Module Communications Network: Diagnosis — Ford Fiesta Mk6 (2008-2013)

Inspection and Verification

Verify the customer concern.
Visually inspect for obvious signs of electrical damage. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step. VISUAL INSPECTION CHART Electrical Battery Junction Box (BJB) fuse(s): 1 (40A) (ABS module) 2 (50A) (Transmission Control Module (TCM)) 9 (20A) (ABS module) 16 (15A) (PCM) 27 (7.5A) (PCM, TCM ) Central Junction Box (CJB) fuse(s): 1 (15A) (Remote Function Actuator (RFA) module) 3 (7.5A) (Instrument Panel Cluster (IPC)) 4 (7.5A) (Occupant Classification System Module (OCSM)) 5 (15A) (no power to scan tool) 7 (7.5A) (Front Control/Display Interface Module (FCDIM)) 9 (20A) ( RFA module) 10 (15A) (Audio Control Module (ACM), Accessory Protocol Interface Module (APIM)) 12 (20A) (Tire Pressure Monitor (TPM)/Vehicle Security Module (VSM)) 14 (20A) ( RFA module) 16 (15A) (Global Positioning System Module (GPSM)) 19 (7.5A) ( ACM , IPC ) 20 (10A) (Restraints Control Module (RCM)) 21 (10A) (Body Control Module (BCM), IPC , Power Steering Control Module (PSCM)) 22 (7.5A) (ABS module, PCM) 23 (10A) ( TCM , TPM / VSM ) 26 (7.5A) ( TPM / VSM ) Data Link Connector (DLC) Wiring, terminals or connectors
Connect the scan tool to the DLC . NOTE: Make sure to use the latest scan tool software release NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM . If the Integrated Diagnostic System (IDS) does not communicate with the VCM : Check the VCM connection to the vehicle. Check the scan tool connection to the VCM . Go to «PINPOINT TEST R»(ref-382388-S34727895612011012300000) , to diagnose No Power To The Scan Tool.
Establish a scan tool session. NOTE: The scan tool first attempts to communicate with the PCM, after establishing communication with the PCM, the scan tool then attempts to communicate with all other modules on the vehicle If an IDS session cannot be established with the vehicle, ( IDS may state "No communication can be established with the PCM"): Choose "NO" when the scan tool prompts whether or not to retry communication. Enter either a PCM part number, tear tag or calibration number to identify the vehicle and start a session (the PCM part number and 4-character tear tag are printed on the PCM label). Go to «PINPOINT TEST A»(ref-382388-S25885272082011012300000) , to diagnose The PCM Does Not Respond To The Scan Tool.
Carry out the network test. If the network test passes, retrieve and record the continuous memory DTCs and proceed to Step 6. If the network test fails, go to «SYMPTOM CHART»(ref-382388-S30280264532011012300000) to diagnose the failed communication network. If a module fails to communicate during the network test, go to «SYMPTOM CHART»(ref-382388-S30280264532011012300000) .
Retrieve and review the DTCs. If the DTCs retrieved are related to the concern, go to «DTC CHARTS»(ref-382388-S16622691502011012300000) . Follow the non-network DTC diagnostics (B-codes, C-codes, P-codes) prior to the network DTC diagnostics (U-codes). If no DTCs related to the concern are retrieved, go to «SYMPTOM CHART»(ref-382388-S30280264532011012300000) .

DTC Charts

Note. Network DTCs (U-codes) are often a result of intermittent concerns such as damaged wiring or low battery voltage occurrences. Additionally, repair procedures such as module reprogramming often set network DTCs. Replacing a module to resolve a network DTC is unlikely to correct the concern. To prevent repeat network DTC concerns, inspect all network wiring, especially connectors. Test the vehicle battery, refer to BATTERY, MOUNTING AND CABLES .

Communication Network DTC Chart

DTC	Description	Source	Action
U0001:00	High Speed Controller Area Network (HS-CAN) Communication Bus: no subtype information	RFA	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article or schematic and connector information. f
U0001:88	High Speed Controller Area Network (HS-CAN) Communication Bus	ABS module PSCM PCM	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
U0002:81	High Speed Controller Area Network (HS-CAN) Communication Bus Performance	PCM	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
U0010:00	Medium Speed Controller Area Network (MS-CAN) Communication Bus: no subtype information	RFA	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
U0010:88	Medium Speed Controller Area Network (MS-CAN) Communication Bus	BCM FCDIM	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
U0028:00	Vehicle Communication Bus A	TCM	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
U0028:08	Vehicle Communication Bus A: Bus Signal/Message Failures	RCM	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
U0028:88	Vehicle Communication Bus A: Bus Off	RCM	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
U0073:00	Control Module Communication Bus "A" Off	TCM	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
U0074:88	Infotainment Controller Area Network (ICAN) Communication Bus	FCDIM	The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
U3000:88	Control Module: Bus Off	APIM	The module could not communicate on the network at a point in time. The fault is currently not present since the module is currently communicating with the scan tool reporting this DTC. CLEAR the DTC. REPEAT the network test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

