

2. Disconnect the 7-pin connector from the distributor. See Figure 1.

3. Use a sharp blade to open the plastic harness covering behind the main loom to expose the wires.

4. At pin 2, cut the white wire 2” from the connector. See Figure 2.

5. Install a noise filter as shown in Figure 3. Be sure that the wires are properly positioned before soldering, and that a clean, strong joint is formed.

a. Solder the black wire to the connector side of the harness.
b. Solder the white/red wire to the harness lead.
c. Install heat shrink tubing over the soldered areas for insulation.

6. Reinstall the plastic harness covering and tape securely for a watertight seal.

7. Position the noise filter between the vacuum control valve bracket and the bolt as shown in Figure 4.

8. Reconnect the distributor connector.

9. Reinstall the plastic engine cover.

Eric Seifert is an ASE certified Master Technician and Engine Machinist, with 20 years of independent shop and parts store experience.

For additional information, visit www.alldata.com.

The following two tabs change content below.

AutoCarePro Team

Latest articles from our other sites:

Oldsmobile: Engine Overheats, Replaced Engine Coolant Thermostat

Model: 2003 Oldsmobile Alero Complaint The customer states the engine is overheating. Sometimes DTC P0125 Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control will be present. Cause Observed...More

Avoid Alternator Returns, Make Peace With Your Parts Suppliers

If the charging voltage is low, or the alternator isn’t putting out enough current to keep up with the electrical loads that are placed upon it, don’t automatically assume the starter or alternator...More

10 Alignment Tips to Help You See Past The Angles

1. Talk to the driver. Always ask questions at the time the vehicle is written up. Find out why customers think they need an alignment. 2. Take notes. Nothing is worse than a repair order that just...More

What to Know About Modern Air Ride Systems

GM, Ford, BMW and just about every other manufacturer has a 10-year-old vehicle on the road with an air ride suspension at the rear or at all four corners. These systems could be as exotic as a Land...More

Vehicle Unit Increase; Import-Rich VIO Are A Boon for Import Specialists

Need a dose of good news for your business? Then hear this: The influx of new vehicles in the market will lay the foundation for bountiful aftermarket service and repair opportunities. And, with import...More

Honda: Engine Shuts Off, But Power Mode Stays In ‘On’ or ‘Accessory’

Applies To: Honda Insight models with one-push start Customers might complain that when they shift into park and shut off the engine, that the power mode stays in On or Accessory. Honda says the culprit...More

Hunter Releases New Technical and Training-Specific Channel on YouTube

Hunter Engineering Company has launched a new technical and training channel on YouTube, called the Hunter Learning Channel. The Hunter Learning Channel features extensive training video playlists for...More

Redline Detection Unveils New HD PowerSmoke

Redline Detection, a provider of OEM-approved automotive diagnostic leak detection equipment, recently unveiled the HD PowerSmoke for heavy-duty trucks, buses, commercial, industrial and agricultural applications...More