Security System

Security Control Unit Input Test (cont'd)

22-258  

Cavity

Wire

Test condition

Test: Desired result

Possible cause if result is not obtained

A8

RED/WHT

Ignition key is in the ignition switch

Check for voltage to ground:

There should be 1 V or less.

  • Poor ground (G401)
  • Faulty ignition key switch
  • An open in the wire

Ignition key is out of the ignition switch

Check for voltage to ground:

There should be 5 V or more.

A18

GRN/BLK

Hood open

Check for voltage to ground:

there should be 1 V or less.

  • Faulty hood switch
  • Poor ground (G201)
  • An open in the wire

Hood closed

Check for voltage to ground:

There should be 5 V or more

A7

BLU/YEL

Trunk lid open

Check for voltage to ground:

There should be 1 V or less.

  • Faulty trunk latch switch
  • Poor ground (G601)
  • An open in the wire

Trunk lid closed

Check for voltage to ground:

There should be 5 V or more.

A10

GRY/BLU

Trunk key cylinder switch unlocked

Check for voltage to ground:

There should be 1 V or less.

  • Faulty trunk key cylinder switch
  • Poor ground (G601)
  • An open in the wire

Trunk key cylinder switch in neutral

Check for voltage to ground:

There should be 5 V or more.

A1

WHT/BLK

Driver's door lock knob unlocked

Check for voltage to ground:

There should be 1 V or less.

  • Faulty driver's door lock knob switch
  • Poor ground (G501)
  • An open in the wire

Driver's door lock knob locked

Check for voltage to ground:

There should be 5 V or more.

A12

BRN/WHT

Front passenger's door lock knob unlocked

Check for voltage to ground:

There should be 1 V or less.

  • Faulty front passenger's door lock knob switch
  • Poor ground (G501 or G502: 5-door)
  • An open in the wire

Front passenger's door lock knob locked

Check for voltage to ground:

There should be 5 V or more.

A13

BLK/WHT

Left rear door lock knob unlocked

Check for voltage to ground:

There should be 1 V or less.

  • Faulty left rear door lock knob switch
  • Poor ground (G551)
  • An open in the wire

Left rear door lock knob locked

Check for voltage to ground:

There should be 5 V or more.

A2

BLK/RED

Right rear door lock knob unlocked

Check for voltage to ground:

There should be 1 V or less.

  • Faulty right rear door lock knob switch
  • Poor ground (G551)
  • An open in the wire

Right rear door lock knob locked

Check for voltage to ground:

There should be 5 V or more.

A4

WHT/RED

Driver's door key cylinder locked

Check for voltage to ground:

There should be 1 V or less.

  • Faulty driver's door key cylinder switch
  •     Poor ground (G501)
  • An open in the wire
  • A short to ground

Driver's door key cylinder in neutral

Check for voltage to ground:

There should be 5 V or more.

A3

·

B3

WHT

Driver's door key cylinder unlocked

Check for voltage to ground:

There should be 1 V or less.

Driver's door key cylinder in neutral

Check for voltage to ground:

There should be 5 V or more.

A15

PNK

Front passenger's door key cylinder locked

Check for voltage to ground:

There should be 1 V or less.

  • Faulty front passenger's door key cylinder switch
  • Poor ground (G502)
  • An open in the wire
  • A short to ground

Front passenger's door key cylinder in neutral

Check for voltage to ground:

There should be 5 V or more.

A14

·

B10

PNK/BLU

Front passenger's door key cylinder unlocked

Check for voltage to ground:

There should be 1 V or less.

Front passenger's door key cylinder in neutral

Check for voltage to ground:

There should be 5 V or more.