CADILLAC

Sunday, October 24, 2021

2010 Cadillac Truck SRX FWD V6-3.0L Page 1379

DTC P0276

- Cylinder 6 Injector Control Circuit Low Voltage

DTC P0277

- Cylinder 6 Injector Control Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The engine control module (ECM) supplies voltage to each fuel injector on the injector high voltage supply circuits. The ECM energizes each fuel

injector by grounding the high voltage control circuit of the fuel injector. The ECM monitors the status of the injector high voltage supply circuits

and the fuel injector high voltage control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is

disabled.

Conditions for Running the DTC

* The engine is running.

* The ignition voltage is between 11-18 V.

* The DTCs run continuously once the above conditions are met.

Conditions for Setting the DTC

P0201, P0202, P0203, P0204, P0205, or P0206

The ECM detects the injector high voltage supply circuit or the injector high voltage control circuit is open for greater than 2 s.

P0261, P0264, P0267, P0270, P0273, or P0276

The ECM detects the injector high voltage control circuit is shorted to ground for greater than 2 s.

P0262, P0265, P0268, P0271, P0274, or P0277

The ECM detects the injector high voltage control circuit is shorted to voltage for greater than 2 s.

Action Taken When the DTC Sets

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, and P0277

Disclaimer2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Technical Service Bulletin # 09-08-50-017B Date: 100211

Electrical - No Crank/No Start/Discharged or Low Battery

TECHNICAL

Bulletin No.: 09-08-50-017B

Date: February 11, 2010

Subject: No Crank, No Start, Discharged or Low Battery (Reprogram Rear Heated Seat Module)

Models:

2006-2010 Cadillac DTS

Built Prior to February 2, 2010

2007-2010 Cadillac Escalade, Escalade ESV

2007-2010 Chevrolet Suburban, Tahoe

2007-2010 GMC Yukon, Yukon XL

Built Prior to November 30, 2009

All Equipped with Rear Heated Seat RPO KA6

Supercede:

This bulletin is being revised to add build breakpoint dates. Please discard Corporate Bulletin Number 09-08-50-017A (Section 08 - Body and

Accessories).

Condition

Some customers may comment about a no crank/no start condition or a discharged or low battery.

Note

This condition may be intermittent, therefore it is important to check if a revised calibration has been released on TIS2WEB for this concern, even

if the condition cannot be duplicated at the dealer.

Cause

This condition may be caused by the rear heated seat module (RHSM) discharging the battery by keeping the serial data bus active, which creates a

cumulative continuous draw of four amps on the battery after the vehicle is shut down, until the state of charge reaches three volts.

Correction

Important

DO NOT replace the RHSM or the battery for this concern.

Reprogram the RHSM with the latest software calibration.

Important

Select the correct calibration files for the appropriate vehicle configuration (body style) and RPO codes.

A revised calibration has been developed to address this condition. Technicians are to reprogram the RHSM using the Service Programming

System (SPS) with the latest software available on TIS2WEB. Refer to the Service Programming System (SPS) procedures in SI.

When using a Tech 2(R) or a Multiple Diagnostic Interface (MDI) for reprogramming, ensure that it is updated with the latest software version.

During programming, the battery voltage must be maintained within the proper range of 12-15 volts. Only use the approved Midtronics(R) PSC 550

Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 290

Warranty Information

For vehicles repaired under warranty, use:

2010 Cadillac Truck SRX FWD V6-3.0L Page 1575

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 Descriptors

DTC P0601

- Control Module Read Only Memory Performance

DTC P0602

- Control Module Not Programmed

DTC P0603

- Control Module Long Term Memory Reset

DTC P0604

- Control Module Random Access Memory Performance

DTC P0606

- Control Module Processor Performance

DTC P062B

- Control Module Fuel Injector Control Performance

DTC P062F

- Control Module Long Term Memory Performance

DTC P0630

- VIN Not Programmed or Mismatched - Engine Control Module (ECM)

DTC P16F3

- Control Module Redundant Memory Performance

DTC P2610

- Control Module Ignition Off Timer Performance

Circuit/System Description

This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM). This diagnostic also addresses if

the ECM is not programmed, or is programmed incorrectly.

Conditions for Running the DTC

P0601, P062B, P0630, P16F3

These DTCs run continuously when the ignition is ON.

P0602, P0603, P062F

These DTCs run at power up.

P0604

DTC P0604 runs continuously when the ignition is ON. First memory scan may take up to 30 s.

P0606

* System voltage is greater than 6 V.

* Reduced engine power is not active.

* DTC P0606 runs continuously when the above conditions are met.

P2610

* The intake air temperature is between -40 to +80掳C (-40 to +176掳F).

* DTCs P0111, P0112, P0113 are not set.

* DTC P2610 runs on ECM power down.

Conditions for Setting the DTC

The ECM detects an internal failure or incomplete or incorrect programming.

Action Taken When the DTC Sets

Saturday, October 23, 2021

2010 Cadillac Truck SRX FWD V6-3.0L Page 1568

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

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

Circuit/System Verification

Engine ON, while rotating the steering wheel to both steering stops, observe the scan tool Cruise Control Switch parameter while pressing each of

the cruise control switches. The parameter should toggle between On, Off, Resume, Set, and Cancel as the applicable switch is pressed.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the S70L steering wheel control switch-left.

