Preparation for Test
1. Connect impulse counter scan tool or Hand-Held Tester (HHT) according
to connection diagram (see section 0).
Connect yellow wire to socket 23 of 38-pole data link connector (X11/4).
DTC readout begins with the most current fault and ends with the oldest
(logic: last in, first out).
Electrical wiring diagrams:
Electrical Troubleshooting Manual, Model 202, Volume 2, groups 80