Suzuki Ignis Service Manual page 432

6-58 ENGINE GENERAL INFORMATION AND DIAGNOSIS
DTC CONFIRMATION PROCEDURE
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select "DTC" mode no scan tool and check DTC.
INSPECTION
Step
1 Was "ENGINE DIAG. FLOW TABLE" per-
formed?
2 Check ECT Sensor and its Circuit.
1) Connect scan tool with ignition switch OFF.
2) Turn ignition switch ON.
3) Check engine coolant temp. displayed on
scan tool. See Fig. 1.
Is – 40°C (– 40°F) or 119°C (246°F) indicated?
3 Check Wire Harness.
1) Disconnect ECT sensor connector.
2) Check engine coolant temp. displayed on
scan tool.
Is – 40°C (– 40°F) indicated?
4 Does scan tool indicate – 40°C (– 40°F) at Step
2.
5 Check Wire Harness.
1) Disconnect ECT sensor connector with igni-
tion switch OFF.
2) Check for proper connection to ECT sensor
at "ORN" and "LT GRN" wire terminals.
If OK, then with ignition switch ON, is voltage
applied to "LT GRN" wire terminal about 4 – 6
V? See Fig. 2.
6 Check Wire Harness.
1) Using service wire, connect ECT sensor
connector terminals. See Fig. 3.
2) Turn ignition switch ON and check engine
coolant temp. displayed on scan tool.
Is 119°C (246°F) indicated?
Fig. 1 for Step 2
Action Yes
Go to Step 2.
Go to Step 3.
Replace ECT sensor.
Go to Step 6.
Go to Step 4.
Replace ECT sensor.
No
Go to "ENGINE DIAG.
FLOW TABLE".
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection" in
Section 0 A.
"LT GRN" wire shorted to
ground.
If wire is OK, substitute a
known-good ECM and
recheck.
Go to Step 5.
"LT GRN" wire open or
shorted to power, or poor
C42-14 connection.
If wire and connection are
OK, substitute a known-
good ECM and recheck.
"ORN" wire open or poor
C42-10 connection.
If wire and connection are
OK, substitute a known-
good ECM and recheck.