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Diagnostic Routine AD




Diagnostic Routine AD

Diagnostic Overview

No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding

Refer to Wiring Diagram Set 14 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

REFER to High Speed Controller Area Network (HS-CAN) .

REFER to Controller Area Network (CAN) Fault Tolerance .

Pinpoint Test

1. CHECK THE DLC (Data Link Connector) PINS FOR DAMAGE

1. Ignition OFF.

2. Disconnect the scan tool cable from the DLC (Data Link Connector).

3. Inspect the DLC (Data Link Connector) pins 6 and 14 for damage.





Are DLC (Data Link Connector) pins 6 and 14 OK?






2. CHECK THE HS-CAN (High Speed Controller Area Network) TERMINATION RESISTANCE

1. Measure:





Is the resistance between 54 and 66 ohms?






3. CHECK THE HS-CAN (High Speed Controller Area Network) (+) AND HS-CAN (High Speed Controller Area Network) (-) CIRCUITS FOR A SHORT TO GROUND

1. Measure:





Are the resistances greater than 1,000 ohms?






4. CHECK THE HS-CAN (High Speed Controller Area Network) (+) AND HS-CAN (High Speed Controller Area Network) (-) CIRCUITS FOR A SHORT TO VOLTAGE

1. Ignition ON.

2. Measure:





Is the voltage greater than 6 volts on either circuit?






5. CHECK THE HS-CAN (High Speed Controller Area Network) TERMINATION RESISTOR

1. Measure:





Is the resistance between 108 and 132 ohms?






6. CHECK THE HS-CAN (High Speed Controller Area Network) TERMINATION RESISTOR WITH THE PCM (Powertrain Control Module) DISCONNECTED

1. Disconnect: PCM (Powertrain Control Module) C175B.

2. Measure:





Is the resistance between 108 and 132 ohms?






7. CHECK THE HS-CAN (High Speed Controller Area Network) CIRCUITS BETWEEN THE PCM (Powertrain Control Module) AND THE DLC (Data Link Connector) FOR AN OPEN

1. Measure:





Are the resistances less than 3 ohms?






8. CHECK THE HS-CAN (High Speed Controller Area Network) CIRCUITS BETWEEN THE BCM (Body Control Module) AND THE DLC (Data Link Connector) FOR AN OPEN

1. Disconnect: BCM (Body Control Module) C2280C.

2. Measure:





Are the resistances less than 3 ohms?






9. CHECK THE HS-CAN (High Speed Controller Area Network) (+) AND HS-CAN (High Speed Controller Area Network) (-) CIRCUITS FOR A SHORT TOGETHER

1. Measure:





Is the resistance less than 3 ohms?






10. CHECK THE HS-CAN (High Speed Controller Area Network) CIRCUITS BETWEEN THE PCM (Powertrain Control Module) AND THE DLC (Data Link Connector) FOR AN OPEN

1. Measure:





Is the resistance greater than 10,000 ohms?






11. CHECK THE HS-CAN (High Speed Controller Area Network) (+) AND HS-CAN (High Speed Controller Area Network) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

1. Measure:





2. Disconnect modules one at a time until the resistance is greater than 5 ohms.

- APIM (Accessory Protocol Interface Module) (if equipped)
- ABS (Anti-Lock Brake System) module
- BCM (Body Control Module) C2280C
- OCSM (Occupant Classification System Module)
- PAM (Parking Aid Module) C4014A (if equipped)
- PSCM (Power Steering Control Module) C1463A
- PCM (Powertrain Control Module) C175B
- RCM (Restraints Control Module) C310A
- SASM (Steering Angle Sensor Module) C2414A
- TCM (Transmission Control Module) C1750A (if equipped)

Did the resistance change to greater than 5 ohms with one of the modules disconnected?






12. CHECK THE HS-CAN (High Speed Controller Area Network) (+) AND HS-CAN (High Speed Controller Area Network) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

1. Measure:





2. Disconnect modules one at a time until the resistance to ground is greater than 1000 ohms.

- APIM (Accessory Protocol Interface Module) (if equipped)
- ABS (Anti-Lock Brake System) module
- BCM (Body Control Module) C2280C
- OCSM (Occupant Classification System Module)
- PAM (Parking Aid Module) C4014A (if equipped)
- PSCM (Power Steering Control Module) C1463A
- PCM (Powertrain Control Module) C175B
- RCM (Restraints Control Module) C310A
- SASM (Steering Angle Sensor Module) C2414A
- TCM (Transmission Control Module) C1750A (if equipped)

Did the resistance change to greater than 1,000 ohms with one of the modules disconnected?