COMMUNICATION NETWORK DTC CHART

Symptom Chart

Condition	Possible Sources	Action
The vehicle does not start with the scan tool connected to the Data Link Connector (DLC) and/or multiple malfunction indicators are only on when the scan tool is connected to the DLC .	Wiring, terminals or connectors Scan tool	Go to PINPOINT TEST R .
The PCM does not respond to the scan tool	Wiring, terminals or connectors PCM	Refer to the ENGINE EMISSION CONTROL article , Group 5, pinpoint test QA before proceeding to PINPOINT TEST A . If pinpoint test QA has been completed, go to PINPOINT TEST A .
The ABS module does not respond to the scan tool	Fuse Wiring, terminals or connectors ABS module	Go to PINPOINT TEST B .
The Instrument Panel Cluster (IPC) does not respond to the scan tool	Fuse(s) Wiring, terminals or connectors IPC	Go to PINPOINT TEST C .
The Occupant Classification System Module (OCSM) does not respond to the scan tool	Fuse Wiring, terminals or connectors OCSM	Go to PINPOINT TEST D .
The Restraints Control Module (RCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors RCM	Go to PINPOINT TEST E .
The Accessory Protocol Interface Module (APIM) does not respond to the scan tool	Fuse Wiring, terminals or connectors APIM	Go to PINPOINT TEST F .
The Remote Function Actuator (RFA) module does not respond to the scan tool	Fuse Wiring, terminals or connectors RFA module	Go to PINPOINT TEST G .
The Front Control/Display Interface Module (FCDIM) does not respond to the scan tool	Fuse Wiring, terminals or connectors FCDIM	Go to PINPOINT TEST H .
The Power Steering Control Module (PSCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors PSCM	Go to PINPOINT TEST I .
The Body Control Module (BCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors BCM	Go to PINPOINT TEST J .
The Audio Control Module (ACM) does not respond to the scan tool	Fuse Wiring, terminals or connectors ACM	Go to PINPOINT TEST K .
The Global Positioning System Module (GPSM) does not respond to the scan tool	Fuse Wiring, terminals or connectors GPSM	Go to PINPOINT TEST L .
The Transmission Control Module (TCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors TCM	Go to PINPOINT TEST M .
The Tire Pressure Monitor (TPM)/Vehicle Security Module (VSM) does not respond to the scan tool	Fuse Wiring, terminals or connectors TPM / VSM	Go to PINPOINT TEST N .
No Medium Speed Controller Area Network (MS-CAN) communication, all modules are not responding	Wiring, terminals or connectors BCM FCDIM IPC RFA module (if equipped) TPM / VSM (if equipped)	Go to PINPOINT TEST O .
No High Speed Controller Area Network (HS-CAN) communication, all modules are not responding	Wiring, terminals or connectors ABS module APIM (if equipped) IPC OCSM PCM PSCM RCM RFA module (if equipped) TCM (if equipped)	Go to PINPOINT TEST P .
No Infotainment Controller Area Network (ICAN) communication, all modules are not responding	Wiring, terminals or connectors ACM APIM FCDIM GPSM	Go to PINPOINT TEST Q .
No power to the scan tool	Fuse Wiring, terminals or connectors Scan tool Data Link Connector (DLC)	Go to PINPOINT TEST R .

SYMPTOM CHART

Pinpoint Test A: The PCM Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information for Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Electronic Engine Controls.

