ST170 ERROR etc CODE D262, Odometer
#1
Wahay!! I've lost my Virginity!!
Thread Starter
ST170 ERROR etc CODE D262, Odometer
Anyone know what this error means, I checked it out as Missing sm, or something to that effect, But that may as well be Chinese to me!!!
what does it mean??
Any help appreciated!
cheers
Rob
what does it mean??
Any help appreciated!
cheers
Rob
#3
PassionFord Post Whore!!
U1262 D262 Missing SCP (J1850) Message. (U codes are faults within the communication network)
SCP - Standard Corporate Protocol (module communications, Engine ECU > Instrument cluster > ABS/ESP etc)
SAE J1850 PWM (pulse-width modulation — 41.6 kB/sec, standard of the Ford Motor Company)
Some bedtime reading on J1850.
http://www.interfacebus.com/Automoti...J1850_Bus.html
Yeah, chinese!
SCP - Standard Corporate Protocol (module communications, Engine ECU > Instrument cluster > ABS/ESP etc)
SAE J1850 PWM (pulse-width modulation — 41.6 kB/sec, standard of the Ford Motor Company)
Some bedtime reading on J1850.
http://www.interfacebus.com/Automoti...J1850_Bus.html
The SAE J1850 bus bus is used for diagnostics and data sharing applications in vehicles.
The J1850 bus takes two forms; A 41.6Kbps Pulse Width Modulated (PWM) two wire differential approach, or a 10.4Kbps Variable Pulse Width (VPW) single wire approach. The single wire approach may have a bus length up to 35 meters (with 32 nodes).
Developed in 1994, J1850 may be phased out for new designs. The J1850 Interface is a class B protocol. Vehicle Buses
A high resides between 4.25 volts and 20 volts, a low is any thing below 3.5 volts. High and low values are sent as bit symbols (not single bits).
Symbols times are 64uS and 128uS for the single wire approach.
The bus uses a weak pull-down, the driver needs to pull the bus high, high signals are considered dominant.
A passive logic 1 is sent as a 128uS low level, an active logic 1 is sent as a 64uS high.
A passive logic 0 is sent as a 64uS low level, an active logic 0 is sent as a 128uS high.
The J1850 protocol uses CSMA/CR arbitration. The frame consists of a Start Of Frame [SOF], which is high for 200uS.
The Header byte follows the SOF and is one byte long. The data follows the header byte.
The one byte CRC [Cyclic Redundancy Check] follows the data field.
After the CRC an End Of Data [EOD] symbol is sent. The EOD is sent as a 200uS low pulse.
The J1850 bus takes two forms; A 41.6Kbps Pulse Width Modulated (PWM) two wire differential approach, or a 10.4Kbps Variable Pulse Width (VPW) single wire approach. The single wire approach may have a bus length up to 35 meters (with 32 nodes).
Developed in 1994, J1850 may be phased out for new designs. The J1850 Interface is a class B protocol. Vehicle Buses
A high resides between 4.25 volts and 20 volts, a low is any thing below 3.5 volts. High and low values are sent as bit symbols (not single bits).
Symbols times are 64uS and 128uS for the single wire approach.
The bus uses a weak pull-down, the driver needs to pull the bus high, high signals are considered dominant.
A passive logic 1 is sent as a 128uS low level, an active logic 1 is sent as a 64uS high.
A passive logic 0 is sent as a 64uS low level, an active logic 0 is sent as a 128uS high.
The J1850 protocol uses CSMA/CR arbitration. The frame consists of a Start Of Frame [SOF], which is high for 200uS.
The Header byte follows the SOF and is one byte long. The data follows the header byte.
The one byte CRC [Cyclic Redundancy Check] follows the data field.
After the CRC an End Of Data [EOD] symbol is sent. The EOD is sent as a 200uS low pulse.
Last edited by GVK.; 12-09-2013 at 10:25 PM.
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