Dtc P0504: Brake Switch "A"/"B" Correlation 1A-104 - Suzuki 2006 SX4 Service Manual

1A-104 Engine General Information and Diagnosis:
DTC Troubleshooting
NOTE
Make sure that DTC of CAN communication is not detected by ECM.
Step
1 Was "Engine and Emission Control System Check"
performed?
2 Vehicle speed signal check
Is vehicle speed displayed on scan tool in Step 4) and 5) of
"DTC Confirmation Procedure"?
3 DTC check in ABS / EPS® control module
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check DTC in ABS control module.
Is there DTC(s) of front wheel speed sensor detected?
DTC P0504: Brake Switch "A"/"B" Correlation
Wiring Diagram
8
WHT
9
15 14 13 12 11
30 29 28 27 26
45 44 43 42 41
60 59 58 57 56
A1: Power supply circuit of brake pedal switch
A2: Control circuit of brake pedal switch
B1: Power supply circuit of brake light switch
B2: Control circuit of brake light switch
Action
7
WHT
6
GRN
A1
1
GRY/RED
3
B1
GRN
2
GRN/WHT
E01
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
1. Brake switch
2. Brake light switch
3. Brake pedal switch
4. ECM
Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
Go to applicable DTC
diag. Flow.
A2
GRN/YEL
B2
GRN/WHT
5
2 1 15 14 13 12 11
17 16 30 29 28 27 26
32 31 45 44 43 42 41
47 46 60 59 58 57 56
5. Brake light
6. "IG1 SIG" fuse
7. "STOP" fuse
8. Ignition switch
Yes
Go to "Engine and
Emission Control
System Check".
Go to Step 3.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00". If OK, substitute a
known-good ECM and
recheck.
4
E01-8
12V
E01-20
C01
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
9. "IGN" fuse
No
S6RW0C1104051
2 1
17 16
32 31
47 46
I7RW01110070-02