What does no bus mean on a jeep?
The reply stating that the battery was just changed makes me more suspicious that this is the cause. The no bus syndrome on the jeeps. Had one in the shop a no start with the fuel and amp gauge not working. The no bus signal on the odom.
What does no bus mean on the odometer?
RECENTLY HAD “no buS” SHOW ON THE ODOMETER IN MY 2000 JEEP WRANGLER. THE VEHICLE DID START AND RAN WITHOUT A PROBLEM, BUT WHO KNOWS FOR HOW LONG. THE ONLY RECENT CHANGE WAS A NEW BATTERY. Having the same problem on my ’99 Jeep Cherokee.
Where is the bus located on a jeep?
ON JEEP DODGE CHRYSLER VEHICLES COMPUTERS COMMUNICATE WITH ONE ANOTHER ACROSS THE “BUS”. THE BUS IS CONTROLLED BY THE BODY CONTROLLER. DOUBLE CHECK ALL FUSES IN PDC (POWER DISTRABUTION CENTER) UNDER HOOD AND FUSE CENTER UNDER DASH.
How to remove dash panel on Jeep Wrangler JK?
This is a short video on how to remove a 2007-2017 Jeep Wrangler JK dash panel/bezel. You may need to remove your Jeep Wangler dash for a multitude of reasons like, running wires, new radio, adding switches. Removing the dash cover makes it super easy to run wires and hide them like a pro! Loading…
What kind of bus does a Jeep Wrangler use?
The same two-wire CCD BUS that Chrysler has been using for years on its cars is now being used on Jeeps and trucks, giving today’s Jeep Wrangler a new level of sophistication. On these vehicles, the BUS bias voltage is produced by the printed circuit board or instrument cluster.
The reply stating that the battery was just changed makes me more suspicious that this is the cause. The no bus syndrome on the jeeps. Had one in the shop a no start with the fuel and amp gauge not working. The no bus signal on the odom.
What to do if your instrument cluster is not working?
If the instrument cluster doesn’t work, first determine which gauges don’t operate or if the whole cluster is down. I like to start testing with the printed circuit board self test. Check your manual for the proper procedure, as they may vary somewhat. 1. Put the key in the unlock position, the next position up from lock.
What kind of CCD bus does Jeep use?
The same two-wire CCD BUS that Chrysler has been using for years on its cars is now being used on Jeeps and trucks, giving today’s Jeep Wrangler a new level of sophistication. If the instrument cluster doesn’t work, first determine which gauges don’t operate or if the whole cluster is down.
What to do when your Jeep Cherokee won’t start?
The first thing to check when the engine won’t start is to see if you have spark at the spark plugs. When the car won’t start and you have a spark at the spark plugs then the problem would most likely be in the fuel system. Checking fuel pressure would be next and also checking to see if you have an injector pulse at the fuel injectors.
Where is the no bus signal on the Odom?
The no bus signal on the odom. Pcm depends on an 8 volt ref to communicate through the bus line to the cluster to operate the dash and to communicate threw the aldl connecter. If any sensor shorts out the pcm goes dead and the no bus sign shows. On the rear drivers side top of bellhousing is the location for the crank sensor.
Where is the no bus sign on my car?
If any sensor shorts out the pcm goes dead and the no bus sign shows. On the rear drivers side top of bellhousing is the location for the crank sensor. Unplug the sensor and watch your dash. Your meters will restore and the NO BUS flag will be gone.
Why does my Jeep Cherokee crank but not start?
Re: Cranks but will not start, no PCM function. You still don’t have spark or injector pulse; this should be looked into first. It still could be a bad crank sensor. The crank sensor sends the pulse to the PCM and then it sends the signals to the proper areas like spark, fuel relay, and injector pulse.
Why does my Jeep Cherokee have no spark?
I have no communication to the computer with a scanner, no check engine light, no 5 v reference, no spark. I have tried to manually pull codes with the key. The dealer says that it does not have an immobilizer by the VIN number. I have power and grounds to the PCM connectors.
When does the CCD system go into idle mode?
When the data bus voltage differential is a steady 0.02 volts, the CCD system is considered “idle.” When no input is received from any module and the ignition switch is in the Off position for a pre-programmed length of time, the bus data becomes inactive or enters the ”sleep mode.”
How does a CCD module communicate with the data bus?
CCD Chips In order for an electronic control module to communicate with the CCD data bus, it must have a CCD chip (Fig. 5). The CCD chip contains a differential transmitter/receiver (or transceiver), which is used to send and receive messages. Each module is wired in parallel to the data bus through its CCD chip.