Chrysler Sebring, Stratus sedan, Sebring Convertible. Manual — part 223
Symptom:
P1115-GENERAL TEMP SENSOR PERFORMANCE
When Monitored and Set Condition:
P1115-GENERAL TEMP SENSOR PERFORMANCE
When Monitored:
Engine off time is greater than 480 minutes. Ambient temperature is
greater than -23°C (-10°F).
Set Condition:
After a calibrated amount of cool down time, the PCM compares the ECT
Sensor, IAT Sensor and the Ambient Air Temperature Sensor values. If the (AAT and IAT),
(AATand ECT) and (ECT and IAT) are all less than a calibrated value, then the DTC will
set.
POSSIBLE CAUSES
GOOD TRIP EQUAL TO ZERO
OTHER POSSIBLE CAUSES
SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
TEMPERATURE SENSOR VOLTAGE BELOW 1.0 VOLT
SIGNAL CIRCUIT OPEN
SENSOR GROUND CIRCUIT OPEN
SIGNAL CIRCUIT SHORTED TO GROUND
SIGNAL CIRCUIT SHORTED TO SENSOR GROUND
PCM LOW
PCM HIGH
TEST
ACTION
APPLICABILITY
1
NOTE: NOTE:Due to the fact that the PCM compares the IAT, AAT and ECT
sensors to see if they are within a calibrated temp of one another, the use of
a block heater can cause false readings for the PCM. Check with the
customer to see if they use a block h
Ignition on, engine not running.
NOTE: It is possible that more then one temperature sensor caused this
DTC to set. After a repair has been made the remaining temperature sensors
must be checked using the DRB temperature probe.
With the DRBIII
t, read DTCs and record the related Freeze Frame data.
Is the Good Trip displayed and equal to zero?
All
Yes
→ Go To 2
No
→ Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
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DRIVEABILITY - NGC
TEST
ACTION
APPLICABILITY
2
Turn the ignition on.
With the DRBIII
t, read and record the AAT Sensor Temperature value
Using the DRB Temperature Probe #CH7050, measure the ambient air temperature
near the AAT sensor.
Is the AAT Sensor value with -15°C (5°F) of the temperature probe reading?
All
Yes
→ Go To 3
No
→ Go To 6
3
Turn the ignition on.
With the DRBIII
t, read and record the IAT Sensor Temperature value
Remove the IAT sensor.
Using the DRB Temperature Probe #CH7050, measure the temperature inside the
IAT sensor opening.
Is the IAT Sensor value within -15°C (5°F) of the temperature probe reading?
All
Yes
→ Go To 4
No
→ Go To 6
4
WARNING: MAKE SURE THE ENGINE COOLING SYSTEM IS COOL BE-
FORE REMOVING THE PRESSURE CAP OR ANY HOSE. SEVERE PER-
SONAL INJURY MAY RESULT FROM ESCAPING HOT COOLANT. THE
COOLING SYSTEM IS PRESSURIZED WHEN HOT.
Turn the ignition on.
With the DRBIII
t, read and record the ECT Sensor Temperature value
Using the DRB Temperature Probe #CH7050, measure the engine coolant tempera-
ture.
Is the ECT Sensor value with -15°C (5°F) of the temperature probe reading?
All
Yes
→ Go To 5
No
→ Go To 6
5
Inspect the Temperature sensors for any physical damage.
Inspect the engine coolant. Ensure the coolant is at the proper level. Refer to the
Service Information COOLING.
Ensure the Temperature sensors are properly mounted.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Refer to any Technical Service Bulletins (TSBs) that may apply.
With the engine running at normal operating temperature, monitor the Temperature
sensor parameters while wiggling the wire harness. Look for parameter values to
change.
Visually inspect the related wire harness. Look for any chafed, pierced, pinched,
partially broken wires and broken, bent, pushed out, or corroded terminals.
CAUTION: NEVER PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Inspect and clean all PCM, engine, and chassis grounds.
Were any problems found during the above inspections?
All
Yes
→ Repair as necessary
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Test Complete.
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DRIVEABILITY - NGC
P1115-GENERAL TEMP SENSOR PERFORMANCE —
Continued
TEST
ACTION
APPLICABILITY
6
NOTE: Visually inspect both the component and the PCM connectors. Look
for damage, partially broken wires and backed out or corroded terminals
Turn the ignition off.
Disconnect the applicable Temperature Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the Signal circuit in the applicable Temperature Sensor
harness connector.
Is the voltage above 5.2 volts?
All
Yes
→ Repair the short to battery voltage in the Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 7
7
Turn the ignition off.
Disconnect the applicable Temperature Sensor harness connector.
Ignition on, engine not running.
With the DRBIII
t, read the Temperature Sensor voltage.
Is the voltage above 4.6 volts?
All
Yes
→ Go To 8
No
→ Go To 11
8
Turn the ignition off.
Disconnect the applicable Temperature Sensor harness connector.
Using a jumper wire, jumper across the Temperature Sensor harness connector.
Ignition on, engine not running.
With the DRBIII
t, read the Temperature voltage.
Is the voltage below 1.0 volt?
All
Yes
→ Replace the applicable Temperature Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 9
9
Turn the ignition off.
Disconnect the applicable Temperature Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the Signal circuit from the Temperature Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 10
No
→ Repair the open in the Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
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P1115-GENERAL TEMP SENSOR PERFORMANCE —
Continued
TEST
ACTION
APPLICABILITY
10
Turn the ignition off.
Disconnect the applicable Temperature Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the Sensor ground circuit from the Ambient Air Temper-
ature Sensor harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
All
Yes
→ NOTE: Before continuing, check the PCM harness connector
terminals for corrosion, damage, or terminal push out. Repair as
necessary. Replace and program the Powertrain Contorl Module
in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Repair the open in the Sensor ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
11
Turn the ignition off.
Disconnect the applicable Temperature Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the Signal circuit in the Temperature
harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 12
12
Turn the ignition off.
Disconnect the applicable Temperature Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the Signal circuit and the Sensor ground circuit in
the Temperature Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the Sensor ground shorted to the Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ NOTE: Before continuing, check the PCM harness connector
terminals for corrosion, damage or terminal push out. Repair as
necessary. Replace and program the Powertrain Control Module
in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
272
DRIVEABILITY - NGC
P1115-GENERAL TEMP SENSOR PERFORMANCE —
Continued
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