Brake Pedal Position Switch Signal Circuit Troubleshooting - Honda S2000 Service Manual

1 4 .
t 5 .
t o .
13. lMeasure voltage between EPS control unit terminal
N o . 1 3 a n d b o d y g r o u n d .
EPS CONTROL UNIT 14P CONNECTOR
EPSLD IBLU/BLK}
W i r e s i d e o f f e m a l e t e r m i n a l s
ls there battery voltage?
YES-Substitute a known-good EPS control unit
and recheck,l
NO Go to step 14.
Turn the ignition switch OFF.
Disconnect ECM connector A (32P).
Check for continuity between body ground and
ECM connector terminal 426.
ECM CONNECTOR A (32PI
2 3
6 9
10
12
l 3 1 5 / 1 1 1 t 8 t 9 2A
2 l
25 26 27
a
29
30
32
EPSLD {BLU/ALK)
Wire side of female terminals
ls thete continuity?
YES - Repair short in the wire between the ECM
(426) and the EPS control unit.l
NO Substitute a known-good ECM and recheck
( s e e p a g e 1 1 - 5 ) . l f t h e v o l t a g e i s n o w n o r m a l ,
r e p l a c e t h e o r i g i n a l E C M . I
Brake Pedal Position Switch Signal
Circuit Troubleshooting
1 , C h e c k t h e b r a k e l i g h t s .
Are the brake lights on without prcssing the brake
pedal?
YES-lnspectthe brake pedal position switch
adjustment (see page 19-6). t
NO Go to step 2.
2. Press the brake pedal,
Do the brake lights come on?
YES Go to slep 3.
NO Go to step 4.
3. Measure voltage between ECM connector
terminals A32 and 820 with the brake pedal
pressed.
ls there battety voltage?
YES-The brake pedal position switch signal is
oK. t
NO - Repair open in the wire between the ECM
(A32) and the brake pedal position switch.l
Inspect the STOP ('l0A) fuse in the under-hood
fuse/relay box.
ls the f use OK?
YES-'Repair open in the wire between the brake
pedal position switch and the STOP (10A) fuse.
Inspect the brake pedal position switch (see page 4-
4 7 1 . a
NO - Repair short in the wire between the ECM
{A32) and the STOP (10A) fuse. Replace the STOP
( 1 0 A ) f u s e . r
I
11-99