Suzuki Jimny Service Manual page 411

6-54 ENGINE GENERAL INFORMATION AND DIAGNOSIS
INSPECTION
Step
1 Was "Engine Diag. Flow Table" performed?
2 Check ECT Sensor and Its Circuit.
1) Connect scan tool with ignition switch OFF.
See Fig. 1.
2) Turn ignition switch ON.
3) Check engine coolant temp. displayed on
scan tool.
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 "B/Bl" and "G/B" wire terminals.
See Fig. 2.
3) If OK, then with ignition switch ON.
Is voltage applied to "B/Bl" wire terminal about
4 – 6 V?
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?
[A] Fig. 1 for Step 2 / [B] Fig. 2 for Step 5 / [C] Fig. 3 for Step 6
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 0A.
"G/B" wire shorted to
ground.
If wire is OK, substitute a
known-good ECM and
recheck.
Go to Step 5.
"G/B" wire open or
shorted to power, or poor
E19-14 connection.
If wire and connection are
OK, substitute a known-
good ECM and recheck.
"B/Bl" wire open or poor
E19-10 connection.
If wire and connection are
OK, substitute a known-
good ECM and recheck.