Author Topic: Help with Isuzu transmission temp  (Read 4733 times)

Offline buzzed_man

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Help with Isuzu transmission temp
« on: November 05, 2015, 04:29:36 AM »
Hi all,

I'm hoping someone can point out where i'm going wrong trying to read the transmission temp on my Isuzu Dmax. The MX 1.3 detects the system as 11-bit CAN.

The Scangauge / X-Gauge details to read the value are as follows (i've tested these with a mate's scangauge on my car and it works fine)

TXD 07E2 22 1940
RXF 04 62 05 19 06 40
RXD 30 08
MTH 0001 0001 FFD8


Working through the documentation that came with my MX 1.3 i've come up with the following:

TXDATA = 07E2221940

MTCH = RXF ignoring bytes 1,3,5 = 621940

RPOS = RXD - 0x1000 = 3008 - 1000 = 0x2008

TCTRL: The documentation suggests that 93 is a typical value, but I have 5 bytes of TXDATA (right?), so i'm thinking my TCTRL is :

10010101 = 0x95 

RCTRL = ??? i've only tried the suggested value of "31"

MATH - i.e X:0001 / : 0001 + FFD8

OUT FORMAT: 0


When I try the above I only get the "err" response on the MX. Any ideas...?

Thanks,
Marc.

Offline UltraGauge Admin

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Re: Help with Isuzu transmission temp
« Reply #1 on: November 05, 2015, 07:01:57 AM »
TCNTRL=0x93, the address is not included in the byte count

Offline jet

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Re: Help with Isuzu transmission temp
« Reply #2 on: January 14, 2017, 11:40:44 PM »
Got this working
How to get rid of excess zeros and decimal point

Getting numbers like 71.000, 72.000 etc