Pinpoint Test S: Intermittent No HS-CAN Communication, Communication Can Be Intermittently Established
Communications Network
Pinpoint Test S: Intermittent No High Speed Controller Area Network (HS-CAN) Communication, Communication Can Be Intermittently Established
Normal Operation
The High Speed Controller Area Network (HS-CAN) uses an unshielded twisted pair cable. In the event that 1 of the 2 network circuits (HS-CAN (High Speed Controller Area Network) + or HS-CAN (High Speed Controller Area Network) -) becomes open to a module on the network, unreliable network communication to all modules on the network may result.
- 4X4 control module (if equipped)
- ABS module
- Accessory Protocol Interface Module (APIM) (if equipped)
- Air Conditioning Compressor Module (ACCM) (hybrid)
- Instrument Cluster (IC)
- Occupant Classification System Module (OCSM)
- PCM
- Parking Aid Module (PAM) (if equipped)
- Power Steering Control Module (PSCM)
- Restraints Control Module (RCM)
- Battery Control Module - High Voltage Traction Battery (BCM-HVTB) (hybrid)
- Transmission Control Module (TCM) (hybrid)
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
PINPOINT TEST S : INTERMITTENT NO HS-CAN (High Speed Controller Area Network) COMMUNICATION, COMMUNICATION CAN BE INTERMITTENTLY ESTABLISHED
NOTE: Various modules set network DTCs during this test procedure. Clear the DTCs from all modules after the diagnostic procedure is complete.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.
S1 CHECK THE DLC (Data Link Connector) PINS FOR DAMAGE
- Ignition OFF.
- Disconnect the scan tool cable from the Data Link Connector (DLC).
- Inspect DLC (Data Link Connector) pins 6 and 14 for damage.
Are DLC (Data Link Connector) pins 6 and 14 OK?
Yes
GO to S2.
No
REPAIR the DLC (Data Link Connector) as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
S2 CHECK THE HS-CAN (High Speed Controller Area Network) TERMINATION RESISTANCE
- Disconnect: Negative Battery Cable.
- Measure the resistance between the DLC (Data Link Connector) C251-6, circuit VDB04 (WH/BU), harness side and the DLC (Data Link Connector) C251-14, circuit VDB05 (WH), harness side.
Is the resistance between 54 and 66 ohms?
Yes
GO to S3.
No
GO to Pinpoint Test T Pinpoint Test T: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding.
S3 CHECK THE HS-CAN (High Speed Controller Area Network) (+) AND HS-CAN (High Speed Controller Area Network) (-) CIRCUITS FOR A SHORT TO GROUND
- Measure the resistance between the DLC (Data Link Connector) C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC (Data Link Connector) C251-14, circuit VDB05 (WH), harness side and ground.
Are the resistances greater than 1,000 ohms?
Yes
CONNECT the battery negative cable. GO to S4.
No
GO to Pinpoint Test T Pinpoint Test T: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding.
S4 CHECK THE HS-CAN (High Speed Controller Area Network) (+) AND HS-CAN (High Speed Controller Area Network) (-) CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition ON.
- Measure the voltage between the DLC (Data Link Connector) C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC (Data Link Connector) C251-14, circuit VDB05 (WH), harness side and ground.
Is the voltage greater than 6 volts?
Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
No
GO to S5.
S5 CHECK FOR RESTORED COMMUNICATION WITH THE PCM DISCONNECTED
NOTE: An Integrated Diagnostic System (IDS) session must be established prior to disabling the PCM in this test step. If the PCM has failed communication during multiple attempts to identify the vehicle, first identify the vehicle manually by entering a PCM part number, calibration number or tear tag when prompted by IDS (Integrated Diagnostic System).
NOTE: When a vehicle is manually identified by a PCM part number, calibration number or tear tag, the IDS (Integrated Diagnostic System) does not automatically run a network test. The network test must be manually selected and run.
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: PCM C175B.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
CONNECT the PCM. GO to Pinpoint Test A Pinpoint Test A: The PCM Does Not Respond To The Scan Tool.
No
CONNECT the PCM.
For hybrid, GO to S6.
For non-hybrid, GO to S7.
S6 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE BCM-HVTB (Battery Control Module - High Voltage Traction Battery) DISABLED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: BJB (Battery Junction Box) Fuses 26 (20A) and 8 (10A).
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
INSTALL the removed fuses. GO to Pinpoint Test I Pinpoint Test I: The Battery Control Module - High Voltage Traction Battery (BCM-HVTB) Does Not Respond To The Scan Tool.
No
INSTALL the removed fuses. GO to S7.
S7 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PSCM (Power Steering Control Module), THE 4X4 CONTROL MODULE (IF EQUIPPED) AND THE PAM (Parking Aid Module) (IF EQUIPPED) DISABLED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: SJB (Smart Junction Box) Fuse 35 (10A).
