Suzuki GA413, Service Manual

Page: 973 / 1246

1. Main fuse
2. Main relay
3. Immobilizer Control Module
4. Coil antenna
5. To ECM
8G-14 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
GA413
supple
DTC13 NO TRANSPONDER CODE TRANSMITTED OR COIL ANTENNA
OPENED/SHORTED
DESCRIPTION:
Immobilizer Control Module energizes the coil antenna when the ignition switch is ON and reads Transponder code
from the ignition key. When Immobilizer Control Module cannot read Transponder code from the ignition key even
when the coil antenna is energized, this DTC is set.
INSPECTION:
STEP ACTION YES NO
1 Dose ignition key being used have built-in transponder?
(See Fig. 1)
Go to Step 2.
Replace ignition key with
built-in transponder and fol-
low “DIAGNOSTIC FLOW
TABLE” again.
2 1) Disconnect coil antenna coupler with ignition switch
turned OFF.
2) Is there continuity between coil antenna coupler termi-
nals A and B? (See Fig. 2)
Go to Step 3. Coil antenna open.
3 Measure resistance between terminals of coil antenna
coupler and body ground. (See Fig. 3)
Is it (infinity) ?
Go to Step 4. Coil antenna shorted to
ground.
4 1) With coil antenna coupler disconnected, disconnect
Immobilizer Control Module coupler.
2) Measure resistance between coil antenna terminals of
Immobilizer Control Module coupler. (See Fig. 4)
Is it (infinity) ?
Go to Step 5. “G/B” wire shorted to “G”
wire.
5 Measure resistance between terminal E64-4 of Immobiliz-
er Control Module coupler and body ground. (See Fig. 5)
Is it (infinity) ?
Go to Step 6. “G/B” wire shorted to
ground.
6 Measure resistance between terminal E64-3 of Immobiliz-
er Control Module coupler and body ground. (See Fig. 6)
Is it (infinity) ?
Go to Step 7. “G” wire shorted to ground.