Spark

DTC P1325

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 reluctor wheel consists of 58 poles and a reference gap. Each pole on the reluctor wheel is spaced 6° apart with a 12° space for the reference gap. The pulse from the reference gap is known as the sync pulse. The sync pulse is used to synchronise the coil firing sequence with the crankshaft position, while the other poles provide cylinder location during a revolution.

The ECM detects 1 or 2 extra/missing teeth during 1 crankshaft revolution.

DTC P1325 is a Type C DTC.

DTC P1325 is a Type C DTC.

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

Electronic Ignition 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 DTC P1325 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. Verify that other DTCs are not set.

⇒	If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .

2. Verify one of the following conditions is not present:

•	Physical damage to the CKP sensor or the reluctor wheel

•	Excessive play or looseness of the CKP sensor or the reluctor wheel

•	Improper installation of the CKP sensor or the reluctor wheel

•	Foreign material passing between the CKP sensor and the reluctor wheel

•	Excessive air gap between the CKP sensor and the reluctor wheel

3. Ignition OFF, disconnect the harness connector at the B30 Crankshaft Position Sensor.
4. Ignition ON, test for 1.5-2.0 V 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.

5. 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.