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
INSTALL the removed fuse.
For vehicles equipped with an PSCM (Power Steering Control Module) only, GO to Pinpoint Test G Pinpoint Test G: The Power Steering Control Module (PSCM) Does Not Respond To The Scan Tool.
For vehicles also equipped with a 4X4 control module and/or a PAM (Parking Aid Module), GO to S8.
No
INSTALL the removed fuse. GO to S11.
S8 VERIFY VEHICLE EQUIPMENT - 4X4 CONTROL MODULE
- Inspect the vehicle for a 4X4 control module.
Is the vehicle equipped with a 4X4 control module?
Yes
GO to S9.
No
GO to S10.
S9 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE 4X4 CONTROL MODULE DISCONNECTED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: 4X4 Control Module C3184.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
CONNECT the 4X4 control module. GO to Pinpoint Test D Pinpoint Test D: The 4X4 Control Module Does Not Respond To The Scan Tool.
No
CONNECT the 4X4 control module. GO to S10.
S10 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PAM (Parking Aid Module) DISCONNECTED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: PAM (Parking Aid Module) C4014.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
CONNECT the PAM (Parking Aid Module). GO to Pinpoint Test J Pinpoint Test J: The Parking Aid Module (PAM) Does Not Respond To The Scan Tool.
No
CONNECT the PAM (Parking Aid Module). GO to S11.
S11 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RCM (Restraints Control Module) DISABLED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: SJB (Smart Junction Box) Fuse 31 (10A).
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
INSTALL the removed fuse. GO to Pinpoint Test E Pinpoint Test E: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool.
No
INSTALL the removed fuse. GO to S12.
S12 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE OCSM (Occupant Classification System Module) DISABLED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: SJB (Smart Junction Box) Fuse 46 (7.5A).
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
INSTALL the removed fuse. GO to Pinpoint Test F Pinpoint Test F: The Occupant Classification System Module (OCSM) Does Not Respond To The Scan Tool.
No
INSTALL the removed fuse. GO to S13.
S13 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE IC (Instrument Cluster) DISABLED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: SJB (Smart Junction Box) Fuses 26 (10A) and 29 (5A).
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
INSTALL the removed fuses. GO to Pinpoint Test C Pinpoint Test C: The Instrument Cluster (IC) Does Not Respond To The Scan Tool.
No
INSTALL the removed fuses.
If the vehicle is equipped with an Accessory Protocol Interface Module (APIM), GO to S14.
If the vehicle is not equipped with an APIM (Accessory Protocol Interface Module), GO to S15.
S14 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE APIM (Accessory Protocol Interface Module) DISABLED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: SJB (Smart Junction Box) Fuse 3 (15A).
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
INSTALL the removed fuse. GO to Pinpoint Test R Pinpoint Test R: The Accessory Protocol Interface Module (APIM) Does Not Respond To The Scan Tool.
No
INSTALL the removed fuse. GO to S15.
S15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ABS MODULE AND THE ACCM (Air Conditioning Compressor Module) (IF EQUIPPED) DISABLED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: For non-hybrid vehicles:BJB (Battery Junction Box) Fuse 25 (5A). For hybrid vehicles BJB (Battery Junction Box) Fuse 27 (10A).
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
INSTALL the removed fuses.
For non-hybrid, GO to Pinpoint Test B Pinpoint Test B: The ABS Module Does Not Respond To The Scan Tool.
For hybrid, GO to S16.
No
INSTALL the removed fuses. GO to S17.
S16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ABS MODULE DISCONNECTED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: ABS Module C155.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
CONNECT the ABS module. GO to Pinpoint Test B Pinpoint Test B: The ABS Module Does Not Respond To The Scan Tool.
No
CONNECT the ABS module.
For lost communication with the ABS (Anti-Lock Brake System) and ACCM (Air Conditioning Compressor Module) only GO to Pinpoint Test K Pinpoint Test K: The Air Conditioning Compressor Module (ACCM) Does Not Respond To The Scan Tool.
For lost communication with any other modules GO to S17.
S17 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE TCM (Transmission Control Module) DISABLED
NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results.
- Disconnect: BJB (Battery Junction Box) Fuses 5 (10A) and 24 (10A).
- Enter the following diagnostic mode on the scan tool: Network Test.
- Repeat the network test.
Do all other modules pass the network test?
Yes
INSTALL the removed fuses. GO to Pinpoint Test H Pinpoint Test H: The Transmission Control Module (TCM) Does Not Respond To The Scan Tool.
No
INSTALL the removed fuses. An intermittent fault is not present. GO to Pinpoint Test T Pinpoint Test T: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding.