VSS bit question
#1
VSS bit question
I did a TPI conversion on my truck, and it runs fine. I bought a VSS from JTR, and it will not read the vehicle speed in Tunerpro. I tested the VSS on a freq counter, and it shows varying AC voltages and frequencies when spun by a drill. I checked continuity from the VSS connector to C2 and C8 on the ECM plug, and it was good. I am using SAUJP 305 bin I downloaded from the Moates files. Is it possible speed sensor bits are set wrong? I do not know which ones should be set for normal operation. Current configuration:
Bit 0: not set
Bit 1: not set
Bit 2: not set
Bit 3: set
Bit 4: set
Bit 5: not set
Bit 6: not set
Bit 7: set
Thanks for any advice!
Gary
Bit 0: not set
Bit 1: not set
Bit 2: not set
Bit 3: set
Bit 4: set
Bit 5: not set
Bit 6: not set
Bit 7: set
Thanks for any advice!
Gary
#6
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Re: VSS bit question
Ip Divisor !
B7 b6 b5 b4 b3 b2 b1 b0 (b4-b0 are not used in the correction)
B7 set = (10000000) value of 128... speedo reads 96 mph
B6 set = (01000000) value of 64... speedo reads 83 mph
B7,B6 set = (11000000) value of 192... speedo reads 73 mph
B5 set = (00100000) value of 32... speedo reads 65 mph
B7 , B5 set = (10100000) value of 160... speedo reads 58 mph
B6 , B5 set = (01100000) value of 96... speedo reads 53 mph
B7 b6 b5 b4 b3 b2 b1 b0 (b4-b0 are not used in the correction)
B7 set = (10000000) value of 128... speedo reads 96 mph
B6 set = (01000000) value of 64... speedo reads 83 mph
B7,B6 set = (11000000) value of 192... speedo reads 73 mph
B5 set = (00100000) value of 32... speedo reads 65 mph
B7 , B5 set = (10100000) value of 160... speedo reads 58 mph
B6 , B5 set = (01100000) value of 96... speedo reads 53 mph
#7
Re: VSS bit question
Ip Divisor !
B7 b6 b5 b4 b3 b2 b1 b0 (b4-b0 are not used in the correction)
B7 set = (10000000) value of 128... speedo reads 96 mph
B6 set = (01000000) value of 64... speedo reads 83 mph
B7,B6 set = (11000000) value of 192... speedo reads 73 mph
B5 set = (00100000) value of 32... speedo reads 65 mph
B7 , B5 set = (10100000) value of 160... speedo reads 58 mph
B6 , B5 set = (01100000) value of 96... speedo reads 53 mph
B7 b6 b5 b4 b3 b2 b1 b0 (b4-b0 are not used in the correction)
B7 set = (10000000) value of 128... speedo reads 96 mph
B6 set = (01000000) value of 64... speedo reads 83 mph
B7,B6 set = (11000000) value of 192... speedo reads 73 mph
B5 set = (00100000) value of 32... speedo reads 65 mph
B7 , B5 set = (10100000) value of 160... speedo reads 58 mph
B6 , B5 set = (01100000) value of 96... speedo reads 53 mph
So the other bits are just for speedo correction? I am using a mechanical cable drive speedo, so these would not matter how they were set for me? But, bit 6 must be set to use magnetic vss.
Thanks!
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