speedometer off
Thread Starter
Intermediate
Joined: Feb 2015
Posts: 28
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speedometer off
I just noticed that my speedometer is off it says 30 when im really going 45-50. I just got it back from the shop and they changed the sensor that reads the oil pressure. I dont think that should have messed with the speedometer any suggestions to what it could be from?
Safety Car
Joined: Sep 2005
Posts: 4,213
Likes: 643
From: Orange County Ca
I just noticed that my speedometer is off it says 30 when im really going 45-50. I just got it back from the shop and they changed the sensor that reads the oil pressure. I dont think that should have messed with the speedometer any suggestions to what it could be from?
Tech Contributor
Joined: Oct 1999
Posts: 41,032
Likes: 9,789
From: Charlotte, NC (formerly Endicott, NY)
The IPC displays the vehicle speed based on the information from the vehicle speed sensor. The ECM converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The IPC uses the vehicle speed signal circuit (4,000 pulses/mile) from the ECM in order to calculate the vehicle speed. The vehicle speed signal circuit is pulled up to controlled B+ in the IPC. The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit exists. The speedometer displays either miles or kilometers as requested by the activation of the English/Metric setting on the driver information center (DIC). The associated indicator, MPH or KM/H, illuminates.
The HUD displays the vehicle speed based on information from the vehicle speed sensor. The engine control module (ECM) converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The HUD uses the vehicle speed signal circuit (4,000 pulses/mile) from the ECM in order to calculate the vehicle speed. The HUD displays either miles or kilometers as requested by the activation of the English/metric button in the DIC switch. The associated indicator (km/h or MPH) illuminates.
The signal from the ECM is sent to the Underhood Electrical Center. After it passes through the Underhood Electrical connector it goes to a shorting connector/jumper identified as J211. From there it is distributed on separate lines to the HUD, IP and the radio.
Bill
Last edited by Bill Dearborn; Mar 10, 2015 at 08:22 PM.
Melting Slicks
Joined: Nov 2007
Posts: 2,277
Likes: 550
From: Pittsburgh PA
St. Jude Donor '10-'11-'12-'13-'14
Might it have been switched from kilometers per hour to miles per hour? Don't know where you're from so don't know which you might use, but 50 KPH = about 30 MPH.
Race Director
Joined: Aug 2005
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From: Hudson WI
NCM Sinkhole Donor
Thread Starter
Intermediate
Joined: Feb 2015
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Do they both read incorrectly? If not which one does, HUD or IP.
The IPC displays the vehicle speed based on the information from the vehicle speed sensor. The ECM converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The IPC uses the vehicle speed signal circuit (4,000 pulses/mile) from the ECM in order to calculate the vehicle speed. The vehicle speed signal circuit is pulled up to controlled B+ in the IPC. The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit exists. The speedometer displays either miles or kilometers as requested by the activation of the English/Metric setting on the driver information center (DIC). The associated indicator, MPH or KM/H, illuminates.
The HUD displays the vehicle speed based on information from the vehicle speed sensor. The engine control module (ECM) converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The HUD uses the vehicle speed signal circuit (4,000 pulses/mile) from the ECM in order to calculate the vehicle speed. The HUD displays either miles or kilometers as requested by the activation of the English/metric button in the DIC switch. The associated indicator (km/h or MPH) illuminates.
The signal from the ECM is sent to the Underhood Electrical Center. After it passes through the Underhood Electrical connector it goes to a shorting connector/jumper identified as J211. From there it is distributed on separate lines to the HUD, IP and the radio.
Bill
The IPC displays the vehicle speed based on the information from the vehicle speed sensor. The ECM converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The IPC uses the vehicle speed signal circuit (4,000 pulses/mile) from the ECM in order to calculate the vehicle speed. The vehicle speed signal circuit is pulled up to controlled B+ in the IPC. The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit exists. The speedometer displays either miles or kilometers as requested by the activation of the English/Metric setting on the driver information center (DIC). The associated indicator, MPH or KM/H, illuminates.
The HUD displays the vehicle speed based on information from the vehicle speed sensor. The engine control module (ECM) converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The HUD uses the vehicle speed signal circuit (4,000 pulses/mile) from the ECM in order to calculate the vehicle speed. The HUD displays either miles or kilometers as requested by the activation of the English/metric button in the DIC switch. The associated indicator (km/h or MPH) illuminates.
The signal from the ECM is sent to the Underhood Electrical Center. After it passes through the Underhood Electrical connector it goes to a shorting connector/jumper identified as J211. From there it is distributed on separate lines to the HUD, IP and the radio.
Bill
Thread Starter
Intermediate
Joined: Feb 2015
Posts: 28
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No its still in mph but wih that logic I could change it to kilometers for know so I get a better estimate of my speed until I can get it fixed
