Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC P0336 00: Crankshaft Position Sensor PerformanceDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
5-Volt Reference | P0336 00 | P0336 00 | P0336 00 | P0336 00 |
Signal | P0336 00 | P0336 00 | P0336 00 | P0336 00 |
Component | Condition | DTCs | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Crankshaft sensor |
| P0336 00 | ||||||||||
Reluctor wheel |
| P0336 00 |
Typical Scan Tool Data
Circuit | Short to Ground | Open | Short to Voltage |
|---|---|---|---|
Operating Conditions: engine starts Parameter Normal Range: >60 RPM | |||
5-Volt Reference | 0 RPM | 0 RPM | 0 RPM |
Signal | 0 RPM | 0 RPM | 0 RPM |
Circuit/System Description
The crankshaft position sensor signal indicates the crankshaft speed and position. The crankshaft position sensor produces an 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 the ignition timing, fuel injector timing based on the crankshaft position sensor and the camshaft position sensor inputs. The sensor crankshaft position sensor is also used to detect misfire and tachometer display. The crankshaft position sensor circuits are connected directly to the ECM.
Conditions for Running the DTC
| • | The engine is cranking or operating. |
| • | The engine control module detects no or wrong signal. |
| • | The DTC runs continuously once the above conditions are met. |
Conditions for Setting the DTC
| • | The engine is cranking or operating. |
| • | The engine control module detects no or wrong signal. |
| • | The DTC runs continuously once the above conditions are met. |
Action Taken When the DTC Sets
DTC P0336 is a Type A DTC.
Conditions for Clearing the DTC
DTC P0336 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 |
| • | Exessive play or looseness of the crankshaft position sensor or the reluctor wheel |
| • | Improper installation of the crankshaft position sensor or the reluctor wheel |
| • | Exessive air gap between crankshaft position sensor and the reluctor wheel |
Reference Information
Schematic Reference
Connector End View Reference
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
- Ignition OFF, disconnect the harness connector at the B26 Crankshaft Position (CKP) Sensor.
- Ignition ON, test for less than 0.3 V between the low signal circuit circuit terminal 2 (X1) and ground.
- Ignition ON, test for less than 0.3 V between the high signal circuit terminal 1 (X1) and ground.
- Ignition OFF, disconnect the harness connector at the K20 Engine Control Module (ECM)
- Test for more than 500 kΩ between the low signal circuit terminal 2 (X1) and ground.
- Test for more than 500 kΩ between the high signal circuit terminal 1 (X1) and ground.
- If all circuits test normal, test or replace the B26 Crankshaft Position (CKP) Sensor.
| ⇒ | 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 (ECM). |
| ⇒ | 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 (ECM). |
| ⇒ | If less than the specified range, test the low signal circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module (ECM). |
| ⇒ | If less than the specified range, test the high signal circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module (ECM). |
Component Testing
Staic Test
- Ignition OFF, disconnect the harness connector at the B26 Crankshaft Position (CKP) Sensor.
- Test for 300-700 Ω between the high signal terminal 1 and the low signal circuit terminal 2.
- Test for infinite resistance between each terminal and the sensor housing/case.
- Set the DMM to the AC voltage scale
- Engine cranking, test for greater than0.5 V between the high signal circuit terminal 1 and the low signal terminal 2.
| ⇒ | If not within the specified range, replace the B26 Crankshaft Position (CKP) Sensor. |
| ⇒ | If less than the specified value, replace the B26 Crankshaft Position (CKP) Sensor. |
| ⇒ | If less than the specified range, replace the B26 Crankshaft Position (CKP) Sensor. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Engine Control Module Replacement for ECM replacement, setup and programming |