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 2

Scheme 2: PINPOINT TEST A: THE PCM DOES NOT RESPOND TO THE SCAN TOOL

Scheme 3

Scheme 4

A1 VERIFY WHETHER OTHER HS-CAN MODULES PASS THE NETWORK TEST Enter the following diagnostic mode on the scan tool: Network Test. In the left hand pane of the IDS network test display screen, verify whether any HS-CAN modules passed the network test. Is the text "pass" or a DTC listed next to any of the following modules (if equipped): ABS module, Accessory Protocol Interface Module (APIM), Instrument Panel Cluster (IPC), Occupant Classification System Module (OCSM), Power Steering Control Module (PSCM), PCM, Remote Function Actuator (RFA), Restraints Control Module (RCM) or Transmission Control Module (TCM)? Yes: If "pass" or a DTC was listed next to the PCM, a network fault is not currently present. Go to «PINPOINT TEST R»(ref-382388-S34727895612011012300000) to diagnose an intermittent HS-CAN fault condition. If "pass" or a DTC was listed next to one or more modules other than the PCM, Go to A2 . No: No modules are currently communicating on the HS-CAN . Go to «PINPOINT TEST Q»(ref-382388-S33699992902011012300000) to diagnose no HS-CAN communication.
A2 PC/ED MANUAL PINPOINT TEST QA VERIFICATION CHECK Verify that pinpoint test QA has been carried out. Has pinpoint test QA been carried out? Yes: Go to A3 . No: Refer to the «ELECTRONIC ENGINE CONTROLS»(ref-382403) article , Group 5, pinpoint test QA to diagnose no communication with the PCM.
A3 CHECK THE HS-CAN TERMINATION RESISTANCE Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the Data Link Connector (DLC) C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Is the resistance between 54 and 66 ohms? Yes: CONNECT the negative battery cable. Go to A5 . No: Go to A4 .
A4 CHECK THE Checking HS-CAN CIRCUITS BETWEEN THE PCM AND THE DLC FOR AN OPEN Disconnect: PCM C175B. Measure the resistance between the PCM C175B-20, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the PCM C175B-19, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to A5 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
A5 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 «ELECTRONIC ENGINE CONTROLS»(ref-382403) . 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. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test B: The ABS Module Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Vehicle Dynamic Systems.

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 5

Scheme 5: PINPOINT TEST B: THE ABS MODULE DOES NOT RESPOND TO THE SCAN TOOL

Scheme 6

Scheme 7

Scheme 8

B1 CHECK THE ABS MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: ABS Module C135. Ignition ON. Measure the voltage between the ABS module, circuit SBB01 (RD), C135-8, circuit CBP22 (GN/WH) and C135-32, circuit SBB28 (GN/RD), harness side and ground. Are the voltages greater than 10 volts? Yes: Go to B2 . No: VERIFY the Battery Junction Box (BJB) fuses 1 (40A), 9 (20A) and Central Junction Box (CJB) fuse 22 (7.5A) are OK. If OK, REPAIR the circuit in question. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
B2 CHECK THE ABS MODULE GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the ABS module, circuit GD123 (BK/GY), harness side and ground. Is the resistance less than 5 ohms? Yes: Go to B3 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
B3 CHECK THE HS-CAN CIRCUITS BETWEEN THE ABS MODULE AND THE DLC FOR AN OPEN Measure the resistance between the ABS module, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the ABS module, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to B4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
B4 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 «VEHICLE DYNAMIC SYSTEMS»(ref-382397) . 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. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test C: The Instrument Panel Cluster (IPC) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Instrument Cluster.

PINPOINT TEST C: THE IPC DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .

Scheme 9

Scheme 9: PINPOINT TEST C: THE IPC DOES NOT RESPOND TO THE SCAN TOOL

Scheme 10

Scheme 11

Scheme 12

Scheme 13

Scheme 14

Scheme 15

C1 CHECK THE HS-CAN TERMINATION RESISTANCE Ignition OFF. Disconnect: Negative Battery Cable. Disconnect the scan tool cable from the Data Link Connector (DLC). Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Is the resistance between 54 and 66 ohms? Yes: CONNECT the negative battery cable. Go to C2 . No: Go to C4 .
C2 CHECK THE IPC VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: IPC C220. Ignition ON. Measure the voltage between the IPC , harness side and ground as follows: CONNECTOR-PIN REFERENCE CHART Connector-Pin Circuit C220-4 CBP21 (BU/GY) C220-15 CBP19 (BN/WH) C220-32 SBP03 (BU/RD) Are the voltages greater than 10 volts? Yes: Go to C3 . No: VERIFY the Central Junction Box (CJB) fuse 3 (7.5A), 19 (7.5A) and 21 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
C3 CHECK THE IPC GROUND CIRCUIT FOR AN OPEN Disconnect: Negative Battery Cable. Measure the resistance between IPC C220-6, circuit GD115 (BK/GY) harness side and ground. Is the resistance less than 5 ohms? Yes: Go to C4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
C4 CHECK THE HS-CAN CIRCUITS BETWEEN THE IPC AND THE DLC FOR AN OPEN Measure the resistance between the IPC C220-18, circuit VDB04 (WH/BU), harness side and the Data Link Connector (DLC) C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the IPC C220-17, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: Go to C5 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
C5 CHECK THE MS-CAN CIRCUITS BETWEEN THE IPC AND THE DLC FOR AN OPEN Measure the resistance between the IPC C220-23, circuit VDB06 (GY/OG), harness side and the Data Link Connector (DLC) C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the IPC C220-22, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to C6 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
C6 CHECK FOR CORRECT IPC OPERATION Disconnect all the IPC connectors. Check for: corrosion damaged pins pushed-out pins Connect all the IPC 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 IPC . Refer to «INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES»(ref-382387) . 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.

