Suzuki Wagon R Manual page 3576

DTC B3059 No Request from ECM
Wiring Circuit
Refer to "Wiring Circuit" in this section.
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
• No request from ECM via SVS lamp circuit
• Ignition switch is not reset correctly.
Troubleshooting
Step
1 Turn ignition switch to (I) position or (•) position
for more than 5 seconds, then turn ignition
switch to ON (II) position.
Recheck DTC.
Is DTC B3059 current?
2 1) Check for proper connection to ECM at
E23-1 terminal.
Is it in good condition?
3 1) Check for proper connection to immobilizer
control module at G17-2 terminal.
Is it in good condition?
4 1) Check GRY/RED line for open or short.
Is it in good condition?
Action
IMMOBILIZER CONTROL SYSTEM (Z13DT ENGINE MODEL) 8G3-13
Trouble Area
• SVS lamp circuit
• Communication between ECM and Immobilizer
Control Module
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Substitute a known-good
ECM according to "Proce-
dure for ECM Replace-
ment" in this section and
recheck.
No
Communication between
ECM and Immobilizer
Control Module was not
finished correctly.
Repair or replace.
Repair or replace.
Repair or replace.