Volt

DTC P0335 or P0336

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 synchronise 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.

P0335 or P0336

The vehicle is ON.

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.

DTCs P0335 and P0336 are Type B DTCs.

DTCs P0335 and P0336 are Type B DTCs.

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

Schematic Reference

Connector End View Reference

Component Connector End Views

Description and Operation

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

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 .

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.

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 earth.

⇒	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.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.