Most of connector symbols in wiring diagrams are shown from the terminal side.
For description and how to disconnect, refer to PG section, “Description”, “HARNESS CONNECTOR”.

Connector guides for male terminals are shown in black and female terminals in white in wiring diagrams.

Sample/wiring diagram -example-P0420 Three way catalyst function
DTC Logic
DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen storage c ...
Rear window glass
Exploded View
Rear window glass
Spacer
Rubber dam
Body side outer
Headlining
Roof panel
Trunk lid
Adhesive
12 mm (0.5 in)
7 mm (0.3 in)
2.0 mm (0.08 in)
3 mm (0.1 in)
Removal and Installation
REMOVAL
Partially remove the rear of the headlining (rear edge). R ...
Front suspension assembly
Inspection
COMPONENT PART
Check the mounting conditions (looseness, backlash) of each component. Verify
the component conditions
(wear, damage) are normal.
Ball Joint Axial End Play
Set the front wheels in a straight-ahead position.
Hold the axle side of the transverse link, and check th ...