Description
The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
<Reference data>
*: These data are reference values and are measured between ECM terminals 46 (Engine coolant temperature sensor) and 52 (Sensor ground).
DTC Logic
DTC DETECTION LOGIC
NOTE:
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
2.CHECK ENGINE COOLANT TEMPERATURE SENSOR FUNCTION
With CONSULT
With GST
Follow the procedure "With CONSULT" above.
3.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
If "COOLAN TEMP/S" increases to more than 10C (50F) within 65 minutes, stop engine because the test result will be OK. CAUTION: Never overheat engine.
With GST
Follow the procedure "With CONSULT" above.
Diagnosis Procedure
1.CHECK GROUND CONNECTION
2.CHECK ENGINE COOLANT TEMPERATURE SENSOR
3.CHECK THERMOSTAT OPERATION
When the engine is cold [lower than 70C (158F)] condition, grasp lower radiator hose and confirm that the engine coolant does not flow.
4.CHECK INTERMITTENT INCIDENT
Component Inspection
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Intake Manifold Collector
Removal and Installation
Intake manifold collector
Intake manifold collector gasket
Electric throttle control actuator gasket
Electric throttle control actuator
Refer to INSTALLATION
Refer to INSTALLATION
WARNING: To avoid the danger of being
scalded, do not drain the coolan ...
System description
CAN COMMUNICATION SYSTEM
CAN System Specification Chart
Determine CAN system type from the following specification chart.
NOTE:
Refer to LAN-15, "Trouble Diagnosis Procedure" for how to use CAN
system specification chart.
VEHICLE EQUIPMENT IDENTIFICATION INFORMATION
NOTE:
Check CAN system ...
Entry/exit function
This system is designed so that the driver's seat
and automatic operation steering column will automatically
move when the shift lever is in the P
(Park) position. This allows the driver to get into
and out of the driver's seat more easily.
The driver's seat will slide backward and the
steer ...