10B-20 AIR BAG SYSTEM
2 1) Check if communication is possible by trying communi-
cation with other control module (ECM or ABS control
module (if equipped)).
Is it possible to communicate with other control module?
Go to step 3. Repair open in common
section of serial data circuit
(“WHT/RED” wire circuit)
used by all controllers or
short to ground or power
circuit which has occurred
some-where in serial data
circuit (“WHT/RED” wire
circuit).
3 1) With ignition switch ON, check voltage between DLC
terminal “G09-16” (“WHT/BLU” wire) terminal and body
ground.
Is voltage 10 – 14 V?
Go to step 4. Repair open in serial data
power circuit (“BLU/WHT”
wire circuit).
4 1) Check resistance the following serial data ground cir-
cuits.
• Between DLC terminal “G09-4” (“BLK” wire) terminal
and body ground.
• Between DLC terminal “G09-5” (“BRN” wire) terminal
and body ground.
Are resistances 0 – 1 Ω respectively?
Go to step 5. Repair open in serial data
ground circuit (“BLK” or
“BRN” wire circuit).
5 1) With ignition switch OFF, disconnect SDM connector
“G66”.
2) Check proper connection at “G66-28” (“WHT/RED”
wire) of SDM connector “G66”.
3) If OK, then check resistance between “G66-28” (“WHT/
RED”) of SDM connector “G66” and “G09-7” (“WHT/
RED”) of DLC “G09”.
Is resistance 0 – 1 Ω?
Substitute a
known-good
SDM and
recheck.
Repair high resistance or
open in “WHT/RED” wire
circuit (between SDM con-
nector terminal “G66-28”
and DLC).
Step Action Yes No
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