Suzuki Baleno Manual page 1816

6E3-24 ELECTRONIC FUEL INJECTION SYSTEM (J18 ENGINE WITHOUT WU TWC)
CODE NO. 15 ECT SENSOR (ENGINE COOL-
ANT TEMPERATURE SENSOR)
CIRCUIT
1) Disconnect ECT sensor coupler with ignition switch OFF.
2) With ignition switch ON, Check voltage at
"Lg/R" wire terminal of ECT sensor coupler.
Is it about 4.75 – 5.25 V?
Check ECT sensor referring to "ECT SENSOR" in this sec-
tion.
Is it in good condition?
Intermittent trouble or faulty ECM.
Recheck referring to "INTERMITTENT AND POOR CON-
NECTION" in Section 0A.
NOTE:
Upon completion of inspection and repair work, perform final check, referring to "FINAL CHECK" in this section to
confirm that the trouble has been corrected.
YES
YES
(HIGH TEMPERATURE INDICATED,
SIGNAL CIRCUIT VOLTAGE LOW)
1. ECM
2. ECT sensor
3. Coupler
4. ECM coupler
5. To other sensors
"Lg/R" wire shorted to "Or" wire or ground circuit.
If wire is OK, substitute a known-good ECM and recheck.
Faulty ECT
sensor.
1. ECT sensor coupler disconnected
2. Engine ground
NO
NO