Diagnostic Flow Table <Vehicle Equipped - Suzuki sq-416-420-625 Service Manual

DIAGNOSTIC FLOW TABLE
<Vehicle equipped with monitor coupler>
STEP
1 1) Make sure that diagnosis switch
terminal in monitor coupler is not
grounded by service wire. See Fig. 1.
2) Check malfunction indicator lamp
while ignition switch is ON (but without
starting engine). See Fig. 2.
Dose malfunction indicator lamp flash?
2 1) Using service wire, ground diagnosis
switch terminal in monitor coupler.
See Fig. 3.
Dose malfunction indicator lamp flash?
3 Dose malfunction indicator lamp flash as
Fig. 4?
4 1) Check DTC stored in immobilizer
control module referring to
"DIAGNOSTIC TROUBLE CODE
CHECK (IMMOBILIZER CONTROL
MODULE)" in this section.
Is there any DTC(s)?
5 1) Check DTC stored in ECM/PCM
referring to "DIAGNOSTIC TROUBLE
CODE CHECK (ECM/PCM)" in this
section.
Is there any DTC(s)?
Fig. 1 for Step 1
Fig. 4 for Step 3
"CHECK ENGINE" light
ON
OFF
ACTION
Fig. 2 for Step 1
0.5
TIME (sec.)
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-9
YES
Go to Step 3.
Immobilizer control
system is in good
condition.
Go to Step 4.
Go to flow table for
DTC No.
Go to flow table for
DTC No.
NO
D If malfunction indicator lamp
remains ON, go to Step 2.
D If malfunction indicator lamp
remains OFF, go to
"MALFUNCTION INDICATOR
LAMP CHECK" in Section 6.
Go to "MALFUNCTION
INDICATOR LAMP CHECK" in
Section 6.
Go to "MALFUNCTION
INDICATOR LAMP CHECK" in
Section 6.
Go to Step 5.
Substitute a known-good ECM/
PCM and recheck.
NOTE:
After replacing with a known-
good ECM/PCM, register
ECM/Immobilizer Control
Module code in ECM/PCM by
performing procedure described
in "Procedure after ECM/PCM
Replacement" section.
Fig. 3 for Step 2
1. Monitor coupler
2. Service wire
A: Diagnosis switch terminal
B: Ground terminal