Automatic Transmission Using Voltmeter
- Ensure ignition is off. Connect analog voltmeter negative lead to a data link connector ground terminal and positive lead to terminal No. 6. See Figure .
- If DTCs are stored in TCL module memory, voltmeter needle will begin to sweep. Long sweeps represent tens; short sweeps represent ones. For example, 4 long sweeps and 3 short sweeps indicate DTC 43. If 2 or more DTCs are stored, lowest number will be displayed first.
- After recording DTC(s), perform necessary testing. See the appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS. If no DTCs are stored, voltmeter needle will sweep constantly.