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10B-20 AIR BAG SYSTEM
Table D – SDM Cannot Communicate Through the Serial Data Circuit
WIRING DIAGRAM
BLK/YEL
1
2
BLK/YEL
YEL
12
WHT/RED
1
7
1. From main fuse
2. Ignition switch
3. "METER" fuse
4. "AIR BAG" warning lamp in combination meter
CAUTION:
• Be sure to perform "Air Bag Diagnostic System Check" before starting diagnosis according to flow
table.
• When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to "Intermittents and Poor Connections" in
this section.
• If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.
TABLE TEST DESCRIPTION
STEP 1: An improper connection to the data link connector (DLC) will prevent communications from being
established.
STEP 2: This test checks whether it is possible to communicate with other control module.
STEP 3: This test checks for an open in "Serial data" circuit.
DIAGNOSTIC FLOW TABLE
Step
1
1) Make sure that Suzuki Scan Tool is free from malfunc-
tion and correct PC card.
2) Ignition switch OFF.
3) Check proper connection of Suzuki Scan Tool to DLC.
Is connection in good condition?
BLU/ORN
3
5
BLK
10
BLU
11
BLK/ORN
5. "AIR BAG" fuse
6. SDM
7. DLC
8. To ECM, and ABS control module (if equipped)
Action
"L63"
"G75"
YEL/RED
YEL/RED
4
10
BLK
9
RED
BLU
8
Yes
Go to step 2. Properly connect Suzuki
"L21"
L21-30
LA
BLK
L21-31 GRN
RED
L21-32
IG
BLU
L21-28
SDL
+30V+5V
9. Ground for air bag system
10. Ground on body
11. Ground on Engine block
12. Immobilizer control module (if equipped)
No
Scan Tool to DLC.
6
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