Hybrid/EV Controls

DTC P0335 or P0336

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructionsprovides an overview of each diagnostic category.

DTC Descriptor
DTC P0335
- Crankshaft Position Sensor Circuit

DTC P0336
- Crankshaft Position Sensor Performance

Circuit/System Description

The crankshaft position sensor detects 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 crankshaft position sensor works in conjunction with a 58 tooth reluctor wheel attached to the crankshaft. The engine control module (ECM) can synchronize the ignition timing, fuel injector timing, and spark knock control based on the crankshaft position sensor and the camshaft position sensor inputs. The crankshaft position sensor is also used to detect misfire. The ECM also sends a replicated signal over a dedicated line to the hybrid powertrain control module.

The hybrid powertrain control module uses crankshaft speed and position to confirm ICE status in various modes; for example to confirm Autostart and Autostop functionality. In addition to the signal sent over the dedicated line, this information is also sent from the ECM to the hybrid powertrain control module over serial data. The serial data status will be used by the hybrid powertrain control module in the event of a failure of this circuit.

Conditions for Running the DTC

P0335 or P0336

The vehicle is ON.

Conditions for Setting the DTC

P0335

No signal from the crank sensor for more than 2 seconds.

P0336

The signal from the crank sensor is invalid for more than 1 second.

Action Taken When the DTC Sets

DTCs P0335 and P0336 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0335 and P0336 are Type B DTCs.

Diagnostic Aids

A high resistance ground at either the power inverter module or the ECM may cause these DTCs to set intermittently.

Reference Information
Schematic Reference

* Hybrid Controls Schematics Hybrid Controls Schematics
* Engine Controls Schematics [1][2]Electrical Diagrams

Connector End View Reference

Component Connector End Views Hybrid/EV Battery Pack X1
Description and Operation

* Electronic Ignition System Description Description and Operation
* Hybrid Modes of Operation Description Hybrid Modes of Operation Description

Electrical Information Reference

* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference

Control Module References Programming and Relearningfor scan tool information

Circuit/System Verification

1. Verify that ECM DTCs P0335 or P0336 are not set.

• If either of the DTCs are set, refer to Engine Controls and Fuel DTC P0335 or P0336 Powertrain Management.

2. With the engine running, observe the hybrid powertrain control module Engine Speed parameter with a scan tool. The parameter should display the current engine speed, matching the tachometer and/or the ECM Engine Speed parameter.

• If the hybrid powertrain control module Engine Speed parameter displays a value other than the current engine speed, continue with Circuit/System Testing.

Circuit/System Testing

1. Vehicle OFF, disconnect the X1 harness connector at the T6 power inverter module.
2. Vehicle in Service Mode, test for 4.8-5.2 V between the signal circuit terminal 5 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 ECM.
• If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

3. If the DTC is set, program the T6 power inverter module. If the DTC resets, replace the T6 power inverter module.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Control Module References Programming and Relearningfor engine control module replacement, programming, and setup
* Control Module References Programming and Relearningfor Drive Motor Generator Power Inverter module, also called the power inverter module, replacement, programming, and setup