Inspection and Verification
Visual Inspection Chart
Mechanical
Electrical
Symptom Chart
NOTE:
Refer to Wiring Diagrams Cell 90 for schematic and connector information.
Symptom Chart
Condition
Possible Sources
Action
PINPOINT TEST H: THE STOPLAMPS ARE INOPERATIVE
Test Step Result / Action to Take
H1 CHECK CIRCUIT 10 (LG/RD) FOR AN OPEN
Disconnect: BPP Switch C278.
Measure the voltage between BPP switch C278 pin 1, circuit 10 (LG/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to H2 .
No
REPAIR the circuit. TEST the system for normal operation.
H2 CHECK THE BPP SWITCH
Connect a fused jumper wire (20A) between BPP C278 pin 1, circuit 10 (LG/RD), harness side and BPP C278 pin 2, circuit 511 (LG), harness side.
Do the stoplamps operate?
Yes
INSTALL a new BPP switch. REFER to Brake Pedal Position (BPP) Switch in this section.
No
REPAIR circuit 511 (LG). TEST the system for normal operation.
×
It
can be faulty brake light switch causing the problem or its wiring short for switch.
==========
To
trouble shoot brake related problem, check the help links mentioned
below:-----
Click
the link:----
-----------
----------
http://schematicsdiagram.blogspot.in/2012/04/brake-lights-not-working-on-1989-buick.html
-------
http://technoanswers.blogspot.in/2012/02/how-to-replace-brake-light-switch-on.html
---------------
http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-parking-turn-and-brake.html
----------
http://schematicsdiagram.blogspot.com/2011/12/upper-brake-lights-workbut-low.html
------------
http://howtobyme.blogspot.in/2012/06/1997-cadillac-catera-how-to-replace.html
------------
http://technoanswers.blogspot.in/2012/02/1996-chrysler-lhs-brake-light-circuit.html
----------
------------
http://schematicsdiagram.blogspot.com/2011/12/one-brake-light-on-driver-side-not.html
----------
http://repairhelpcenter.blogspot.in/2012/06/2007-kia-rio-brake-light-fuse-box.html
-------------
http://technoanswers.blogspot.in/2012/03/overhead-brake-lights-not-working-on.html
---------
http://howtobyme.blogspot.in/2012/05/2004-ford-mustang-brake-light-fuse.html
---------
These
will help.
Thanks.
Turn signal tail lights and BRAKE LIGHTS NOT WORKING
It
can be faulty brake light switch causing the problem or its blown brake light bulb.
First check and confirm brake light lamp is working and that's not
the case.
For turn signal not working it can be faulty turn signal switch or its issue with wiring:----
==========
To
trouble shoot brake and turn signal related problem, check the help links mentioned
below:-----
Click
the link:----
1996 Buick Regal Grand Sport Brake light
Switch Location?
http://schematicsdiagram.blogspot.in/2012/04/1996-buick-regal-gran-sport-brake-light.html
-----------
No brake lights on Buick?
http://schematicsdiagram.blogspot.in/2012/04/no-brake-lights-on-buick.html
----------
Brake lights not working on 1989 BUICK REGAL?
http://schematicsdiagram.blogspot.in/2012/04/brake-lights-not-working-on-1989-buick.html
-------
How to replace Brake light switch on Chevrolet Tahoe?
http://technoanswers.blogspot.in/2012/02/how-to-replace-brake-light-switch-on.html
---------------
How to
replace Parking, turn, and Brake Lights on car?
http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-parking-turn-and-brake.html
----------
Upper brake lights work,
but low brake light not working?
http://schematicsdiagram.blogspot.com/2011/12/upper-brake-lights-workbut-low.html
------------
1997 Cadillac Catera: How
to replace Brake Light Switch?
