2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2027

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2027

3. Tap on the engine block with a non-metallic object near the affected KS and observe the DMM for a fluctuating frequency.

瀚慖f the DMM does not display a fluctuating frequency while tapping on the engine block then replace the affected KS.

4. Verify the affected KS is properly tightened, refer to Fastener Tightening Specifications (See: Engine, Cooling and

Exhaust/Engine/Specifications/Fastener Tightening Specifications).

5. Ignition OFF, with appropriate length jumper wires, connect the KS1 harness to the KS2 sensor and the KS2 harness to the KS1 sensor.

6. Monitor the DTCs using a scan tool. Operate the vehicle within the conditions for running the DTC. Verify the fault does not follow the

sensor in question.

瀚慖f the fault follows the sensor in question, replace the appropriate KS.

7. Ignition OFF, remove the jumper wires from the previous step.

8. Measure for 2-3 volts between each of the following circuits and ground on the ECM side of the harness connector:

* The KS signal circuit, terminal A

* The KS signal circuit, terminal B

瀚慖f less than the specified range, test the circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the

ECM.

瀚慖f greater than the specified range, test the circuits for a short to voltage. If the circuits test normal, replace the ECM.

9. Test for intermittent or poor connections at the ECM, KS, and in-line connectors where present.

10. If all circuits test normal, replace the ECM.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Knock Sensor 1 Replacement (See: Powertrain Management/Computers and Control Systems/Knock Sensor/Service and Repair/Knock

Sensor 1 Replacement)

* Knock Sensor 2 Replacement (See: Powertrain Management/Computers and Control Systems/Knock Sensor/Service and Repair/Knock

Sensor 2 Replacement)

* Engine Control Module Replacement (See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and

Repair)

* Engine Control Module Programming and Setup (See: Powertrain Management/Computers and Control Systems/Engine Control

Module/Testing and Inspection)

P0335

DTC P0335

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P0335

- Crankshaft Position Sensor Circuit

Diagnostic Fault Information

Circuit/System Description

The crankshaft position sensor circuits consist of an engine control module (ECM) supplied 5 V circuit, low reference circuit and an output signal

circuit. The crankshaft position sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic