Suzuki sq-416-420-625 Service Manual page 602

8G-14 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
TABLE A DTC IS NOT OUTPUT FROM DIAGNOSTIC OUTPUT TERMINAL
STEP
1 Check voltage between A3 terminal
and body ground with ignition switch
turned ON.
Is it 10 – 14V?
2 1) Connect voltmeter between A5
terminal and body ground.
2) Does voltmeter indicator deflect?
3 1) Connect voltmeter between diag-
nostic output terminal of immobiliz-
er diagnostic coupler and body
ground.
2) Is it possible to read DTC by check-
ing deflection of voltmeter indicator?
ACTION YES
Go to Step 2. "(f)" wire open.
D Poor A3, A5 or A7 connection.
Go to Step 3.
D "(h)" wire of A7 terminal open.
D "(m)" wire between A5 terminal and
If wire and connections are OK, substi-
tute a known-good Immobilizer Control
Module and recheck.
NOTE:
After replacing with a known-good
Immobilizer Control Module, register
ECM/Immobilizer Control Module
code in ECM / PCM and Transponder
code and ECM/Immobilizer Control
Module code in Immobilizer Control
Module by performing procedure
described in "Procedure after Immo-
bilizer Control Module Replace-
ment" section.
"(n)" wire of ground "(m)" wire between A5 terminal and diag-
terminal for immo- nostic output terminal of immobilizer
bilizer diagnostic diagnostic coupler open.
coupler open.
In cabin
- 1. Main fuse
- 2. Main relay
- 3. Immobilizer Control Module
- 4. Immobilizer diagnostic coupler
4-1. Ground terminal
4-2. Diagnostic output terminal
- 5. To ECM / PCM
NO
diagnostic output terminal of immobi-
lizer diagnostic coupler short.