Diagnosis And Testing - Left MULTIFUNCTION Switch

2004 Toyota Matrix XR, FWD, StandardSECTION Diagnosis And Testing - Left MULTIFUNCTION Switch
WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.

Refer to SYSTEM WIRING DIAGRAMS .

  1. Disconnect and isolate the battery negative cable. Disconnect the instrument panel wire harness connector from the multi-function switch connector.
  2. Using an ohmmeter, perform the continuity and resistance tests at the terminals in the left multi-function switch connector (refer to MULTI-FUNCTION SWITCH - BLACK 12 WAY ) as shown in the LEFT MULTI-FUNCTION SWITCH CONTINUITY/RESISTANCE TEST table.
    LEFT MULTI-FUNCTION SWITCH CONTINUITY/RESISTANCE TEST SPECIFICATIONS

    TURN SIGNAL SWITCH
    SWITCH POSITION CONTINUITY BETWEEN
    Neutral No Related Continuity
    Left Pins 2 & 8
    Right Pins 2 & 7
    Neutral Pins 2 & 9
    EXTERIOR LIGHTING SWITCH 
    SWITCH POSITION CONTINUITY BETWEEN RESISTANCE BETWEEN RESISTANCE
    Off - Pins 4 & 11 3743 - 3824 ft
    Park Lamps On - Pins 4 & 11 901 - 926 Ω
    Head Lamps On - Pins 4 & 11 345 - 358 Ω
    Auto Headlamps On - Pins 4 & 11 74 - 81 Ω
    Fog Lamps Pins 1 & 4 - -
    Optical Horn Pins 2 & 5 - -
    High Beam Pins 2 & 6 - -
    INTERIOR LIGHTING SWITCH 
    Dome Lamp Disable On - Pins 4 & 10 63 - 70 Ω
    Panel Lamps Dimming Position 1 - Pins 4 & 10 198 --208 11
    Dimming Position 2 - Pins 4 & 10 551 - 569 Ω
    Dimming Position 3 - Pins 4 & 10 905 - 929 Ω
    Dimming Position 4 - Pins 4 & 10 1258 - 1290 Ω
    Dimming Position 5 - Pins 4 & 10 1611 - 1651 Ω
    Dimming Position 6 - Pins 4 & 10 1965-2011 Ω
    Parade Mode On - Pins 4 & 10 3534-3611 Ω
    Dome Lamp Enable On - Pins 4 & 10 7811 - 7974 Ω
  3. If the left multi-function switch fails any of the continuity or resistance tests, replace the switch (Refer to REMOVAL ).
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
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