Spark

DTC P0335-P0337 - FX3

The crankshaft position (CKP) sensor signal indicates the crankshaft speed and position. The CKP 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 CKP sensor works in conjunction with a 58X 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 CKP and the camshaft position (CMP) sensor inputs. The CKP sensor is also used to detect misfire and tachometer display. The CKP sensor circuits are connected directly to the ECM. The circuits between the CKP sensor and the ECM consist of the following circuits:

P0335 (Test 1)

P0335 (Test 2)

P0336

P0335 (Test 1)

The ECM detects that the number of camshaft pulses accumulated with no crank signal present is greater than 12.

P0335 (Test 2)

The ECM detects that the time with no crank signal present is greater than 0.0625 s.

P0336

The ECM detects greater than 2 extra or missing pulses between consecutive crank sensor reference pulses.

DTC P0335 and P0336 are Type E DTCs.

DTC P0335 and P0336 are Type E DTCs.

The following conditions could also set the DTCs:

Schematic Reference

Engine Controls Schematics : Siemens ECM - LPG with LCP → Siemens ECM - Gas without FX3 or LCP → Delphi ECM - FX3

Connector End View Reference

Component Connector End Views

Description and Operation

Knock Sensor System Description

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. Attempt to start the engine, verify that the DTCs P0335 or P0336 is not set.
2. Move related harnesses/connectors of the B30 crankshaft position sensor and verify the engine does not stumble, stall, or change engine speed.
3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Note: If the CKP sensor lead is damaged in any way, replace the CKP sensor.

1. Ignition OFF, disconnect the harness connector at the B30 crankshaft position sensor.
2. Ignition ON, test for 2.0-3.0V between the circuit terminal below and ground.

•	Signal circuit terminal 3 of the B30 CKP sensor harness connector

•	Low reference circuit terminal 2 of the B30 CKP sensor harness connector

⇒	If less than the specified range, test the circuits 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 circuits for a short to voltage. If the circuit tests normal, replace the K20 ECM.

3. If all circuits test normal, test or replace the B30 CKP sensor.

1. Ignition OFF, disconnect the harness connector at the CKP sensor.

Note: If the CKP sensor lead is damaged in any way, replace the CKP sensor.

2. Test for 460-620 Ω between the signal terminal 3 and the low reference terminal 2.

⇒	If not within the specified range, replace the B30 CKP sensor.

3. Disconnect the fuel pump relay.
4. Set the DMM to the AC voltage scale.
5. Engine cranking, test for greater than 1.4 ACV between the signal terminal 3 and low reference terminal 2.

⇒	If less than the specified range, replace the CKP sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.