TROUBLE DIAGNOSES — Diagnostic Procedure 4 (Cont'd) — Stoplamp Switch Circuit (L.E.D. flashing number 10)
BR-66flowchartStoplamp-switch test only branches into the diag tree if the technician actually pressed the brake pedal during self-diagnoses — otherwise the false-positive resolution is just to redo the self-diag.
Diagnostic Procedure 4 (Cont'd)
STOPLAMP SWITCH CIRCUIT (L.E.D. flashing number 10)
1
Did you press the brake pedal while performing self-diagnoses?
NO
Perform self-diagnoses again.
YES
2
A — CHECK STOPLAMP SWITCH POWER SUPPLY CIRCUIT. Remove connector of ABS Control Unit. Check voltage between terminal ㊸ and body ground. Voltage: When pressing brake pedal: 12V. When not pressing brake pedal: 0V.
N.G.
Repair stoplamp switch or power supply.
O.K.
3
Replace ABS Control Unit.
| Specification | Value |
|---|---|
| ABS C/U pin 43 voltage — brake pedal pressed | 12V |
| ABS C/U pin 43 voltage — brake pedal released | 0V |
ABS C/U pin 43 voltage — brake pedal pressed
12V
ABS C/U pin 43 voltage — brake pedal released
0V