Toyota
Dodge Durango
 Service Manual
Brakes » Base brake system » Diagnosis and testing
Brake lamp switch

The brake lamp switch can be tested with an ohmmeter.

The ohmmeter is used to check continuity between the pin terminals (Fig. 4).

SWITCH CIRCUIT IDENTIFICATION

  • Terminals 1 and 2: brake lamp circuit
  • Terminals 3 and 4: RWAL/ABS module and Powertrain Control Module (PCM) circuit
  • Terminals 5 and 6: speed control circuit

Fig. 4 Brake Lamp Switch Terminal Identification Fig. 4 Brake Lamp Switch Terminal Identification

1 - TERMINAL PINS

2 - PLUNGER TEST POSITIONS

SWITCH CONTINUITY TEST

NOTE: Disconnect switch harness before testing switch continuity.

With switch plunger extended, attach test leads to pins 1 and 2. Replace switch if meter indicates no continuity.

With switch plunger retracted, attach test leads to pins 3 and 4. Replace switch if meter indicates no continuity.

With switch plunger retracted, attach test leads to pins 5 and 6. Replace switch if meter indicates no continuity.

    More about «Diagnosis and testing»:

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    Red brake warning lamp

    Master cylinder/power booster

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    Disc brake rotor

    Brake drum

    Brake line and hoses

    Brake fluid contamination

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