Brake light on without brake pedal depressed

Hi,

Chances are you are correct; However, make sure there isn't an adjustment issue. If it is out of adjustment, there is a good chance it will stay on.

Now, the Sunny was never offered in the US, but I believe it is the same as the Nissan Sentra.

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Here are directions for adjustment on the Sentra. See if it reflects the components on your vehicle.

If it does, the adjustment doesn't fix the issue, then replace the switch.

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Adjustment / Pics Correlate with the directions.

1990 Nissan-Datsun Sentra Sedan L4-1597cc 1.6L SOHC (GA16i)
Adjustments
Vehicle Brakes and Traction Control Brake Pedal Assy Adjustments
ADJUSTMENTS
Brake Pedal Adjustment

pic 1

Fig. 7 Brake Pedal Free Height & Depressed Height Specifications

Pic 2

Fig. 8 Adjusting Input Rod

pic 3

1. Adjust brake pedal free height dimension ``H'' in Fig. 6, to specifications Fig. 7, using brake booster input rod Fig. 8. Ensure tip of input rod stay inside clevis pin.
2. With motor running, measure brake pedal depressed height dimension ``D''in Fig. 6, is within specifications Fig. 7. If not within specifications check for leak in brake system, air in system, problem with master cylinder, wheel cylinder or brake caliper. Repair or replace as necessary.
3. Measure clearance dimension ``C'' Fig. 6. Clearance between pedal stopper and threaded end of brake light switch should be.012-0.39 inches. Clearance between pedal stopper and threaded end of A.S.C.D switch if equipped, should be.012-0.39 inches.
4. Measure pedal freeplay dimension ``A'' Fig. 6. Pedal freeplay should be between.04-.12 inches.

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Let me know if this helps or if you have other questions.

Take care,
Joe

There is a hole? The pushrod needs to make contact to actuate the switch and make it turn the light off.

If you could get a couple of pics and upload them for me to see, It may be helpful.

Let me know.

Joe

Hi,

No problem. When the weather gets a bit more tolerable, let me know. We'll get it fixed properly.

Take care,
Joe