Service Information

Cruze

DTC P0335 or P0336

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 Descriptors

DTC P0335 00: Crankshaft Position Sensor Circuit Malfunction

DTC P0336 00: Crankshaft Position Sensor Performance

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
5V Reference	P0336 00	P0336 00	P0336 00	-
Signal	P0336 00	P0336 00	P0336 00	P0335 00
Low Reference	-	P0336 00	-	-

Typical Scan Tool Data

Engine Speed

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Engine starts Parameter Normal Range: 60 RPM
5V Reference	0 RPM	0 RPM	0 RPM
Signal	0 RPM	0 RPM	0 RPM
Low Reference	-	0 RPM	-

The crankshaft position sensor signal indicates the crankshaft speed and position. The crankshaft position sensor produces an alternating current voltage of different amplitude and frequency. The frequency depends on the velocity of the crankshaft, and the alternating current 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.

•	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

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

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 Sensor.
Test for less than 5 Ω of resistance between the low reference circuit terminal 2 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistant. If the circuit tests normal, replace the K20 Engine Control Module.

Ignition ON, test for greater than 4.8 V between the 5 V reference circuit terminal 3 and ground.

⇒	If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 1 and ground.

⇒	If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

⇒	If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.

If all circuits test normal, test or replace the B26 Crankshaft Position Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•	Crankshaft Position Sensor Replacement

•	Engine Control Module Replacement