Suzuki WagonR+ RB310 Service Manual page 3037

10B-20 AIR BAG SYSTEM
TABLE E: SCAN TOOL CANNOT COMMUNICATE WITH SDM
STEP
1 1) Make sure that SUZUKI scan tool is free
from malfunction and correct cartridge
for air bag system is used.
2) Ignition switch OFF.
3) Check proper connection of SUZUKI
scan tool to DLC.
Is connection in good condition?
2 1) Check if communication is possible by
trying communication with other control
module (ECM, ICM (if equipped), P/S
control module (if equipped) or ABS
control module (if equipped)).
Is it possible to communicate with other
control module?
3 1) With ignition switch OFF, disconnect
Q03 connector from SDM.
2) Check proper connection at "W/R" wire
terminal for DLC in Q03 connector.
3) If OK, then check continuity between
"W/R" wire terminal in Q03 connector
and Q06-28 terminal of SDM connector.
(See figure below.)
Is there continuity?
Fig. for STEP 1
Special Tool
(A): 09932-76010
NOTE:
Upon completion of inspection and repair work, perform following items.
1) Reconnect all air bag system components, ensure all components are properly mounted.
2) Repeat "AIR BAG DIAGNOSTIC SYSTEM CHECK" to confirm that the trouble has been corrected.
ACTION
1
2
1. DLC
2. Scan tool
YES
Go to step 2.
Go to step 3.
Substitute a known-good
SDM and recheck.
Fig. STEP 3
1. Q03 connector (air bag harness side)
2. "W / R" wire terminal
3. SDM connector (Q06 connector)
4. Q06-28 terminal
NO
Properly connect SUZUKI
scan tool to DLC.
Repair open in common
section of serial data circuit
("W /R" wire circuit) used
by all controllers or short to
ground or power circuit
which has occurred
somewhere in serial data
circuit ("W/R" wire circuit).
Repair high resistance or
open in "W/R" wire circuit
(in air bag harness).