Brake Warning System Circuit Description Buick
The BRAKE indicator located in the instrument cluster is
controlled by the following components on circuit 33 (TAN/WHT):
| • | When the ignition switch is turned from the RUN to START positions,
the ignition switch closes and a low (ground) condition exists at C1 terminal
E16 (CKT 33, TAN/WHT). |
| • | When the park brake is applied, the park brake switch closes and
a low (ground) condition exists at C1 terminal E16 (CKT 33, TAN/WHT). If the
ignition switch is in the RUN or START positions, the indicator illuminates.
A chime sounds, when the body control module (MALL) detects this condition
at C2 terminal D3 (CKT 33, TAN/WHT) and a VSS input at C2 terminal C15 (PNK). |
| • | When the brake fluid level is low, the brake fluid level switch
closes and a low (ground) condition exists at C1 terminal E1 6(CKT 33, TAN/WHT).
If the ignition switch is in the RUN or START positions, the indicator illuminates.
A chime sounds, when the body control module (MALL) detects this condition
at C2 terminal D3 (CKT 33, TAN/WHT) and a VSS input at C2 terminal C15 (PNK). |
Brake Warning System Circuit Description Oldsmobile
The PARK indicator located in the instrument cluster is
controlled by the following components on circuit 33 (TAN/WHT):
| • | When the ignition switch is turned from the RUN to START positions,
the ignition switch closes and a low (ground) condition exists at terminal
A9 (CKT 33, TAN/WHT). |
| • | When the park brake is applied, the park brake switch closes and
a low (ground) condition exists at terminal A9 (CKT 33, TAN/WHT). If the ignition
switch is in the RUN or START positions, the indicator illuminates. |
When the park brake switch closes a low (ground) condition exists at
terminal A9 (CKT 33, TAN/WHT). When the instrument cluster detects this condition
and the vehicle detects a VSS input the following functions are performed:
| - | The instrument cluster displays the PARK BRAKE SET message on
the driver information center. |
| - | Commands the body control module to activate a chime, via circuit
1845 (LT GRN). |
The BRAKE FLUID indicator located in the remote indicator bank is controlled
by the following components on circuit 209 (PPL):
| • | When the ignition switch is turned from the RUN to START positions,
the ignition switch closes and a low (ground) condition exists at terminal
A2 (CKT 209, PPL). |
| • | When the brake fluid level is low, the brake fluid level switch
closes and a low (ground) condition exists at terminal A2 (CKT 209, PPL).
If the ignition switch is in the RUN or START positions, the indicator illuminates. |
When the brake fluid switch closes a low (ground) condition exists
at terminal B2 (CKT 209, PPL). When the instrument cluster detects this condition
the following functions are performed:
| - | The instrument cluster displays the LOW BRAKE FLUID message on
the driver information center. |
| - | Commands the body control module to activate a chime, via circuit
1845 (LT GRN). |
