DTC P0217 (LPL or LPV)
Diagnostic Instructions
DTC Descriptor
| DTC P0217 00: Engine Overtemperature |
Circuit/System Description
The engine control module (ECM) controls engine coolant
temperature. The thermostat controls coolant flow and regulates the
engine operating temperature.
Conditions for Running the DTC
| • |
The engine speed is greater
than 1 000 RPM. |
Conditions for Setting the DTC
The ECM detects the engine coolant heated thermostat is stuck
open for 160 s.
Action Taken When the DTC Sets
DTC P0217 00 is a Type B DTC.
Conditions for Clearing the DTC
DTC P0217 00 is a Type B DTC.
Diagnostic Aids
| • |
Test the engine coolant
temperature (ECT) sensor at various temperature levels in order to
evaluate the possibility of a skewed sensor. A skewed sensor can
result in a DTC or a driveability condition. Refer to
Temperature Versus Resistance . |
| • |
The scan tool Desired ECT
Sensor and the ECT Sensor parameters should be within 5°C
(9°F) when the engine is at operating temperature. |
| • |
A resistance condition in the
ECT sensor circuits may cause this DTC. This condition results in a
greater voltage on the ECT sensor signal circuit, which is
interpreted by the ECM as a colder ECT. |
| • |
The engine coolant thermostat
heater has a mechanical fail-safe in case of an electrical
condition with the thermostat heater. The mechanical thermostat
will open at approximately 104°C (220°F). The mechanical
thermostat will cycle from approximately 104°C (220°F) to
approximately 98°C (208°F). |
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Engine Component Description
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
| 1. |
Engine running for 60 s.
Observe the DTC information with a scan tool. DTC P0217 should not
set. |
| 2. |
Operate the vehicle within the
Conditions for Running the DTC to verify the DTC does not reset.
You may also operate the vehicle within the conditions that you
observed from the Freeze Frame/Failure Records data. |
Circuit/System Testing
| 1. |
Ignition OFF, disconnect the
harness connector at the B34 Engine Coolant Temperature
Sensor. |
| 2. |
Ignition OFF, test for less
than 5 Ω between the low reference circuit terminal 2 and
earth. |
| ⇒ |
If greater than the specified range, test the low
reference circuit for an open/high resistance. If the circuit tests
normal, replace the K20 Engine Control Module. |
| 3. |
Ignition ON, verify the scan
tool ECT Sensor is at -40°C (-40°F). |
| ⇒ |
If greater than the specified range, test the
signal circuit terminal 1 for a short to ground. If the circuit
tests normal, replace the K20 Engine Control Module. |
|
Note: If the fuse in
the jumper wire opens, the signal circuit is shorted to a voltage
and the sensor may be damaged.
|
| 4. |
Ignition ON, connect a 3 A
fused jumper wire between the signal circuit terminal 1 and ground.
Verify the scan tool ECT Sensor parameter is greater than 136°C
(277°F). |
| ⇒ |
If less than the specified range, test the signal
circuit for a short to voltage or an open/high resistance. If the
circuit tests normal, replace the K20 Engine Control Module. |
| 5. |
If all circuits test normal,
test or replace the B34 Engine Coolant Temperature Sensor.
|
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
Engine Coolant Temperature Sensor Replacement
|