13. CHECK FOR RESTORED COMMUNICATION WITH THE PCM (Powertrain Control Module) DISABLED

NOTE: Establish an IDS (Integrated Diagnostic System) session prior to disabling the PCM (Powertrain Control Module) in this test step. If the PCM (Powertrain Control Module) has failed communication during multiple attempts to identify the vehicle, first identify the vehicle manually by entering a PCM (Powertrain Control Module) part number, calibration number or tear tag when prompted by IDS (Integrated Diagnostic System).When a vehicle is manually identified by a PCM (Powertrain Control Module) part number, calibration number or tear tag, the IDS (Integrated Diagnostic System) does not automatically run a network test. Manually select and run the network test.
When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

1. Disconnect: BJB (Battery Junction Box) fuses 38 (15A) and 36 (10A).

2. Using a scan tool, perform the network test.

Do all other modules pass the network test?






14. CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ABS (Anti-Lock Brake System) MODULE AND THE TCM (Transmission Control Module) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

1. Disconnect: BJB (Battery Junction Box) fuses 7 (40A), 8 (30A) and 19 (5A) to disable the ABS (Anti-Lock Brake System) module.

2. Using a scan tool, perform the network test.

3. Install the removed fuses.

4. Disconnect: BJB (Battery Junction Box) fuses 15 (25A), 26 (15A) and 38 (15A) to disable the TCM (Transmission Control Module) (if equipped).

5. Using a scan tool, perform the network test.

Do all other modules pass the network test?






15. CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SASM (Steering Angle Sensor Module), PSCM (Power Steering Control Module), APIM (Accessory Protocol Interface Module) AND THE PAM (Parking Aid Module) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

1. Disable module one at a time until other HS-CAN (High Speed Controller Area Network) modules pass the network test. Skip to the end once network operation is restored.

2. Disconnect: BCM (Body Control Module) fuse 72 (7.5A) to disable the SASM (Steering Angle Sensor Module).

3. Using a scan tool, perform the network test.

4. Install the removed fuse.

5. Disconnect: BJB (Battery Junction Box) fuse 40 (5A) to disable the PSCM (Power Steering Control Module).

6. Using a scan tool, perform the network test.

7. Install the removed fuse.

8. Disconnect: BCM (Body Control Module) fuses 67 (7.5A) to disable the APIM (Accessory Protocol Interface Module) (if equipped).

9. Using a scan tool, perform the network test.

10. Install the removed fuse.

11. Disconnect: RJB (Rear Junction Box) fuse 30 (5A) to disable the PAM (Parking Aid Module) (if equipped).

12. Using a scan tool, perform the network test.

Do all other HS-CAN (High Speed Controller Area Network) modules pass the network test?






16. CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RCM (Restraints Control Module) AND OCSM (Occupant Classification System Module) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

1. Disconnect: BCM (Body Control Module) fuses 86 (10A)

2. Using a scan tool, perform the network test.

Do all other modules pass the network test?






17. CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RCM (Restraints Control Module) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

1. Disconnect: RCM (Restraints Control Module) C310A.

2. Using a scan tool, perform the network test.

Do all other modules pass the network test?






18. CHECK FOR CORRECT OPERATION

1. Ignition OFF.

2. Disconnect and inspect the APIM (Accessory Protocol Interface Module) connector.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the APIM (Accessory Protocol Interface Module) connector. Make sure it seats and latches correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






19. CHECK FOR CORRECT ABS (Anti-Lock Brake System) MODULE OPERATION

1. Ignition OFF.

2. Disconnect and inspect the ABS (Anti-Lock Brake System) module connector.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the ABS (Anti-Lock Brake System) module connector. Make sure it seats and latches correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






20. CHECK FOR CORRECT BCM (Body Control Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all the BCM (Body Control Module) connectors.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the BCM (Body Control Module) connectors. Make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






21. CHECK FOR CORRECT PSCM (Power Steering Control Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all the PSCM (Power Steering Control Module) connectors.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the PSCM (Power Steering Control Module) connectors. Make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






22. CHECK FOR CORRECT OCSM (Occupant Classification System Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect the OCSM (Occupant Classification System Module) connector.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the OCSM (Occupant Classification System Module) connector. Make sure it seats and latches correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






23. CHECK FOR CORRECT PAM (Parking Aid Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect the PAM (Parking Aid Module) connector.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the PAM (Parking Aid Module) connector. Make sure it seats and latches correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






24. CHECK FOR CORRECT PCM (Powertrain Control Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all the PCM (Powertrain Control Module) connectors.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the PCM (Powertrain Control Module) connectors. Make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






25. CHECK FOR CORRECT RCM (Restraints Control Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all the RCM (Restraints Control Module) connectors.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the RCM (Restraints Control Module) connectors. Make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






26. CHECK FOR CORRECT SASM (Steering Angle Sensor Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all the SASM (Steering Angle Sensor Module) connectors.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the SASM (Steering Angle Sensor Module) connectors. Make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






27. CHECK FOR CORRECT TCM (Transmission Control Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all the TCM (Transmission Control Module) connectors.

3. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

4. Reconnect the TCM (Transmission Control Module) connectors. Make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?





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