Dtc P0504: Brake Switch "A"/"B" Correlation (For J20 Engine) - Suzuki Grand Vitara Service Manual

DTC P0504: Brake Switch "A"/"B" Correlation (For J20 Engine)

Wiring Diagram
WHT/GRN
15 14 13 12 11
30 29 28 27 26
45 44 43 42 41
60 59 58 57 56
1. Stop lamp (brake pedal) switch
2. Stop lamp switch
DTC Detecting Condition and Trouble Area
DTC detecting condition
Brake pedal switch signal is inconsistent with stop lamp
switch signal.
(1 driving cycle detection logic but MIL does not light up)
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool to DLC.
2) Turn ON ignition switch and clear DTC.
3) Start engine and warm up to normal operating temperature. (ECT approx. 90 – 95 °C, 194 – 203 °F)
4) Drive vehicle at 50 km/h (80 mph) or higher for 3 min. or more.
5) Stop vehicle.
6) Depress brake pedal for 3 times.
7) Check DTC and pending DTC.
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7
WHT
6
BLK/YEL
1
BLU/BLK
3
GRN
2
GRN/WHT
E23
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
3. Brake pedal switch
4. ECM
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Engine General Information and Diagnosis:
YEL/GRN
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. Stop lamp
6. "CRUISE" fuse
• Stop lamp (brake pedal) switch and/or its circuit
• ECM
4
E23-8
12V
E23-20
C37
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
7. "STOP" fuse
Trouble area
1A-152
S5JB0A1104096
2 1
17 16
32 31
47 46
I5JB0A110107-02