2. Ignition ON, test for B+ between the B+ circuit terminal 1 and ground.

瀚慖f less than the specified value, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9

BCM.

3. Test for B+ between the B+ circuit terminal 1 and the signal circuit terminal 2.

瀚慖f less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace

the K9 BCM.

4. Ignition OFF, disconnect the X1 harness connector at the K9 BCM.

5. Test for infinite resistance between the signal circuit terminal 3 and ground.

瀚慖f less than the specified value, test the signal circuit for a short to ground.

6. If all circuits test normal, test or replace the S70L steering wheel control switch-left.

Repair Instructions

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

* Cruise Control Switch Replacement (See: Cruise Control/Cruise Control Switch/Service and Repair)

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

P0568

DTC P0564, P0567, or P0568

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 Descriptors

DTC P0564

- Cruise Control Multifunction Switch Circuit

2010 Cadillac Truck SRX FWD V6-3.0L Technical Service Bulletin # 05-06-04-022G Date: 101027

Fuel System - TOP TIER Detergent Gasoline (Canada)

INFORMATION

Bulletin No.: 05-06-04-022G

Date: October 27, 2010

Subject: TOP TIER Detergent Gasoline Information and Available Brands (Deposits, Fuel Economy, No Start, Power, Performance, Stall

Concerns) - Canada ONLY

Models:

2010 Cadillac Truck SRX FWD V6-3.0L Page 262

2011 and Prior GM Passenger Cars and Trucks (Canada Only)

Supercede:

This bulletin is being revised to update the model years and include an additional gasoline brand as a TOP TIER source. Please discard Corporate

Bulletin Number 05-06-04-022F (Section 06 - Engine/Propulsion System). In the U.S., refer to the latest version of Corporate Bulletin Number

04-06-04-047I.

A new class of fuel called TOP TIER Detergent Gasoline is appearing at retail stations of some fuel marketers. This gasoline meets detergency

standards developed by six automotive companies. All vehicles will benefit from using TOP TIER Detergent Gasoline over gasoline containing the

"Lowest Additive Concentration" recommended by the Canadian General Standards Board (CGSB). Those vehicles that have experienced deposit

related concerns may especially benefit from use of TOP TIER Detergent Gasoline.

Intake valve: 16,093 km (10,000 mi) with TOP TIER Detergent Gasoline

Intake valve: 16,093 km (10,000 mi) with Minimum Additive recommended by the CGSB

Top Tier Fuel Availability

Chevron was the first to offer TOP TIER Detergent Gasoline in Canada. Shell became the first national gasoline retailer to offer TOP TIER

Detergent Gasoline across Canada. Petro-Canada began offering TOP TIER Detergent Gasoline nationally as of October 1, 2006. Sunoco began

offering TOP TIER Detergent Gasoline in March of 2007. Esso began offering TOP TIER Detergent Gasoline in May of 2010.

Gasoline Brands That Currently Meet TOP TIER Detergent Gasoline Standards

The following gasoline brands meet the TOP TIER Detergent Gasoline Standards in all octane grades :

- Chevron Canada (markets in British Columbia and western Alberta)

- Shell Canada (nationally)

- Petro-Canada (nationally)

- Sunoco-Canada (Ontario)

- Esso-Canada (nationally)

2010 Cadillac Truck SRX FWD V6-3.0L Page 263

What is TOP TIER Detergent Gasoline?

TOP TIER Detergent Gasoline is a new class of gasoline with enhanced detergency and no metallic additives. It meets new, voluntary deposit

control standards developed by six automotive companies that exceed the detergent recommendations of Canadian standards and does not contain

metallic additives, which can damage vehicle emission control components.

Where Can TOP TIER Detergent Gasoline Be Purchased?

The TOP TIER program began in the U.S. and Canada on May 3, 2004. Some fuel marketers have already joined and introduced TOP TIER

Detergent Gasoline. This is a voluntary program and not all fuel marketers will offer this product. Once fuel marketers make public announcements,

they will appear on a list of brands that meet the TOP TIER standards.

Who developed TOP TIER Detergent Gasoline standards?

TOP TIER Detergent Gasoline standards were developed by six automotive companies: BMW, General Motors, Honda, Toyota, Volkswagen and

Audi.

Why was TOP TIER Detergent Gasoline developed?

TOP TIER Detergent Gasoline was developed to increase the level of detergent additive in gasoline. In the U.S., government regulations require

that all gasoline sold in the U.S. contain a detergent additive. However, the requirement is minimal and in many cases, is not sufficient to keep

engines clean. In Canada, gasoline standards recommend adherence to U.S. detergency requirements but do not require it. In fact, many brands of

gasoline in Canada do not contain any detergent additive. In order to meet TOP TIER Detergent Gasoline standards, a higher level of detergent is

needed than what is required or recommended, and no metallic additives are allowed. Also, TOP TIER was developed to give fuel marketers the

opportunity to differentiate their product.