Pinpoint Test D: The Occupant Classification System Module (OCSM) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Supplemental Restraint System.

PINPOINT TEST D: THE OCSM DOES NOT RESPOND TO THE SCAN TOOL

WARNING

Never disassemble or tamper with safety belt buckle/retractor pretensioners or adaptive load limiting retractors or probe the electrical connectors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors which increases the risk of serious personal injury or death.

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

Note. The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 16

Scheme 17

Scheme 18

Scheme 19

D1 CHECK THE OCSM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Depower the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . Disconnect: OCSM C3159. Deactivate the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . Repower the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . Ignition ON. Measure the voltage between the OCSM C3159-1, circuit CBP04 (VT), harness side and ground. Is the voltage greater than 10 volts? Yes: Go to D2 . No: VERIFY the Central Junction Box (CJB) fuse 4 (7.5A) is OK. If OK, repair the circuit. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. REACTIVATE the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . CLEAR the DTCs. REPEAT the network test with the scan tool.
D2 CHECK THE OCSM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the OCSM C3159-14, circuit GD145 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes: Go to D3 . No: REPAIR the circuit. REACTIVATE the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . CLEAR the DTCs. REPEAT the network test with the scan tool.
D3 CHECK THE HS-CAN CIRCUITS BETWEEN THE OCSM AND THE DATA LINK CONNECTOR (DLC) FOR AN OPEN Measure the resistance between the OCSM C3159-18, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the OCSM C3159-9, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to D4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
D4 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 . REACTIVATE the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . 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. REACTIVATE the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test E: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Supplemental Restraint System.

PINPOINT TEST E: THE RCM DOES NOT RESPOND TO THE SCAN TOOL

WARNING

Never probe the electrical connectors on air bag, Safety Canopy® or side air curtain modules. Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

Note. The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 20

Scheme 21

Scheme 22

Scheme 23

E1 CHECK THE RCM CONNECTION Ignition OFF. Depower the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . Disconnect: RCM C310A. Disconnect: RCM C310B. Are RCM C310A pins 13 and 14 and RCM C310B pins 9 and 10 OK? Yes: Go to E2 . No: REPAIR the RCM connector pins as necessary. REPOWER the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . CLEAR the DTCs. REPEAT the network test with the scan tool.
E2 CHECK THE RCM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Deactivate the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . Repower the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . Ignition ON. Measure the voltage between the RCM C310A-13, circuit CBP20 (YE/VT), harness side and ground. Is the voltage greater than 10 volts? Yes: Go to E3 . No: VERIFY the Central Junction Box (CJB) fuse 20 (10A) is OK. If OK, repair the appropriate SYSTEM WIRING DIAGRAMS article. If not OK, refer to the to identify the possible causes of the circuit short. REACTIVATE the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . Clear the DTCs. Repeat the network test with the scan tool.
E3 CHECK THE RCM CASE GROUND Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the RCM C310A-14, circuit GD174 (BK/WH), harness side and ground. Is the resistance less than 5 ohms? Yes: Go to E4 . No: REPAIR the circuit. REACTIVATE the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . CLEAR the DTCs. REPEAT the network test with the scan tool.
E4 CHECK THE HS-CAN CIRCUITS BETWEEN THE RCM AND THE DLC FOR AN OPEN Measure the resistance between the RCM C310B-10, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the RCM C310B-9, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to E5 . No: REPAIR the circuit in question. REACTIVATE the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . CLEAR the DTCs. REPEAT the network test with the scan tool.
E5 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. Operate the system and verify the concern is still present. Is the concern still present? Yes: INSTALL a new RCM . REACTIVATE the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . 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. REACTIVATE the SRS . Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST F: The Accessory Protocol Interface Module (APIM) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Audio System/Navigation.

