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

Do Training, Technology And Parts Sourcing Issues Keep You Up At Night?

We often hear that the things that keep shop owners awake at night pertain to profitability, productivity, training, keeping up with technology, shop operations/expenses and parts quality/availability. This month, we hear directly from one of your...

Read more...

Top 10 Automotive Repair Shop Pet Peeves

No two days are the same for the owner of a repair shop. Every day brings its unique set of challenges to overcome, but, for the most part, the day progresses along and one day passes to the next. But, there are those occasions when certain daily activities...

Read more...

Keeping Counterfeit Parts Off The Road

One constant refrain in the technical features on AutoCarePro and all of our sister sites, is the need to use quality parts — and trust where that part is coming from. Failing to do so puts your customer and your shop’s reputation at risk. But...

Read more...

Engine Coolant Temperature Diagnostics

While old-school cooling system service often ­focused on coolant leaks and overheating engines, let’s begin thinking “new-school” by looking at modern cooling systems through the eyes of the engine coolant temperature (ECT) sensor. Coolant temperature...

Read more...

Volkswagen: Parking Indicator Sounds Off with No Obstacle

Customer complains that the parking assistance issues warning sounds for both the front and/or rear of vehicle with no obstacle in range. Water intrusion into sensor holders is causing corroded plug contacts and sensor electrical pins, which results in...

Read more...

Volkswagen: Unnecessary Electric Coolant Fan Replacements

Model: 2006 Volkswagen Jetta Sedan Customer concerns of “electric coolant fans continue to run after the ignition is switched off” are resulting in unnecessary coolant fan replacements. It is considered normal operation for the electric coolant...

Read more...

Ford Fusion Alignment Spec (2005-‘13)

Millions of Ford ­Fusions were sold in the U.S. between 2005 and 2013. When it comes to alignments, it is critical to diagnose the customer first, to find out if their Fusion drifts or pulls, and then to check all of the possibilities for the complaint...

Read more...

Nissan Titan Brake Job

The Titan is Nissan’s full-size pickup. The Titan has had no major brake problems or recalls, and the brakes are fairly easy to service. Nissan had a few teething problems with brake judder on 2004-‘06 models, but this was corrected with better...

Read more...

The Case for On-Car Wheel Balancing and Wheel-to-Hub Indexing

Off-car wheel balancers do an excellent job of measuring dynamic unbalance — static and couple — and many also measure tire/wheel uniformity, radial runout or calculate radial force variation (RFV) to help eliminate vibration and verify the assembly...

Read more...

Educating Drivers, Technicians and Service Advisers with Dill’s New TPMS Videos

Dill Air Controls has launched its new TPMS training and educational videos, supporting three audiences — consumers, technicians and service advisers. The consumer videos are available in shortened versions, and are positioned for the customer waiting...

Read more...

Top 5 Tools: Kenny Younkins, Ken’s Auto Service Center

Kenny Younkins, owner Ken’s Auto Service Center Akron, OH While Ken first said his favorite tool is his fishing rod, he said in the shop he prefers these five:   Snap-on 3/8” Drive Impact Wrench Mastercool Brake Flaring Kit Mitchell...

Read more...

Mitchell 1 Enhances Quick Links and Printing Functions in Latest Release of ProDemand

Mitchell 1 announces it has made several important enhancements in the latest release of its ProDemand repair, diagnostic and maintenance information program as a direct response to customer feedback. The implemented changes include an expanded Quick...

Read more...

Home Electrical Battery Tech Tip: Honda Engine Won’t Start? Check for Loose Alternator Bolts

Print Print Email Email

Applies to: 2001-’04 Honda Civic

Got a 2001-’04 Civic in your shop with any or all of these symptoms?

• The engine cranks but it won’t start.

• The MIL comes on.

• The immobilizer indicator blinks while the ­engine cranks.

• The HDS can’t communicate with the ECM/PCM.

Check for loose alternator bolts. If these bolts are loose for any reason such as the alternator was R&R’ed, or an accessory A/C was installed on a DX model at the dealership, the alternator can overcharge and fry the ECM/PCM.

If the alternator bolts are loose, tighten them and try restarting the engine. If the engine still won’t start, then check the ECM/PCM connector for battery voltage and ground. If you’re reading battery voltage and ground at the connector, then replace the ECM/PCM. Keep in mind, though, any ECM/PCM damage that’s caused by loose alternator bolts from A/C installation or body repair isn’t covered under warranty.

Courtesy of Honda Service News via ALLDATA.

The following two tabs change content below.
Underhood Service Staff Writers

Underhood Service Staff Writers

Underhood Service Staff Writers

Latest posts by Underhood Service Staff Writers (see all)

Latest articles from our other sites:

General’s New PalmScope Is Full-Featured Video Inspection System

The new PalmScope (DCS950) from General Tools & Instruments is a full-featured pocket-sized video inspection system that’s also built to survive the harsh environments of vehicle maintenance and...More

Educating Drivers, Technicians and Service Advisers with Dill’s New TPMS Videos

Dill Air Controls has launched its new TPMS training and educational videos, supporting three audiences — consumers, technicians and service advisers. The consumer videos are available in shortened versions,...More

Engine Coolant Temperature Diagnostics

While old-school cooling system service often ­focused on coolant leaks and overheating engines, let’s begin thinking “new-school” by looking at modern cooling systems through the eyes of the engine...More

Volkswagen: Parking Indicator Sounds Off with No Obstacle

Customer complains that the parking assistance issues warning sounds for both the front and/or rear of vehicle with no obstacle in range. Water intrusion into sensor holders is causing corroded plug contacts...More

Diagnostic Strategies For Solving TPMS Errors

The first step in any diagnostic strategy is to figure out whether or not your customer's vehicle actually has a TPMS problem. Any number of things can cause the TPMS warning light to come on or flash....More

Ford Fusion Alignment Spec (2005-‘13)

Millions of Ford ­Fusions were sold in the U.S. between 2005 and 2013. When it comes to alignments, it is critical to diagnose the customer first, to find out if their Fusion drifts or pulls, and...More

Streamlight Launches Compact ProTac 1AAA Light


Streamlight Inc. has introduced the ultra-lightweight ProTac 1AAA, the latest addition to the ProTac series of tactical handheld lights. The new light uses one easily sourced AAA alkaline battery, and...More

Millermatic 190 and 141 MIG Welders Offer Improved Ease-of-Use and Arc Performance

The new MIG and Flux-Cored-capable Millermatic 190 and Millermatic 141 MIG welders (replacing the Millermatic 180 Auto-Set and Millermatic 140 Auto-Set MIG welder models) offer users improved portability,...More