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Home >> Ford >> 2010 >> Taurus AWD V6-3.5L Turbo >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Test AB: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding >> Part 3

Part 3




Communications Network


Pinpoint Tests

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

Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. Diagrams By Number

Normal Operation

The High Speed Controller Area Network (HS-CAN) uses an unshielded twisted pair cable.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- 4X4 control module (if equipped)
- ABS module
- Accessory Protocol Interface Module (APIM) (if equipped)
- Cruise-Control Module (C-CM) (if equipped)
- Head Up Display (HUD) module (if equipped)
- Instrument Panel Cluster (IPC) (gateway module)
- Occupant Classification System Module (OCSM)
- Parking Aid Module (PAM) (if equipped)
- PCM
- Power Steering Control Module (PSCM)
- Remote Function Actuator (RFA) module (if equipped)
- Restraints Control Module (RCM)



PINPOINT TEST AB: NO HS-CAN COMMUNICATION, ALL MODULES ARE NOT RESPONDING

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test. Inspection and Verification

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.

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AB31 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE IPC DISCONNECTED


- Disconnect: IPC C220 .
- Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground.




- Are the resistances greater than 1,000 ohms?

Yes
CONNECT the negative battery cable. GO to AB43.

No
If the vehicle is equipped with an Accessory Protocol Interface Module (APIM), GO to AB32.

If the vehicle is not equipped with an APIM, GO to AB33.

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AB32 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE APIM DISCONNECTED


- Disconnect: APIM C3342 .
- Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground.




- Are the resistances greater than 1,000 ohms?

Yes
CONNECT the negative battery cable. GO to AB44.

No
GO to AB33.

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AB33 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE PSCM DISCONNECTED


- Disconnect: Power Steering Control Module (PSCM) C1463a .
- Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground.




- Are the resistances greater than 1,000 ohms?

Yes
CONNECT the negative battery cable. GO to AB45.

No
If the vehicle is equipped with a Head Up Display (HUD) module, GO to AB34.

If the vehicle is not equipped with an HUD module, REPAIR the circuits. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.

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AB34 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE HUD MODULE DISCONNECTED


- Disconnect: HUD Module C2395 .
- Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground.




- Are the resistances greater than 1,000 ohms?

Yes
CONNECT the negative battery cable. GO to AB46.

No
REPAIR the circuits. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.

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AB35 CHECK FOR CORRECT PCM OPERATION


- Disconnect all the PCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the PCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new PCM. REFER to the appropriate system in Computers and Control Systems. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

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AB36 CHECK FOR CORRECT PAM OPERATION


- Disconnect the PAM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the PAM connector and make sure it seats correctly.
- Verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new PAM. REFER to Collision Avoidance and Parking Assist Systems. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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AB37 CHECK FOR CORRECT ABS MODULE OPERATION


- Disconnect the ABS module connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the ABS module connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new ABS module. REFER to Antilock Brakes / Traction Control Systems. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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AB38 CHECK FOR CORRECT 4X4 CONTROL MODULE OPERATION


- Disconnect the 4X4 control module connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the 4X4 control module connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new 4X4 control module. REFER to Transfer Case. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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AB39 CHECK FOR CORRECT RCM OPERATION


- Disconnect all the RCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the RCM connectors and make sure they seat correctly.
- Verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new RCM. REFER to Restraint Systems. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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AB40 CHECK FOR CORRECT RFA MODULE OPERATION


- Disconnect all the RFA module connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the RFA module connectors and make sure they seat correctly.
- Verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new RFA module. REFER to Body Control Systems. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules. REPEAT the network test with the scan tool.

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AB41 CHECK FOR CORRECT OCSM OPERATION


- Disconnect the OCSM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the OCSM connector and make sure it seats correctly.
- Verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new OCSM. REFER to Restraint Systems. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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AB42 CHECK FOR CORRECT C-CM OPERATION


- Disconnect the C-CM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the C-CM connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new C-CM. REFER to Fire Suppression System. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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AB43 CHECK FOR CORRECT IPC OPERATION


- Disconnect the IPC connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the IPC connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new IPC. REFER to Instrument Panel, Gauges and Warning Indicators. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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AB44 CHECK FOR CORRECT APIM OPERATION


- Disconnect all the APIM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the APIM connectors and make sure they seat correctly.
- Verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new APIM. REFER to Accessories and Optional Equipment. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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AB45 CHECK FOR CORRECT PSCM OPERATION


- Disconnect all the PSCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the PSCM connectors and make sure they seat correctly.
- Verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new PSCM. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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AB46 CHECK FOR CORRECT HUD MODULE OPERATION


- Disconnect the HUD module connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the HUD module connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new HUD module. REFER to Fire Suppression System. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

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