Operation

DIAGNOSTIC SOCKET

OPERATION

General
Feed from the positive battery terminal (C0192) is supplied to fusible link 4 of the engine compartment fuse box (C0632) on an R wire. Fusible link 4 (C0574) is connected to fuse 14 of the passenger compartment fuse box (C0587) by an NW wire. Fuse 14 (C0583) provides a constant battery feed to the diagnostic socket (C0040) on a P wire. The diagnostic socket (C0040) is earthed on a B wire.

The diagnostic socket (C0040) communicates with the following systems and components via the K line on K wires:
^ The instrument pack (C0230).
^ The Central Control Unit (CCU) (C0429).
^ The ABS ECU (C0500) (01 MY vehicles only).
^ The ABS ECU (C0501) (02 MY vehicles only).
^ The SRS DCU (C0256).
^ The cruise control ECU (kV6 ROW vehicles only) (C0239).
^ The Automatic Transmission Control Unit (ATCU) (Td4 and KV6 vehicles only) (C0932).
^ The Engine Control Module (ECM) (KV6 NAS vehicles only) (C0331).
^ The Engine Control Module (ECM) (KV6 ROW vehicles only) (C0371).
^ The ECM (k1.8 vehicles only) (C0913).
^ The ECM (Td4 vehicles only) (C0603).
^ The Fuel Burning Heater (FBH) (Td4 vehicles only) (C0925).

The diagnostic socket (C0040) also communicates with the immobilization ECU (C0059) via the DS-2 bus on a K wire.