Vci Module Diagnostic Chart - GMC Tech2 User Manual

VCI MODULE DIAGNOSTIC CHART

Test
MUX MUX A: S5 & S14
(Multiplexer)
MUX B: S1 & S3
VCI adapter ID Recognized adapter
(performed only Cannot identify adapter
during selectable
VCI test)
VCI ADC Channel A - pass/fail
(Analog to digital Channel B - pass/fail
converter)
Cross point Pull up - pass/fail
TPU5, TPU1, and TPU0 -
pass/fail (results from selectable
VCI test)
SIPO Pass/fail for each area tested
(Serial In Parallel
Out)
DLC DLC1 - DLC2
(Data Link pass/fail count
Connector)
DLC2 - DLC1
pass/fail count
CCD CCD - pass/fail
(Chrysler CCD - loopback not connected
Collision
Detection)
Results
pass/fail
pass/fail
General Motors Tech2 User Guide
Solution
If MUX A or B fails, cycle
Tech2 power and retest. If
problem persists, contact
Customer Support.
If adapter fails second
test, contact Customer
Support.
If channel A or channel B
fail, cycle Tech2 and
retest. If problem persists,
contact Customer
Support.
If a failure occurs, cycle
Tech2 and retest.
If problem persists,
contact Customer
Support.
If a failure occurs, cycle
Tech2 and retest. If
problem persists, contact
Customer Support
If a failure occurs, cycle
Tech2 and retest.
If problem persists,
contact Customer
Support.
Connect loopback and
retest if loopback not
connected. If test fails,
disregard results. Test is
not for GM vehicles (other
than Saab) at this time.
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