PINPOINT TEST F: THE APIM DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 24

Scheme 24: PINPOINT TEST F: THE APIM DOES NOT RESPOND TO THE SCAN TOOL

Scheme 25

Scheme 26

Scheme 27

Scheme 28

Scheme 29

F1 CHECK THE APIM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: APIM C2383. Ignition ON. Measure the voltage between the APIM C2383-1, circuit SBP10 (YE/RD), harness side and ground. Is the voltage greater than 10 volts? Yes: Go to F2 . No: VERIFY the Central Junction Box (CJB) fuse 10 (15A) is OK. If OK, REPAIR the circuit. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
F2 CHECK THE APIM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the voltage between the APIM , harness side and ground as follows: CONNECTOR-PIN REFERENCE CHART Connector-Pin Circuit C2383-6 GD111 (BK/BU) C2383-37 GD111 (BK/BU) C2383-38 GD111 (BK/BU) Are the resistances less than 5 ohms? Yes: Go to F3 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
F3 CHECK THE HS-CAN CIRCUITS BETWEEN THE APIM AND THE DLC FOR AN OPEN Measure the resistance between the APIM C2383-53, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the APIM C2383-54, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: Go to F4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
F4 CHECK THE ICAN CIRCUITS BETWEEN THE APIM AND THE DLC FOR AN OPEN Measure the resistance between the APIM C2383-16, circuit VDB06 (GY/OG), harness side and the DLC C251-1, circuit VDB06 (GY/OG), harness side. Measure the resistance between the APIM C2383-17, circuit VDB07 (VT/OG), harness side and the DLC C251-9, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to F5 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
F5 CHECK FOR CORRECT APIM OPERATION Disconnect the APIM connector. Check for: corrosion damaged pins pushed-out pins Connect the APIM 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 APIM . Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . 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. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST G: The Remote Function Actuator (RFA) Module Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Power Door Locks.

PINPOINT TEST G: THE RFA MODULE DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 30

Scheme 30: PINPOINT TEST G: THE RFA MODULE DOES NOT RESPOND TO THE SCAN TOOL

Scheme 31

Scheme 32

Scheme 33

Scheme 34

Scheme 35

Scheme 36

Scheme 37

G1 CHECK THE RFA MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: RFA module (Gray Hardshell) and C3503B (Green Hardshell). Ignition ON. Measure the voltage between the RFA module, circuit SBP09 (RD), harness side and ground; and C3503A-2, circuit SBP14 (BN/RD), harness side and ground. Measure the voltage between the RFA module, circuit CDC32 (BN/YE), harness side and ground. Are the voltages greater than 10 volts? Yes: Go to G2 . No: VERIFY the Central Junction Box (CJB) fuses 1 (15A), 9 (20A) and 14 (20A) are OK. If OK, REPAIR the circuit in question. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
G2 CHECK THE RFA MODULE GROUND CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the RFA module, circuit GD145 (BK/BU), harness side and ground. Disconnect: RFA module (Natural Hardshell). Measure the resistance between the RFA module, circuit GD145 (BK/BU), harness side and ground; and RFA module, circuit GD145 (BK/BU) harness side and ground. Are the resistances less than 5 ohms? Yes: Go to G3 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
G3 CHECK THE HS-CAN CIRCUITS BETWEEN THE RFA MODULE AND THE DLC FOR AN OPEN Measure the resistance between the RFA module, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the RFA module, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: Go to G4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
G4 CHECK THE MS-CAN CIRCUITS BETWEEN THE RFA MODULE AND THE DLC FOR AN OPEN Measure the resistance between the RFA module, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the RFA module, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to G5 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
G5 CHECK FOR CORRECT RFA MODULE OPERATION Disconnect the RFA module connector. Check for: corrosion damaged pins pushed-out pins Connect the RFA 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 RFA module. Refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-382389) . 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. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST H: The Front Control/Display Interface Module (FCDIM) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Audio System/Navigation.

