Table 1 TECH 1 Checking
TECH 1 refers to table 1, if the equipment is correctly connected, but no data (with ignition ON) can be received by TECH 1.
· Start TECH 1 self-test (see TECH 1 Operating Instructions).
lf data can still not be received after the self-test:
- Diagnostic plug (ALDL)
- Engine telltale
- Control unit voltage supply
- Control unit ground connection
are to be checked according to Table 1.