Rick's Free Auto Repair Advice

Posts Tagged: wiring diagram

No crank no start Taurus

No crank no start Taurus If run into a situation where you turn the key and the starter doesn’t crank the engine, get out your test light and start checking for voltage at these locations. Click on the jpg to download the wiring diagram of the starter circuit. Here’s the power flow From Battery + to #107 40A fuse in the battery junction box. Power flows through fuse #107 to ignition switch and terminal 87 in the starter relay socket. When IGN switch is turned to START, power flows to … Read More

Dome lights stay on

Interior lights stay on If you own a GM vehicle and your interior lights stay on even with the doors closed, you may have a faulty door switch or a faulty body control module. Refer to this wiring diagram to see how GM uses a computerized body control module (BCM) to control lighting. Click on the jpg to download a full size PDF. © 2012 Rick Muscoplat

Wipers don’t work Caravan

How to fix Wipers that don’t work Caravan Don’t you long for the old days when a switch actually controlled the device you wanted to turn on and off? Well, kiss those days goodbye. If you own a Dodge Grand Caravan, or other Chrysler products, and have a problem with the wipers or other similar accessories, you must first understand how these systems work. First, the switch does NOT connect or disconnect power to the accessory. Its job is to provide a signal to the body control module (BCM), informing … Read More

P1762 Dodge Durango

Fix code P1762 Dodge Durango If you own a Dodge Durango and have a P1762 trouble code Gov Press Sen Offset Volts Too Low or high, you may be tempted to throw in a new sensor. Whoa partner! Before you do that, check the downstream oxygen sensor (the one AFTER the catalytic converter). That sensor has a heater in it and if the heater shorts to voltage, it’ll feed back into the Powertrain Control Module and bleed over to the governor pressure circuit. That’ll trick you into thinking the governor … Read More

No crank no start – Chrysler product

No crank no start – Chrysler product Alright, so you’re turning the key and getting No crank no start. Well, in the old days, the power ran from the ignition switch down to the starter solenoid and then to the starter motor. There’s no way car makers are gonna make it that simple for you. Every car maker has a different setup and it’s not even the same from model to model within the same maker. But I’ll walk you through a typical Chrysler starting setup. Click on the PDF … Read More

No crank no start no click – GM

No crank no start no click – GM GM has issued a technical service bulletin (TSB) #PIP4208 to deal with a no crank, no start, no click situation on the following vehicles: 2006-2008 Chevrolet Cobalt 2006-2008 Chevrolet HHR 2006-2008 Chevrolet Malibu 2007-2008 Pontiac G5 2007-2008 Pontiac G6 2006 Pontiac Pursuit (Canada Only) 2006-2008 Pontiac Solstice 2006-2007 Saturn ION 2006-2008 Saturn Sky The starting procedure on these vehicles is fairly complicated and the root problem lies in the ignition switch. The ignition switch does NOT directly control the starter motor like … Read More

no start no crank no click – GM

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that. In the old days, power flowed through the ignition switch and down to the starter solenoid. Not anymore. The ignition switch now talks to the body control module (BCM) and it’s the BCM that initiates one of … Read More

No crank no start Ford

Fix a no crank no start on Ford No crank no start Ford issues are pretty easy to diagnose. Click on the illustration below and download the PDF wiring diagram of a typical Ford starting system. You’ll see that the system consists of a fuse, ignition switch, starter relay, transmission range selector (neutral safety switch on for an automatic transmission) or a start inhibit switch for a manual transmission, and a ground control circuit provided by the PCM. The PCM gets involved here because of the ford passive anti-theft system … Read More

Window goes up but not down

Window goes up but not down, window goes down but not up Or, your power window only works from one switch Ok, so you think your power windows are possessed. They’re not. But what most people don’t understand is that all the power and ground connections run through the driver’s side master switch, and that really complicates the trouble shooting process. Here are the three trouble spots: 1) master switch 2) broken wires in hinge area of door 3) passenger switch 4) window motor 5) broken window regulator The easiest … Read More

No Crank When Hot – Honda

My Honda won’t start when hot To diagnose a No Crank When Hot – Honda, or engine is hot, take a look at this diagram. Battery voltage flows through fuses to the ignition switch. When you turn the key to start, contacts in the ignition switch close and send power to the starter cut relay (located under the dash in the fuse/relay box). The voltage energizes the relay coil which eventually pulls in the contacts, sending voltage to the starter motor solenoid. However, before the relay coil are energized, the … Read More


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