Bcm (Included In Junction Block) Removal And Installation - Suzuki SX4 Service Manual

10B-29 Body Electrical Control System:
Reference waveform No. 9
Rear wiper switch signal (1)
Measurement terminal Rear wiper INT switch
Oscilloscope setting
Measurement
condition
BCM (Included in Junction Block) Removal and
Installation
CAUTION
!
Do not attempt removal of BCM from junction
block as it may cause contact failure.
If there is faulty condition in BCM, replace
junction block assembly.
Removal
1) Disconnect negative cable from battery.
2) Disable air bag system referring to "Disabling Air
Bag System in Section 8B".
3) Remove dash side trim (1) and steering column hole
cover (2).
4) Remove junction block mounting nuts (3).
CH2: "G04-21" to "G271-3"
Rear wiper LOW switch
CH2: "G04-22" to "G271-3"
CH2: 5 V/DIV
TIME: 10 ms/DIV
Rear wiper INT switch:
• Ignition switch is at ON
position and rear wiper
switch is at any position
other than INT position
Rear wiper LOW switch:
• Ignition switch is at ON
position and rear wiper
switch is at any position
other than LOW position
I4RS0AA20024-02
Repair Instructions
S7RW0AA206001
Reference waveform No. 10
SDM communication signal (1)
Measurement terminal CH2: "L314-2" to "G271-3"
Oscilloscope setting
Measurement
condition
3
1
4
5
3
4. BCM
CH2: 2 V / DIV
TIME: 400 ms / DIV
Ignition switch is at ON
position
I4RS0AA20026-02
2
I5RW0AA20015-01
5. Junction block