PINPOINT TEST H: THE FCDIM DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 38

Scheme 38: PINPOINT TEST H: THE FCDIM DOES NOT RESPOND TO THE SCAN TOOL

Scheme 39

Scheme 40

Scheme 41

Scheme 42

Scheme 43

H1 CHECK THE FCDIM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: FCDIM C2123. Ignition ON. Measure the voltage between the FCDIM C2123-1, circuit SBP07 (WH/RD), harness side and ground. Are the voltages greater than 10 volts? Yes: Go to H2 . No: VERIFY the Central Junction Box (CJB) fuse 7 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
H2 CHECK THE FCDIM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the FCDIM C2123-7, circuit GD115 (BK/GY), harness side and ground. Is the resistance less than 5 ohms? Yes: Go to H3 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
H3 CHECK THE MS-CAN CIRCUITS BETWEEN THE FCDIM AND THE DLC FOR AN OPEN Measure the resistance between the FCDIM C2123-2, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the FCDIM C2123-3, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: Go to H4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
H4 CHECK THE ICAN CIRCUITS BETWEEN THE FCDIM AND THE DLC FOR AN OPEN Measure the resistance between the FCDIM C2123-4, circuit VDB06 (GY/OG), harness side and the DLC C251-1, circuit VDB06 (GY/OG), harness side. Measure the resistance between the FCDIM C2123-5, circuit VDB07 (VT/OG), harness side and the DLC C251-9, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to H5 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
H5 CHECK FOR CORRECT FCDIM OPERATION Disconnect the FCDIM connector. Check for: corrosion damaged pins pushed-out pins Connect the FCDIM 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 FCDIM . Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . 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. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST I: The Power Steering Control Module (PSCM) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Power Steering Controls.

PINPOINT TEST I: THE PSCM DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 44

Scheme 44: PINPOINT TEST I: THE PSCM DOES NOT RESPOND TO THE SCAN TOOL

Scheme 45

Scheme 46

Scheme 47

Scheme 48

I1 CHECK THE PSCM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: PSCM C2368A and C2368B. Ignition ON. Measure the voltage between the PSCM C2368A-1, circuit SBF02 (YE/RD) harness side and ground. Measure the voltage between the PSCM C2368B-5, circuit CBP21 (BU/GY) harness side and ground. Is the voltage greater than 10 volts? Yes: Go to I2 . No: VERIFY the Battery Junction Box (BJB) fuse mega 2 (60A) and Central Junction Box (CJB) fuse 21 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
I2 CHECK THE PSCM GROUND CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Disconnect: PSCM C2368C. Measure the resistance between the PSCM 2368C-1, circuit GD120 (BK/GN), harness side and ground. Is the resistance less than 5 ohms? Yes: Go to I3 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
I3 CHECK THE HS-CAN CIRCUITS BETWEEN THE PSCM AND THE DLC FOR AN OPEN Measure the resistance between the PSCM C2368B-2, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the PSCM C2368B-6, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to I4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
I4 CHECK FOR CORRECT PSCM OPERATION Disconnect the PSCM connector. Check for: corrosion damaged pins pushed-out pins Connect the PSCM 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 PSCM . Refer to «POWER STEERING»(ref-382383) . 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. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST J: The Body Control Module (BCM) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Power Distribution.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

PINPOINT TEST J: THE BCM DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 49

Scheme 49: PINPOINT TEST J: THE BCM DOES NOT RESPOND TO THE SCAN TOOL

Scheme 50

Scheme 51

Scheme 52

Scheme 53

J1 CHECK THE BCM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: BCM C2280B. Ignition ON. Measure the voltage between the BCM C2280B-4, circuit CBP21 (BU/GY) harness side and ground. Is the voltage greater than 10 volts? Yes: Go to J2 . No: VERIFY the Central Junction Box (CJB) fuse 21 (10A) is OK. If OK, REPAIR the circuit. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
J2 CHECK THE BCM GROUND CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the BCM C2280B-7, circuit GD115 (BK/GY), harness side and ground; and C2280B-16, circuit GD115 (BK/GY), harness side and ground. Disconnect: BCM C2280A. Measure the resistance between the BCM C2280A-12, circuit GD133 (BK), harness side and ground; and C2280A-16, circuit GD115 (BK/BU), harness side and ground. Are the resistances less than 5 ohms? Yes: Go to J3 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
J3 CHECK THE MS-CAN CIRCUITS BETWEEN THE BCM AND THE DLC FOR AN OPEN Disconnect: BCM C2280F. Measure the resistance between the BCM C2280F-24, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the BCM C2280F-23, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to J4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
J4 CHECK FOR CORRECT BCM OPERATION Disconnect the BCM connector. Check for: corrosion damaged pins pushed-out pins Connect the BCM 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 BCM . Refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-382389) . 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. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST K: The Audio Control Module (ACM) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Audio System/Navigation.

