Suzuki 2006 SX4 Service Manual page 113

DTC Troubleshooting
Step
1 Was "Engine and Emission Control System Check"
performed?
2 DTC check
Is there DTC(s) other than P0116?
3 Engine coolant temperature check
1) With ignition switch OFF, connect scan tool to DLC.
2) With ignition switch ON, check engine coolant
temperature displayed on scan tool. (ECT 1)
3) Warm up engine to normal operating temperature.
4) Check engine coolant temperature displayed on scan
tool. (ECT 2)
Is difference between ECT 1 and ECT 2 less than 2
4 Thermostat check
1) Check thermostat referring to "Thermostat Inspection in
Section 1F".
Is thermostat in good condition?
5 ECT sensor circuit check
1) With ignition switch OFF, connect scan tool to DLC and
disconnect ECT sensor connector (1).
2) With ignition switch ON, check engine coolant
temperature displayed on scan tool.
ECT sensor temperature specifications
Signal wire terminal (2) and ground wire terminal (3)
in ECT sensor connector are shorted by service wire
(4): 130 °C (266 °F)
Signal wire terminal (2) and ground wire terminal (3)
in ECT sensor connector are opened: –40 °C (–40 °F)
Is check result as specified?
6 ECT sensor performance check
1) Check ECT sensor referring to "Engine Coolant
Temperature (ECT) Sensor Inspection in Section 1C".
Is check result as specified?
Action
I6JB01110032-01
Engine General Information and Diagnosis:
Yes
Go to Step 2.
Go to applicable DTC
diag.flow.
Go to Step 5.
°
C?
Go to Step 5.
Go to Step 6.
Substitute a known-
good ECM and recheck.
1A-69
No
Go to "Engine and
Emission Control
System Check".
Go to Step 3.
Go to Step 4.
Replace thermostat.
Check ECT sensor
signal and ground
circuits referring to Step
2 of "DTC P0117 /
P0118: Engine Coolant
Temperature Circuit
Low / High".
Replace ECT sensor.