DTC P2617
Diagnostic Instructions
DTC Descriptor
| DTC P2617 00: Crankshaft Position Signal
Output Circuit |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Crankshaft Position Sensor Signal
|
P2617 00
|
P2617 00
|
P2617 00
|
P0336 00
|
Low Reference
|
P2617 00
|
P2617 00
|
P2617 00
|
P0336 00
|
|
| |
Circuit/System Description
The crankshaft position sensor signal indicates the crankshaft
speed and position. The crankshaft position sensor produces an
alternating current (AC) voltage of different amplitude and
frequency. The frequency depends on the velocity of the crankshaft,
and the AC voltage output depends on the crankshaft position and
battery voltage. The engine control module (ECM) can synchronize
ignition timing and fuel injector timing based on the crankshaft
position sensor and the camshaft position sensor inputs. The
crankshaft position sensor is also used to detect misfire. The
crankshaft position sensor circuits are connected directly to the
ECM.
Conditions for Running the DTC
| • |
The engine is cranking or
running. |
| • |
The DTC runs continuously once
the above condition is met. |
Conditions for Setting the DTC
The ECM detects 4 crankshaft position sensor resynchronizations
within 5 s.
Action Taken When the DTC Sets
P2617 is a Type A DTC.
Conditions for Clearing the DTC
P2617 is a Type A DTC.
Diagnostic Aids
The following conditions may also set the DTC:
| • |
Physical damage to the
Crankshaft Position Sensor or the reluctor wheel |
| • |
Excessive play or looseness of
the Crankshaft Position Sensor or the reluctor wheel |
| • |
Improper installation of the
Crankshaft Position Sensor or the reluctor wheel |
| • |
Excessive air gap between
Crankshaft Position Sensor and the reluctor wheel |
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Engine starting or running, observe the scan tool Engine Speed
parameter. The reading should be between 50–850 RPM.
Circuit/System Testing
| 1. |
Ignition OFF, disconnect the
harness connector at the B26 Crankshaft Position Sensor.
|
| 2. |
Ignition ON, test for
2.0–3.0 V between the low signal circuit terminal 2 and
ground. |
| ⇒ |
If greater than the specified range, test the low
signal circuit for a short to voltage. If the circuit tests normal,
replace the K20 Engine Control Module. |
| ⇒ |
If less than the specified range, test the low
signal circuit for a short to ground or an open/high resistant. If
the circuit tests normal, replace the K20 Engine Control
Module. |
| 3. |
Ignition ON, test for
2.0–3.0 V between the high signal circuit terminal 1 and
ground. |
| ⇒ |
If greater than the specified range, test the high
signal circuit for a short to voltage. If the circuit tests normal,
replace the K20 Engine Control Module. |
| ⇒ |
If less than the specified range, test the high
signal circuit for a short to ground or an open/high resistance. If
the circuit tests normal, replace the K20 Engine Control
Module. |
| 4. |
If all circuits test normal,
test or replace the B26 Crankshaft Position Sensor. |
Component Testing
Static Test
| 1. |
Ignition OFF, disconnect the
harness connector at the B26 Crankshaft Position Sensor.
|
| 2. |
Test for 700–800 Ω
between the high signal terminal 1 and the low signal circuit
terminal 2. |
| ⇒ |
If not within the specified range, replace the B26
Crankshaft Position Sensor. |
| 3. |
Test for infinite resistance
between each terminal and the sensor housing/case. |
| ⇒ |
If less than the specified value, replace the B26
Crankshaft Position Sensor. |
| 4. |
Engine cranking, test for
greater than 0.5 V alternating current between the high signal
circuit terminal 1 and the low signal terminal 2. |
| ⇒ |
If less than the specified range, replace the B26
Crankshaft Position Sensor. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
