2009 SUBARU TRIBECA coolant temperature sensor

EN(H6DO)(diag)-393
General Diagnostic Table
ENGINE (DIAGNOSTICS)
*1: Check ignition coil & ignitor assembly and spark plug.
*2: Indicate the symptom occurring only in cold temperatures.
*3: Make sure the secure installation.
*4: Check the fuel injector and fuel pressure regulator.
*5: Inspect air leak in air intake system.
6. Surging
1) Mass air flow and intake air temperature sensor
2) Manifold absolute pressure sensor
3) Engine coolant temperature sensor (*2)
4) Crankshaft position sensor (*3)
5) Camshaft position sensor (*3)
6) Fuel injection parts (*4)
7) Electronic throttle control
8) Fuel pump and fuel pump relay
7. Spark knock
1) Mass air flow and intake air temperature sensor
2) Manifold absolute pressure sensor
3) Engine coolant temperature sensor
4) Knock sensor
5) Fuel injection parts (*4)
6) Fuel pump and fuel pump relay
8. After burning in exhaust system
1) Mass air flow and intake air temperature sensor
2) Manifold absolute pressure sensor
3) Engine coolant temperature sensor (*2)
4) Fuel injection parts (*4)
5) Fuel pump and fuel pump relay
Symptom Problem parts

FU(H6DO)-17
Engine Coolant Temperature Sensor
FUEL INJECTION (FUEL SYSTEMS)
4. Engine Coolant Temperature
Sensor
A: REMOVAL
1) Remove the collector cover.
2) Disconnect the ground cable from battery.
3) Disconnect the connectors from the engine cool-
ant temperature sensor.
4) Remove the engine coolant temperature sensor.
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
18 N·m (1.8 kgf-m, 13.3 ft-lb)
FU-00572
FU-00572

GD(H6DO)-3
List of Diagnostic Trouble Code (DTC)
GENERAL DESCRIPTION
P0083 Intake Valve Control Circuit High
(Bank 2)
HIGH (BANK 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0101 Mass or Volume Air Flow Circuit
Range/Performance
CUIT RANGE/PERFORMANCE, Diagnostic Trouble Code (DTC) Detecting
Criteria.>
P0102 Mass or Volume Air Flow Circuit
Low Input
CUIT LOW INPUT, Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0103 Mass or Volume Air Flow Circuit
High Input
CUIT HIGH INPUT, Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0107 Manifold Absolute Pressure/Baro-
metric Pressure Circuit Low Input
BAROMETRIC PRESSURE CIRCUIT LOW INPUT, Diagnostic Trouble Code
(DTC) Detecting Criteria.>
P0108 Manifold Absolute Pressure/Baro-
metric Pressure Circuit High Input
BAROMETRIC PRESSURE CIRCUIT HIGH INPUT, Diagnostic Trouble
Code (DTC) Detecting Criteria.>
P0111 Intake Air Temperature Circuit
Range/Performance
RANGE/PERFORMANCE, Diagnostic Trouble Code (DTC) Detecting Crite-
ria.>
P0112 Intake Air Temperature Circuit Low
Input
LOW INPUT, Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0113 Intake Air Temperature Circuit High
Input
HIGH INPUT, Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0117 Engine Coolant Temperature Cir-
cuit Low Input
CIRCUIT LOW INPUT, Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0118 Engine Coolant Temperature Cir-
cuit High Input
CIRCUIT HIGH INPUT, Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0122 Throttle/Pedal Position Sensor/
Switch “A” Circuit Low Input
SOR/SWITCH “A” CIRCUIT LOW INPUT, Diagnostic Trouble Code (DTC)
Detecting Criteria.>
P0123 Throttle/Pedal Position Sensor/
Switch “A” Circuit High Input
SOR/SWITCH “A” CIRCUIT HIGH INPUT, Diagnostic Trouble Code (DTC)
Detecting Criteria.>
P0125 Insufficient Coolant Temperature
For Closed Loop Fuel Control
TURE FOR CLOSED LOOP FUEL CONTROL, Diagnostic Trouble Code
(DTC) Detecting Criteria.>
P0126 Insufficient Coolant Temperature
for Stable Operation
TURE FOR STABLE OPERATION, Diagnostic Trouble Code (DTC) Detect-
ing Criteria.>
P0128 Coolant Thermostat (Coolant Tem-
perature Below Thermostat Regu-
lating Temperature)
TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE),
Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0131 O2 Sensor Circuit Low Voltage
(Bank 1 Sensor 1)
(BANK 1 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0132 O2 Sensor Circuit High Voltage
(Bank 1 Sensor 1)
(BANK 1 SENSOR 1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0133 O2 Sensor Circuit Slow Response
(Bank 1 Sensor 1)
RESPONSE (BANK 1 SENSOR 1), Diagnostic Trouble Code (DTC) Detect-
ing Criteria.>
P0134 O2 Sensor Circuit No Activity
Detected (Bank 1 Sensor 1)
DETECTED (BANK 1 SENSOR 1), Diagnostic Trouble Code (DTC) Detect-
ing Criteria.>
P0137 O2 Sensor Circuit Low Voltage
(Bank 1 Sensor 2)
(BANK 1 SENSOR 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
P0138 O2 Sensor Circuit High Voltage
(Bank 1 Sensor 2)
(BANK 1 SENSOR 2), Diagnostic Trouble Code (DTC) Detecting Criteria.>
DTC Item Index

