![[-]](https://vxoc.org.uk/forum/images/dark1.8/collapse.png "[-]")
25:th-Apr-2018, 23:05:18
My trailer interface module won't program with the Tech2 due to my chassis number (A13DTE engine shouldnt have a towbar fitted it seems)
When it reads the VIN as part of programming it refuses... even if i use the VIN thats stored in the TIM, that's from a 1.7 engined meriva,
So i removed the GM-lan wire from the TIM, connected that to the tech2's obdii connector... pin 1 - gm-lan, pin 4 and 5 to earth, pin 16 to power,
i can talk to the TIM with the tech2 like this, read DTC's, operate the light test functions, and read the data display (always saying no trailer detected... i bypassed the switch in the 13 pin trailer socket, still wont detect it (it's a simple switch to earth when the plug is not in... it's the not detecting the trailer that's my problem i'm trying to fix)
i tried to do a configuration and setup SPS on the TIM, but it wont.. says it cant pull the VIN... that means it must be puling the BCM's vin before it will procede in the programing??
i connected the tim back to the car's GM-lan, but i guess the tech2 accesses the BCM over another can connection, and i;d have the same problem as soon as it reads my vin.
i know some people use a bench loom to program things... do i need to get a spare BCM to do this? i gather it's too risky changing the VIN in my cars bcm temporarily.
When it reads the VIN as part of programming it refuses... even if i use the VIN thats stored in the TIM, that's from a 1.7 engined meriva,
So i removed the GM-lan wire from the TIM, connected that to the tech2's obdii connector... pin 1 - gm-lan, pin 4 and 5 to earth, pin 16 to power,
i can talk to the TIM with the tech2 like this, read DTC's, operate the light test functions, and read the data display (always saying no trailer detected... i bypassed the switch in the 13 pin trailer socket, still wont detect it (it's a simple switch to earth when the plug is not in... it's the not detecting the trailer that's my problem i'm trying to fix)
i tried to do a configuration and setup SPS on the TIM, but it wont.. says it cant pull the VIN... that means it must be puling the BCM's vin before it will procede in the programing??
i connected the tim back to the car's GM-lan, but i guess the tech2 accesses the BCM over another can connection, and i;d have the same problem as soon as it reads my vin.
i know some people use a bench loom to program things... do i need to get a spare BCM to do this? i gather it's too risky changing the VIN in my cars bcm temporarily.