2010 Cadillac CTS Sedan AWD V6-3.0L Page 1786

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1786

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Component Testing

1. Ignition OFF, remove the secondary fuel level sender and verify there are no obstructions interfering with the fuel level sender.

瀚慖f any interference is present, repair the fuel sender interference.

2. Ignition OFF, disconnect the harness connector at the secondary fuel level sensor.

3. While sweeping the secondary fuel level sensor through its full range of motion, test for a minimum value less than 41 ohms and a maximum

value greater than 119 ohms between signal terminal A and the low reference terminal D.

瀚慖f not within the specified range, replace the fuel level sensor.

Repair Instructions

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

* Fuel Level Sensor Replacement - Left Side (See: Powertrain Management/Computers and Control Systems/Fuel Level Sensor/Service and

Repair/Fuel Level Sensor Replacement - Left Side) for the 3.6L engine

* Fuel Level Sensor Replacement - Left Side (See: Powertrain Management/Computers and Control Systems/Fuel Level Sensor/Service and

Repair/Fuel Level Sensor Replacement - Left Side) for the 4.8L, 5.3L, 6.0L, 6.2L or 7.0L engine

* Control Module References (See: Testing and Inspection/Programming and Relearning) for the ECM replacement, setup, and programming

P2067

DTC P2067

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 P2067

- Fuel Level Sensor 2 Low Voltage

Diagnostic Fault Information

Circuit/System Description

The primary fuel level sender and the secondary fuel level sender changes resistance based on fuel level. The engine control module (ECM)

monitors the signal circuits of the primary fuel level sender and the secondary fuel level sender in order to determine the fuel level. When the fuel

tank is full, the resistances of both fuel level senders are low and the ECM senses a low signal voltage on both the signal circuits of the primary fuel

level sender and the secondary fuel level sender. When the fuel tanks are empty, the resistances of the fuel level senders are high and the ECM

senses a high signal voltage. The ECM uses the signal circuits of the primary fuel level sender and the secondary fuel level sender in order to

calculate the percentage of remaining fuel in the tank. The ECM sends the fuel level percentage via serial data circuit to the instrument cluster in

order to control the fuel gauge.

Conditions for Running the DTC

* The engine is running.

* The system voltage is between 10-18 V.