SECTION VI TROUBLESHOOTING
2005 Tech 2 User’s Guide VI - 16
Testing Status
TPU0 Pass
TPU1 Pass
TPU5 Pass
TPU12 and 15 Pass
TPU13 and 14 Pass
The two TPU inputs that the CANdi module requires are TPU12 and TPU15, which enable the module
and detect its presence. If TPU12 and 15 do not appear on the screen, then they are defective in the
VCI module and the VCI is failing to properly enable the CANdi module. If the above test passes, you
must repeat the same test with the Burndy loopback adapter at the end of the cable. The setup is the
same as if you were plugging into a vehicle without the CANdi module connected and with the loopback
adapter at the end of the cable. Then you must run the VCI TPU test. If the example above appears
(TPU13 and 14 are missing in this test because these I/Os don’t go through the cable), then the cable
is also fine. However, if TPU12 and 15 are missing, then the cable is defective.
4. Verify that the DLC cable (also known as the ALDL, J-1962, or OBDII interface cable) is functioning
properly and then proceed to step five. Replace the DLC cable if it does not function properly. Call the
Techline Customer Support Center (TCSC) at 1-800-828-6860 for more information if you have trouble
with this test.
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