Dtc B1073: Driver Forward Impact-Sensor Circuit Shorted To Ground - Suzuki SX4 Service Manual

DTC B1073: Driver Forward Impact-Sensor Circuit Shorted to Ground

Wiring Diagram
WHT
GRN
6
4 5
BLK
3
2
1
1. Battery
2. Fuse
3. Main fuse box
4. "IGN" fuse
DTC Detecting Condition and Trouble Area
DTC detecting condition
Forward impact-sensor circuit has been shorted to ground
for more than 4 sec.
DTC Troubleshooting
Step
1 Was "Air Bag Diagnostic System Check Flow" performed?
2 Forward impact-sensor circuit check
1) Disconnect forward impact-sensor connector "E40".
2) Disconnect SDM connector "L04".
3) Check for proper connection to SDM connector at
terminals "L04-50" and "L04-51".
4) Measure resistance between "L04-50" terminal and body
ground.
Special tool
(A): 09932–76010
Is each measured resistance infinity?
"L313" 5V
8
12V
7
RED
L04-27 12
BLK
9
L04-28
"L04"
5. Individual circuit fuse box No.1
6. Ignition switch
7. "A/B" fuse
8. Junction block assembly
Action
(A)
"L04-50" "L04-51"
I7RW01821027-01
10
30V
"L04"
30V
ORN
13
L04-50
PNK/BLK
L04-51
9. Ground for air bag system
10. SDM
11. Driver forward impact-sensor
12. DC / DC converter
Trouble area
• Forward impact-sensor
• Forward impact-sensor circuit
• SDM
Yes
Go to Step 2.
Go to Step 3.
Air Bag System: 8B-66
S7RW0A8204036
"L372" "E388"
"E40"
ORN
11
PNK/BLK
I6RW0C820012-01
13. Back up capacitor
No
Go to "Air Bag
Diagnostic System
Check Flow".
Repair short to ground
in defective circuit.