DESCRIPTION
Refer to DTC P0115 (See page ).
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
P0116 |
When either of the following conditions is met (2 trip detection logic).
|
|
MONITOR DESCRIPTION
Engine Coolant Temperature Sensor Cold Start MonitorThe monitor runs when the engine is started cold. If the change in engine coolant temperature sensor output until the engine is warmed up completely is less than the threshold, it is determined that a malfunction has occurred in the engine coolant temperature sensor. When this is detected in 2 consecutive driving cycles, the MIL is illuminated and the DTC is stored.
Engine Coolant Temperature Sensor Soak MonitorThe ECM compares the engine coolant temperature when the fully warmed up engine is stopped and when the engine is started on the next trip when more than 5 hours has elapsed since the engine was stopped. If the change in engine coolant temperature sensor output is less than the threshold, it is determined that a malfunction has occurred in the engine coolant temperature sensor. When this is detected in 2 consecutive driving cycles, the MIL is illuminated and the DTC is stored.
MONITOR STRATEGY
Related DTCs |
P0116: Engine Coolant Temperature Sensor Cold Start Monitor P0116: Engine Coolant Temperature Sensor Soak Monitor |
Required Sensors/Components (Main) |
Engine coolant temperature sensor |
Required Sensors/Components (Related) |
None |
Frequency of Operation |
Once per driving cycle |
Duration |
-: Cold start monitor 10 seconds: Soak monitor |
MIL Operation |
2 driving cycles |
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
All
Monitor runs whenever the following DTCs are not stored |
None |
All of the following conditions are met |
- |
Battery voltage |
10.5 V or higher |
Time after engine start |
1 second or more |
Engine coolant temperature at engine start |
Below 60°C (140°F) |
Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125) |
Not detected |
Intake air temperature sensor circuit fail (P0112, P0113) |
Not detected |
Thermostat fail (P0128) |
Not detected |
Soak time |
0 seconds or more |
Accumulated mass air flow |
4774 g or more |
Fuel cut |
OFF |
Difference between engine coolant temperature at engine start and intake air temperature |
Below 40°C (72°F) |
All of the following conditions are met |
- |
Battery voltage |
10.5 V or higher |
Engine |
Running |
Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125) |
Not detected |
Intake air temperature sensor circuit fail (P0112, P0113) |
Not detected |
Thermostat fail (P0128) |
Not detected |
Soak time fail (P2610) |
Not detected |
Soak time |
5 hours or more |
Either of the following conditions is met |
(a) or (b) |
(a) Engine coolant temperature |
60°C (140°F) or higher |
(b) Accumulated mass air flow |
9549 g or more |
TYPICAL MALFUNCTION THRESHOLDS
Engine Coolant Temperature Sensor Cold Start Monitor
Engine coolant temperature sensor value change |
Below 5°C (9°F) |
Difference between current engine coolant temperature sensor value and previous engine coolant temperature sensor value when engine stopped |
Below 5°C (9°F) (Varies with engine coolant temperature of last trip engine stop) |
COMPONENT OPERATING RANGE
Engine coolant temperature |
Engine coolant temperature sensor value changes in accordance with actual engine coolant temperature |
CONFIRMATION DRIVING PATTERN
HINT:
If the engine coolant temperature does not change by 5°C (9°F) or higher, the engine coolant temperature sensor is malfunctioning. It is not necessary to continue this procedure.
HINT:
Techstream Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
HINT:
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
In the event of the drive pattern being interrupted (possibly due to factors such as traffic conditions), the drive pattern can be resumed.
HINT:
If the judgment result shows INCOMPLETE or N/A, perform steps [D] and [E] again.
HINT:
CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. |
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0116) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read the DTCs.
Result |
Proceed to |
---|---|
DTC P0116 is output |
A |
DTC P0116 and other DTCs are output |
B |
HINT:
If any DTCs and other than P0116 are output, troubleshoot those DTCs first.
B |
GO TO DTC CHART |
|
2. |
INSPECT THERMOSTAT |
(a) Inspect the thermostat (See page ).
HINT:
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (See page ).
OK |
REPLACE ENGINE COOLANT TEMPERATURE SENSOR |
NG |
REPLACE THERMOSTAT |
Removal
REMOVAL
PROCEDURE
1. REMOVE POWER DISTRIBUTION
(a) Remove the bolt.
(b) Disengage the 2 claws and disconnect the power distribution from the relay
box as shown in the illustration.
(c) ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK COMBINATION METER ASSEMBLY
(a) Measure the resistance and voltage according to the value(s) in the table
below.
Tester Connection
Wiring Color
Terminal Description
Condition
...
Steering Pad Switch Circuit
DESCRIPTION
This circuit sends an operation signal from the steering pad switch assembly
to the radio and display receiver assembly.
If there is an open in the circuit, the audio system cannot be operated using
the steering pad switch assembly.
If there ...