PINPOINT TEST K: THE ACM DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 54

Scheme 54: PINPOINT TEST K: THE ACM DOES NOT RESPOND TO THE SCAN TOOL

Scheme 55

Scheme 56

Scheme 57

K1 CHECK THE ACM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: ACM C240A. Ignition ON. Measure the voltage between the ACM C240A-1, circuit SBP10 (YE/RD), harness side and ground; and between the ACM C240A-7, circuit CBP19 (BN/WH), harness side and ground. Is the voltage greater than 10 volts? Yes: Go to K2 . No: VERIFY the Central Junction Box (CJB) fuses 10 (15A) and 19 (7.5A) is OK. If OK, REPAIR the circuit in question. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
K2 CHECK THE ACM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the ACM C240A-13, circuit GD111 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes: Go to K3 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
K3 CHECK THE ICAN CIRCUITS BETWEEN THE ACM AND THE DLC FOR AN OPEN Measure the resistance between the ACM C240A-14, circuit VDB06 (GY/OG), harness side and the DLC C251-1, circuit VDB06 (GY/OG), harness side. Measure the resistance between the ACM C240A-15, circuit VDB07 (VT/OG), harness side and the DLC C251-9, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to K4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
K4 CHECK FOR CORRECT ACM OPERATION Disconnect all the ACM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the ACM 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 ACM . Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . CLEAR the DTCs. REPEAT the network test with the scan tool. TEST the system for normal operation. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST L: The Global Positioning System Module (GPSM) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Audio System/Navigation.

PINPOINT TEST L: THE GPSM DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 58

Scheme 58: PINPOINT TEST L: THE GPSM DOES NOT RESPOND TO THE SCAN TOOL

Scheme 59

Scheme 60

Scheme 61

L1 CHECK THE GPSM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: GPSM C2398. Ignition ON. Measure the voltage between the GPSM C2398-1, circuit SBP16 (VT/RD), harness side and ground. Is the voltage greater than 10 volts? Yes: Go to L2 . No: VERIFY the Central Junction Box (CJB) fuse 16 (15A) is OK. If OK, REPAIR the circuit. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
L2 CHECK THE GPSM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the GPSM C2398-6, circuit GD111 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes: Go to L3 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
L3 CHECK THE ICAN CIRCUITS BETWEEN THE GPSM AND THE DLC FOR AN OPEN Measure the resistance between the GPSM C2398-2, circuit VDB06 (GY/OG), harness side and the Data Link Connector (DLC) C251-1, circuit VDB06 (GY/OG), harness side. Measure the resistance between the GPSM C2398-3, circuit VDB07 (VT/OG), harness side and the DLC C251-9, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to L4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
L4 CHECK FOR CORRECT GPSM OPERATION Disconnect the GPSM connector. Check for: corrosion damaged pins pushed-out pins Connect the GPSM 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 GPSM . Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . 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. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST M: The Transmission Control Module (TCM) Does Not Respond To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Transmission Controls.

PINPOINT TEST M: THE TCM DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 62

Scheme 62: PINPOINT TEST M: THE TCM DOES NOT RESPOND TO THE SCAN TOOL

Scheme 63

Scheme 64

Scheme 65

M1 CHECK THE TCM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Disconnect: TCM C1750A. Ignition ON. Measure the voltage between the TCM , harness side and ground as follows: CONNECTOR-PIN REFERENCE CHART Connector-Pin Circuit C1750A-1 SBB02 (YE/RD) C1750A-2 SBB02 (YE/RD) C1750A-18 SBB27 (BU/RD) C1750A-31 CBP23 (BN/YE) Are the voltages greater than 10 volts? Yes: Go to M2 . No: VERIFY the Battery Junction Box (BJB) fuses 2 (50A), 27 (7.5A) and Central Junction Box (CJB) fuse 23 (10A) are OK. If OK, REPAIR the circuit in question. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
M2 CHECK THE TCM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the TCM , harness side and ground as follows: CONNECTOR-PIN REFERENCE CHART Connector-Pin Circuit C1750A-3 GD187 (BK/GN) C1750A-4 GD187 (BK/GN) C1750A-5 GD187 (BK/GN) C1750A-6 GD187 (BK/GN) Are the resistances less than 5 ohms? Yes: Go to M3 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
M3 CHECK THE HS-CAN CIRCUITS BETWEEN THE TCM AND THE DLC FOR AN OPEN Measure the resistance between the TCM C1750A-34, circuit VDB04 (WH/BU), harness side and the Data Link Connector (DLC) C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the TCM C1750A-35, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to M4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
M4 CHECK FOR CORRECT TCM OPERATION Disconnect both the TCM connectors. Check for: corrosion damaged pins pushed-out pins Connect the TCM 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 TCM . Refer to «AUTOMATIC SHIFTING MANUAL TRANSMISSION/TRANSAXLE»(ref-382366) . 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.

