This information may apply to newer vehicles that use the CAN protocol, but the headers will need to be modified. Note: This article will work for older GM models that use the J1850 VPW OBDii protocol. The instructions in Section 2 below are still applicable in using this other software. Some members may have access to software that has the same functionality as that described here. This information is applicable to other computer platforms and hardwired OBDii interfaces as well, but this will require adaptation. The first section outlines how to set up your computer to communicate with the vehicle and the second section outlines the specific commands involved in retrieving DTCs. This article will explain how to use a PC running Windows 7 with a Bluetooth OBDii adapter in order to communicate with the PCM and other modules (TCCM, ABS, and airbag). Tools Required: Personal computer with Windows 7 (or ability to adapt instructions for use with other operating system), Bluetooth OBDii adapter (or wired adapter again with ability to adapt instructions), wOBD software (free online) Summary: How to Read ABS/TCCM/PCM Codes Using a Terminal OBDii InterfaceÄifficulty: Easy (mechanically), but medium computer skills are requiredÄ®stimated Time: 30 minutes for first time, 10 minutes subsequent times
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