Suzuki GRAND VITARA JB416 Service Manual page 445

Step
8 Check for short of wire circuits between steering lock
unit and keyless start control module
1) Measure resistance at the following connector terminals.
• Between "G22-3", "G22-7" and "G22-8" terminal of
steering lock unit connector.
• Between "G42-20", "G42-29" and "G42-30" terminal of
keyless start control module.
Is each resistance infinity?
9 Check for short to ground wire circuit in wire circuits
between steering lock unit and keyless start control
module
1) Measure resistance at the following connector terminals.
• Between "G22-3" terminal of steering lock unit
connector and vehicle body ground.
• Between "G22-7" terminal of steering lock unit
connector and vehicle body ground.
• Between "G22-8" terminal of steering lock unit
connector and vehicle body ground.
• Between "G42-20" terminal of keyless start control
module connector and vehicle body ground.
• Between "G42-29" terminal of keyless start control
module connector and vehicle body ground.
• Between "G42-30" terminal of keyless start control
module connector and vehicle body ground.
Is each resistance infinity?
10 Check for short to power supply wire circuit in wire
circuits between steering lock unit and keyless start
control module
1) Measure voltage at the following connector terminals
with ignition switch turned ON.
• Between "G22-3" terminal of steering lock unit
connector and vehicle body ground.
• Between "G22-7" terminal of steering lock unit
connector and vehicle body ground.
• Between "G22-8" terminal of steering lock unit
connector and vehicle body ground.
• Between "G42-20" terminal of keyless start control
module connector and vehicle body ground.
• Between "G42-29" terminal of keyless start control
module connector and vehicle body ground.
• Between "G42-30" terminal of keyless start control
module connector and vehicle body ground.
Is each voltage 0 – 1 V?
Action
Immobilizer Control System:
Yes
Go to Step 9.
Go to Step 10.
Replace keyless start
control module with a
known-good one and
recheck. If DTC P1615
is still detected, replace
ECM with a known-good
one and recheck.
10C-7
No
Make sure of insulation
of each wire circuit.
Repair short to ground
wire circuit in
malfunctional wire
circuit.
Repair short to power
supply wire circuit in
malfunctional wire
circuit.