http://howtobyme.blogspot.in/2012/06/1997-cadillac-catera-how-to-replace.html
------------
2003 Chevrolet S10 Tail light Fuse
http://schematicsdiagram.blogspot.com/2012/11/2003-chevrolet-s10-tail-light-fuse.html
---------
Chevrolet Parking light and Tail lamp light
Wiring diagram
http://schematicsdiagram.blogspot.com/2012/11/chevrolet-parking-light-and-tail-lamp.html
----------
Car Tail Lights Not Working?
http://schematicsdiagram.blogspot.com/2011/12/car-tail-lights-not-working.html
----------
Turn Signal Not working
http://technoanswers.blogspot.com/2012/11/turn-signal-not-working.html
----------
Right turn signal not working on Pontiac Car?
http://schematicsdiagram.blogspot.com/2011/12/right-turn-signal-not-working-on.html
--------
Only one side indicator light working on car?
http://schematicsdiagram.blogspot.com/2011/12/only-one-side-indicator-light-working.html
-----------
Turn signals not working on 1987 Jeep
Wagoneer?
http://schematicsdiagram.blogspot.com/2011/12/turn-signals-not-working-on-1987-jeep.html
1996 Chrysler LHS brake light circuit wiring
diagram?
http://technoanswers.blogspot.in/2012/02/1996-chrysler-lhs-brake-light-circuit.html
----------
How to replace rear Brake
lights on 2004 Toyota RAV4?
http://schematicsdiagram.blogspot.in/2012/02/how-to-replace-rear-brake-lights-on.html
------------
One brake light on driver
side not working, but other lights work?
http://schematicsdiagram.blogspot.com/2011/12/one-brake-light-on-driver-side-not.html
----------
2002 Lincoln Town car Fuse Box
http://schematicsdiagram.blogspot.com/2012/11/2002-lincoln-town-car-fuse-box.html
2007 KIA Rio: Brake Light Fuse Box
Diagram?
http://repairhelpcenter.blogspot.in/2012/06/2007-kia-rio-brake-light-fuse-box.html
-------------
Overhead Brake lights not working on 1999 GMC
Sierra 4x4?
http://technoanswers.blogspot.in/2012/03/overhead-brake-lights-not-working-on.html
---------
2004 Ford Mustang: Brake
light Fuse Location?
http://howtobyme.blogspot.in/2012/05/2004-ford-mustang-brake-light-fuse.html
---------
These
will help.
Thanks.
http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-parking-turn-and-brake.html
----------
Upper brake lights work, but low brake light
not working?
http://schematicsdiagram.blogspot.com/2011/12/upper-brake-lights-workbut-low.html
------------
1997 Cadillac Catera: How to replace Brake
Light Switch?
http://howtobyme.blogspot.in/2012/06/1997-cadillac-catera-how-to-replace.html
------------1996 Chrysler LHS brake light circuit wiring diagram?
http://technoanswers.blogspot.in/2012/02/1996-chrysler-lhs-brake-light-circuit.html
----------How to replace rear Brake lights on 2004
Toyota RAV4?
http://schematicsdiagram.blogspot.in/2012/02/how-to-replace-rear-brake-lights-on.html
------------
One brake light on driver side not working,
but other lights work?
http://schematicsdiagram.blogspot.com/2011/12/one-brake-light-on-driver-side-not.html
----------
2002 Lincoln Town car Fuse Box
http://schematicsdiagram.blogspot.com/2012/11/2002-lincoln-town-car-fuse-box.html
2007 KIA Rio:
Brake Light Fuse Box Diagram?
http://repairhelpcenter.blogspot.in/2012/06/2007-kia-rio-brake-light-fuse-box.html
-------------Overhead Brake lights not working on 1999 GMC Sierra 4x4?
http://technoanswers.blogspot.in/2012/03/overhead-brake-lights-not-working-on.html
---------2004 Ford Mustang: Brake light Fuse Location?
http://howtobyme.blogspot.in/2012/05/2004-ford-mustang-brake-light-fuse.html
---------These will help.Thanks.
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