Why did the six automotive companies join together to develop TOP TIER?

All six corporations recognized the benefits to both the vehicle and the consumer. Also, joining together emphasized that low detergency and the

intentional addition of metallic additives is an issue of concern to several automotive companies.

What are the benefits of TOP TIER Detergent Gasoline?

TOP TIER Detergent Gasoline will help keep engines cleaner than gasoline containing the "Lowest Additive Concentration" recommended by

Canadian standards. Clean engines help provide optimal fuel economy and engine performance, and also provide reduced emissions. Also, the use

of TOP TIER Detergent Gasoline will help reduce deposit related concerns.

Who should use TOP TIER Detergent Gasoline?

All vehicles will benefit from using TOP TIER Detergent Gasoline over gasoline containing the "Lowest Additive Concentration" recommended by

Canadian standards. Those vehicles that have experienced deposit related concerns may especially benefit from use of TOP TIER Detergent

Gasoline. More information on TOP TIER Detergent Gasoline can be found at this website, http://www.toptiergas.com/.

2010 Cadillac Truck SRX FWD V6-3.0L Page 1476

Circuit/System Verification

1. If DTC P0340, P0345, P0365, or P0390 are also set, diagnose those DTCs first

2. With the ignition OFF, inspect the engine wiring harnesses carrying the B23 camshaft position sensor circuits for the following conditions:

* Close routing of aftermarket electrical equipment

* Close to solenoids, motors, and relays

瀚慍orrect any wire harness routing or component placement conditions if it is determined to be a possible source of electrical interference.

3. Observe the following scan tool parameters are all incrementing:

* Exhaust Camshaft Position Active Counter Bank 1

* Intake Camshaft Position Active Counter Bank 1

* Exhaust Camshaft Position Active Counter Bank 2

* Intake Camshaft Position Active Counter Bank 2

4. 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.

Circuit/System Testing

1. Engine idling, move the related harnesses/connectors of the B23 camshaft position sensor while monitoring the scan tool Camshaft Position

Variance parameter. The Camshaft Position Variance parameter should not change when moving the harness/connectors.

瀚慖f the above condition exists, repair the harness/connectors as necessary.

2. Ignition OFF, inspect the B23 camshaft position sensor for correct installation.

瀚慖f the B23 camshaft position sensor is loose, inspect the sensor and the O-ring for damage and replace as necessary.

3. Disconnect the harness connector at the B23 camshaft position sensor.

4. Ignition OFF, all vehicle systems OFF, this may take 2 minutes, test for less than 5 ohm between the low reference circuit terminal B and

ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20

ECM.

5. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal A and ground.

瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground, or an open/high resistance. If the circuit tests normal,

replace the K20 ECM.

瀚慖f 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.

6. Test for 4.8-5.2 V between the signal circuit terminal C and ground.

瀚慖f 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.

瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

7. Ignition OFF, connect a 3 A fused jumper wire to the camshaft position signal circuit terminal C.

8. Ignition ON, momentarily touch the end of the fused jumper wire to ground while monitoring the scan tool camshaft position active counter.

The camshaft position active counter should increment.

瀚慖f the camshaft position active counter does not increment, replace the K20 ECM.

9. If all circuits test normal, replace the B23 camshaft position sensor.

Component Testing

Note: You must perform the Circuit/System Testing before proceeding with Component Testing.

1. Inspect the B23 camshaft position sensor for looseness and correct installation. Remove the camshaft position sensor from the engine and

inspect the sensor and the O-ring for damage.

瀚慖f the sensor is loose, incorrectly installed, or damaged, repair or replace the B23 crankshaft position sensor.

2. Connect the camshaft position sensor connector to the camshaft position sensor. Turn ON the ignition, with the engine OFF.

3. Ignition ON, observe the applicable camshaft position active counter parameter with a scan tool. Pass a steel object by the tip of the sensor

2010 Cadillac Truck SRX FWD V6-3.0L Page 1972

Circuit/System Description

The engine control module (ECM) supplies voltage to each fuel injector on the injector high voltage supply circuits. The ECM energizes each fuel

injector by grounding the high voltage control circuit of the fuel injector. The ECM monitors the status of the injector high voltage supply circuits

and the fuel injector high voltage control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is

disabled.

Conditions for Running the DTC

* The engine is running.

* The ignition voltage is between 11-18 V.

* The DTCs run continuously when the above conditions are met.

Conditions for Setting the DTC

P2147, P2150, P2153, P2156, P216B, or P216E

The ECM detects the injector high voltage supply circuit is shorted to ground for greater than 2 s.

P2148, P2151, P2154, P2157, P216C, or P216F

The ECM detects the injector high voltage supply circuit is shorted to voltage for greater than 2 s.

Action Taken When the DTC Sets

DTCs P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, and P216F are Type A DTCs.

Conditions for Clearing the DTC

DTCs P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, and P216F are Type A DTCs.

Diagnostic Aids

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (LAU) (See:

Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection)Fuel Injector Solenoid Coil Test (LF1, LFW)

(See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Status parameters. An Injector Control Circuit Status parameter will change from OK or Not Run to Fault if there is a

condition with the circuit or a connection.