GD(H6DO)-26
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Q: DTC P0068 MAP/MAF - THROTTLE POSITION CORRELATION
1. OUTLINE OF DIAGNOSIS
Detect problems in the intake manifold pressure sensor output properties. Determining from the engine con-
dition, if the intake manifold pressure AD value is small even when operating conditions suggest it should be
large, or if the intake manifold pressure AD value is large even though the operating condition suggest it
should be small, this is judged as being NG.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after idling.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge NG when either Low side or High side becomes NG.
Judge as NG when the continuous time until completing the malfunction criteria below becomes more than
the predetermined time.
(A) Output voltage (B) Absolute pressure

(1) Connector (2) Terminals (3) O-ring
Secondary Parameters Enable Conditions
Engine coolant temperature≥ 75°C (167°F)
EN-01765
(B)
(A)
(2)
(3)
(1)

GD(H6DO)-31
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
V: DTC P0101 MASS OR VOLUME AIR FLOW CIRCUIT RANGE/PERFOR-
MANCE
1. OUTLINE OF DIAGNOSIS
Detect for abnormalities in the air flow sensor output properties.
Judge as a low side NG when the air flow voltage indicates a small value regardless of running in a state
where the air flow voltage increases. Judge as a high side NG when the air flow voltage indicates a large val-
ue regardless of running in a state where the air flow voltage decreases. Judge air flow sensor property NG
when the Low side or High side becomes NG.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after idling.
(A) Air

(1) Air flow sensor (3) Voltage (V) (4) Amount of intake air (kg/s)
(2) Intake air temperature sensor
Secondary Parameters Enable Conditions
Engine coolant temperature≥ 75°C (167°F)
EN-01766
(3)
(4)
(2)
(1)
(A)

GD(H6DO)-42
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AA:DTC P0111 INTAKE AIR TEMPERATURE CIRCUIT RANGE/PERFORMANCE
1. OUTLINE OF DIAGNOSIS
Detect the malfunction of intake air temperature sensor output property.
Judge as NG when the intake air temperature is not varied whereas it seemed to be varied from the viewpoint
of engine condition.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Start the engine from a cooled condition, and after idling, fulfill the vehicle speed condition, and then perform
diagnosis.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time until completing the malfunction criteria below becomes 1 second or
more.
(A) Air

(1) Air flow sensor (3) Resistance value (Ω)(4)Intake air temperature °C (°F)
(2) Intake air temperature sensor
Secondary Parameters Enable Conditions
Coolant temp. before engine start < 30°C (86°F)
Engine coolant temperature > 95°C (203°F)
Battery voltage≥ 10.9 V
Continuous time when the vehicle speed
is less than 60 km/h (37 MPH)
600 seconds or more
Judgment Value
Malfunction Criteria Threshold Value
Output voltage difference between Max.
and Min.
< 20 mV (Equivalent to
approximately 0.5°C
(0.9°F) near 25°C)
EN-01767
(3)
(4)
(2)
(1)
(A)

GD(H6DO)-48
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AD:DTC P0117 ENGINE COOLANT TEMPERATURE CIRCUIT LOW INPUT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the engine coolant temperature sensor.
Judge as NG if it is out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Judge as NG when the continuous time until completing the malfunction criteria below becomes 0.5 second
or more. Judge as OK and clear the NG when the malfunction criteria below are not met.
Time Needed for Diagnosis: 0.5 second
Malfunction Indicator Light: Illuminates as soon as a malfunction occurs.
6. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
(A) Resistance value (Ω) (B) Temperature °C (°F)

(1) Connector (2) Thermistor element
Secondary Parameters Enable Conditions
None
Judgment Value
Malfunction Criteria Threshold Value
Output voltage≤ 0.166 V
EN-02917
(A)
(2)
(1)
(B)

GD(H6DO)-49
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
•When the OK driving cycle is completed 3 times in a row
•When “Clear Memory” is performed
8. FAIL SAFE
•Engine coolant temperature sensor process: Engine coolant temperature is fixed at 70°C (158°F).
•ISC Feedback: Calculate target engine RPM as engine coolant temperature 70°C (158°F).
•ISC learning: Not allowed to learn.
•Air conditioner control: Not allowed to turn the air conditioner to ON.
•Radiator fan control: Send the duty signal 50% to the controller.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)