Dtc No. 31: Lost Communication With Bcm; Dtc No. 33: Control Module Communication Bus Off; Dtc No. 51 / No. 52 / No. 53: Driver Side / Passenger Side / Rear End Door / Trunk Lid Request Switch Failure - Suzuki SX4 Service Manual

DTC No. 31: Lost Communication with BCM

Refer to "Troubleshooting for CAN-DTC in Section 1A".

DTC No. 33: Control Module Communication Bus Off

Refer to "Troubleshooting for CAN-DTC in Section 1A".
DTC No. 51 / No. 52 / No. 53: Driver Side / Passenger Side / Rear End Door / Trunk Lid Request
Switch Failure
Wiring Diagram
2
3
4
[A]: Keyless start control module connector (viewed from harness side)
1. Keyless start control module
2. Driver side door request switch
DTC Detecting Condition and Trouble Area
DTC detecting condition
DTC No. 51:
Input signal from driver side door request switch remains
ON, unchanged for 10 minutes or longer.
DTC No. 52:
Input signal from passenger side door request switch
remains ON, unchanged for 10 minutes or longer.
DTC No. 53:
Input signal from rear end door / trunk lid request switch
remains ON, unchanged for 10 minutes or longer.
DTC Confirmation Procedure
1) Clear DTC referring to "DTC Clearance".
2) Push request switch of each door.
3) Check DTC referring to "DTC Check".
DTC Troubleshooting
Step
1 Was "Keyless Start System Check" performed?
PPL
BLU/RED
YEL
[A]
20 19 18 16 15 14 11
37 36 34 33 32
Action
G16-16
G16-36
G16-32
G16
10 9 8 7 6 5 4 3 2
30 29 24 23
3. Passenger side door request switch
4. Rear end door / trunk lid request switch
Trouble area
• Driver side door request switch and its circuit
• Passenger side door request switch and its circuit
• Rear end door / trunk lid request switch and its circuit
• Keyless start control module
Yes
Go to Step 2.
Keyless Start System:
S7RW0AA504020
S7RW0AA504021
S7RW0AA504022
1
12V
1
I7RW01A50009-02
No
Go to "Keyless Start
System Check".
10E-28