Suzuki Grand Vitara XL-7 Service Manual page 583

8G-10 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
TABLE A SCAN TOOL CAN NOT COMMUNICATE WITH IMMOBILIZER CONTROL
MODULE
STEP
1 Check voltage between G09-8 terminal and
body ground with ignition switch ON.
Is it 10 – 14 V?
2 Check voltage between G09-3 terminal and
body ground.
Is it 10 – 14 V?
3 Is there continuity between G09-4 terminal
and body ground?
4 Check voltage between "PPL/WHT" wire
terminal of DLC and body ground with ignition
switch ON.
Is it 4 – 5 V?
ACTION YES
Go to Step 2.
Go to Step 3.
Go to Step 4.
D Poor G09-8, G09-3,
G09-4 or G09-5
connection
If connection and line are
OK, substitute a known-
good Immobilizer Control
Module and recheck.
1. Main fuse
2. Ignition switch
3. Immobilizer Control Module
4. Data link connector (DLC)
5. "IG METER" fuse
6. "DOME" fuse
NO
D "BLK/WHT" wire
open
D "IG METER" fuse
broken
D "WHT" wire open
D "DOME" fuse broken
"BLK" wire open
"PPL/WHT" wire open