EXTERIOR LIGHTS – Cadillac CTS 2003 – SYSTEM WIRING DIAGRAMS

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Cadillac CTS 2003

List of elements for Back-up Lamps Wiring Diagram for Cadillac CTS 2003:

• (in engine compartment, on engine block near starter motor) g100
• (in rear compartment, to rear of left rear shock tower) g402
• A12
• C421
• Computer data lines system
• Hot at all times
• Inside rearview mirror (isrvm)
• Left back up lamp
• Left rear fuse block (below left rear seat)
• M/t
• R36
• R37
• R38
• R40
• Rear integration module (rim) (under package shelf trim panel)
• Relay control
• Rev lamp relay
• Reverse lamp fuse 10a
• Reverse lamp switch (near shift control assembly)
• Reverse sw signal
• Right back up lamp
• S401
• Serial data

Exterior Lamps Wiring Diagram (1 of 2) for Cadillac CTS 2003

List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Cadillac CTS 2003:

• (in forward lamp harness, approximately 10 cm (3.2 in) from horn assembly) s115
• (in passenger compartment, behind left kick pad) g200
• (in rear compartment to rear of left rear shock tower) g402
• (on right front corner of vehicle, on right body rail near right headlamp) g104
• A11
• A12
• Auto
• Battery
• Computer data lines system
• Control power output
• Dash integration module (dim) (under right side of dash, above right closeout/ insulator panel)
• Drl relay control
• Drl relay ctrl
• Ground
• Hazard sw signal switch
• Hazard switch
• Hazard switch output
• Hazard switch signal
• Hdlp
• Headlamp sw on signal
• Headlamp switch
• Hot at all times
• Left front park lamp
• Left front park/turn signal lamp
• Left front side marker lamp
• Left front turn signal
• Left front turn/drl out
• Left license lamp
• Left rear turn lamp
• Left turn signal voltage
• Lic/dimming fuse 15a
• Lt park fuse 10a
• Off
• Panel lamp voltage
• Park lamp relay
• Park lamp relay ctrl
• Park lamp sw on signal
• Pnk
• R31
• R32
• R33
• R34
• Right front park/turn signal lamp
• Right front turn signal
• Right front turn voltage
• Right front turn/drl out
• Right license lamp
• Right rear turn lamp
• S119
• S401
• S402
• Serial data
• Splice pack sp202 (in passenger compartment, under dash trim pad, near instrument panel cluster (ipc))
• Splice pack sp203 (in passenger compartment, under left side of dash trim pad)
• To underhood fuse block (rt park fuse, 10a) (diagram 2 of 2)
• Turn signal hazard flasher module (in left front of passenger compartment, under dash)
• Underhood fuse block (at left front of engine compartment)

Exterior Lamps Wiring Diagram (2 of 2) for Cadillac CTS 2003

List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Cadillac CTS 2003:

• (in rear compartment to rear of left rear shock tower) g402
• (in rear compartment to rear of right rear shock tower) g401
• (in rear compartment, to rear of left rear shock tower) g402
• (on right front corner of vehicle, on right body rail near right headlamp) g104
• Center high mounted stop lamp (chmsl)
• Computer data lines system
• E10
• Electronic brake control module (ebcm) (at right front corner of engine compartment)
• Engine control module (ecm) (at right front corner of engine compartment)
• Flasher fuse 15a
• From underhood fuse block (lt park fuse, 10a) (diagram 1 of 2)
• Hot at all times
• Hot in run or crank
• Hvac control module (behind center of dash, below radio)
• Instrument panel cluster (ipc)
• Left rear side marker lamp
• Left rear tail/stop lamp
• Left turn indicator
• Lights on indicator
• Pnk
• Radio
• Right front park lamp
• Right front side marker lamp
• Right rear side marker lamp
• Right rear tail/stop lamp
• Right turn indicator
• Rt park fuse 10a
• S315
• S316
• S318
• S401
• S402
• Serial data
• Splice pack sp200 (in right front of passenger compartment, under dash, above steering column)
• Splice pack sp302 (in passenger compartment, on left frame rail, near left side of driver's seat)
• Stop lamp switch (near top of brake pedal)
• Stop lp sw fuse 15a
• Strg ctrls fuse 10a
• Underhood fuse block (at left front of engine compartment)