Up shift arrow on 5speed
Up shift arrow on 5speed
10-10-2009, 07:55 AM
#2
Senior Member
Join Date: Sep 2008
Location: Montreal
Posts: 354
Re: Up shift arrow on 5speed
Put some black tape over that idiot light and ignore it completely. It was a feature added as a practical joke by a devious Chrysler engineer after a liquid lunch.
But in answer to your question, here's what the 98 FSM says:
The upshift indicator lamp is controlled by the instrument cluster circuitry
based upon a message received from the Powertrain Control Module (PCM) on the Chrysler Collision Detection (CCD) data bus. The upshift indicator lamp illumination brightness is also adjustable, using the same input from the headlamp switch as the cluster illumination lamps.
The PCM uses inputs from many sensors and its internal programming to decide whether the engine speed and load conditions are correct for a transmission
upshift. The PCM then sends the proper message to the instrument cluster on the CCD data bus to turn the lamp on or off. The PCM will send a lamp-off message three to five seconds after a lamp-on message, if an upshift is not performed. The lamp will then remain off until the vehicle stops accelerating and is brought back into the range of lamp operation, or until the transmission is shifted into another gear.
What the FSM does not say is that shifting when the light tells you to may provide maximum fuel economy, but will also make the vehicle virtually undriveable in most normal situations. Pay no attention to it and all will be good.
But in answer to your question, here's what the 98 FSM says:
The upshift indicator lamp is controlled by the instrument cluster circuitry
based upon a message received from the Powertrain Control Module (PCM) on the Chrysler Collision Detection (CCD) data bus. The upshift indicator lamp illumination brightness is also adjustable, using the same input from the headlamp switch as the cluster illumination lamps.
The PCM uses inputs from many sensors and its internal programming to decide whether the engine speed and load conditions are correct for a transmission
upshift. The PCM then sends the proper message to the instrument cluster on the CCD data bus to turn the lamp on or off. The PCM will send a lamp-off message three to five seconds after a lamp-on message, if an upshift is not performed. The lamp will then remain off until the vehicle stops accelerating and is brought back into the range of lamp operation, or until the transmission is shifted into another gear.
What the FSM does not say is that shifting when the light tells you to may provide maximum fuel economy, but will also make the vehicle virtually undriveable in most normal situations. Pay no attention to it and all will be good.
10-10-2009, 07:24 PM
#3
Junior Member
Thread Starter
Join Date: Oct 2009
Location: Ontario
Posts: 5
Re: Up shift arrow on 5speed
Put some black tape over that idiot light and ignore it completely. It was a feature added as a practical joke by a devious Chrysler engineer after a liquid lunch.
But in answer to your question, here's what the 98 FSM says:
The upshift indicator lamp is controlled by the instrument cluster circuitry
based upon a message received from the Powertrain Control Module (PCM) on the Chrysler Collision Detection (CCD) data bus. The upshift indicator lamp illumination brightness is also adjustable, using the same input from the headlamp switch as the cluster illumination lamps.
The PCM uses inputs from many sensors and its internal programming to decide whether the engine speed and load conditions are correct for a transmission
upshift. The PCM then sends the proper message to the instrument cluster on the CCD data bus to turn the lamp on or off. The PCM will send a lamp-off message three to five seconds after a lamp-on message, if an upshift is not performed. The lamp will then remain off until the vehicle stops accelerating and is brought back into the range of lamp operation, or until the transmission is shifted into another gear.
What the FSM does not say is that shifting when the light tells you to may provide maximum fuel economy, but will also make the vehicle virtually undriveable in most normal situations. Pay no attention to it and all will be good.
But in answer to your question, here's what the 98 FSM says:
The upshift indicator lamp is controlled by the instrument cluster circuitry
based upon a message received from the Powertrain Control Module (PCM) on the Chrysler Collision Detection (CCD) data bus. The upshift indicator lamp illumination brightness is also adjustable, using the same input from the headlamp switch as the cluster illumination lamps.
The PCM uses inputs from many sensors and its internal programming to decide whether the engine speed and load conditions are correct for a transmission
upshift. The PCM then sends the proper message to the instrument cluster on the CCD data bus to turn the lamp on or off. The PCM will send a lamp-off message three to five seconds after a lamp-on message, if an upshift is not performed. The lamp will then remain off until the vehicle stops accelerating and is brought back into the range of lamp operation, or until the transmission is shifted into another gear.
What the FSM does not say is that shifting when the light tells you to may provide maximum fuel economy, but will also make the vehicle virtually undriveable in most normal situations. Pay no attention to it and all will be good.
10-20-2009, 10:50 PM
#6
Re: Up shift arrow on 5speed
Nothing like a 2 the point answer. Its another idiot light, as the man says ignore it or tape it. You have 33" tires on ur tj the light tells u to shift at 2000 rpm yea right, if u have small tires maybe.
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