PINPOINT TEST N: The Tire Pressure Monitor (TPM)/Vehicle Security Module (VSM) Does Not Respond To The Scan Tool

Refer to for schematic and connector information on Module Communications Network.

Refer to for schematic and connector information on Tire Pressure Monitor System.

PINPOINT TEST N: THE TPM/VSM DOES NOT RESPOND TO THE SCAN TOOL

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 66

Scheme 66: PINPOINT TEST N: THE TPM/VSM DOES NOT RESPOND TO THE SCAN TOOL

Scheme 67

Scheme 68

Scheme 69

N1 CHECK THE TPM / VSM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: TPM / VSM C4321a. Ignition ON. Measure the voltage between the TPM / VSM , harness side and ground as follows: CONNECTOR-PIN REFERENCE CHART Connector-Pin Circuit C4321A-20 CBP26 (BU/WH) C4321A-23 CBP23 (BN/YE) C4321A-24 SBP12 (GN/RD) Is the voltage greater than 10 volts? Yes: Go to N2 . No: VERIFY the Central Junction Box (CJB) fuses 12 (20A), 23 (10A) and 26 (7.5A) are OK. If OK, REPAIR the circuit in question. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
N2 CHECK THE TPM / VSM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the TPM / VSM C4321A-13, circuit GD143 (BK/VT), harness side and ground; and TPM / VSM C4321A-14, circuit GD143 (BK/VT), harness side and ground. Is the resistance less than 5 ohms? Yes: Go to N3 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
N3 CHECK THE MS-CAN CIRCUITS BETWEEN THE TPM / VSM AND THE DLC FOR AN OPEN Measure the resistance between the TPM / VSM C4321B-1, circuit VDB06 (GY/OG), harness side and the Data Link Connector (DLC) C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the TPM / VSM C4321B-2, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to N4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
N4 CHECK FOR CORRECT TPM / VSM OPERATION Disconnect the TPM / VSM connector. Check for: corrosion damaged pins pushed-out pins Connect the GPSM 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 TPM / VSM . Refer to «WHEELS & TIRES»(ref-382371) . 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.

PINPOINT TEST O: No Medium Speed Controller Area Network (MS-CAN) Communication, All Modules Are Not Responding

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

PINPOINT TEST O: NO MS-CAN COMMUNICATION, ALL MODULES ARE NOT RESPONDING

Note. 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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 70

Scheme 70: PINPOINT TEST O: NO MS-CAN COMMUNICATION, ALL MODULES ARE NOT RESPONDING

Scheme 71

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Scheme 80

Scheme 81

Scheme 82

Scheme 83

O1 CHECK THE DLC PINS FOR DAMAGE Ignition OFF. Disconnect the scan tool cable from the Data Link Connector (DLC). Inspect DLC pins 3 and 11 for damage. Are DLC pins 3 and 11 OK? Yes: Go to O2 . No: REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
O2 CHECK THE MS-CAN TERMINATION RESISTANCE Disconnect: Negative Battery Cable. Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Is the resistance between 54 and 66 ohms? Yes: Go to O3 . No: Go to O5 .
O3 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and ground; and between DLC C251-11, circuit VDB07 (VT/OG), harness side and ground. Are the resistances greater than 1,000 ohms? Yes: Go to O4 . No: Go to O12 .
O4 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect the negative battery cable. Ignition ON. Measure the voltage between the DLC C251-3, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-11, circuit VDB07 (VT/OG), harness side and ground. Are the voltages greater than 6 volts? Yes: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool. No: Go to O13 .
O5 CHECK THE MS-CAN TERMINATION RESISTOR Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-11, circuit VDB07 (VT/OG), harness side. Is the resistance between 108 and 132 ohms? Yes: Go to O6 . No: Go to O9 .
O6 CHECK THE MS-CAN TERMINATION RESISTOR WITH THE BCM DISCONNECTED Disconnect: BCM C2280F (Black Hardshell). Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-11, circuit VDB07 (VT/OG), harness side. Is the resistance between 108 and 132 ohms? Yes: Go to O7 . No: Go to O8 .
O7 CHECK THE MS-CAN CIRCUITS BETWEEN THE BCM AND THE DLC FOR AN OPEN Measure the resistance between the BCM C2280F-24, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the BCM C2280F-23, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to O13 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
O8 CHECK THE MS-CAN CIRCUITS BETWEEN THE IPC AND THE DLC FOR AN OPEN Disconnect: Instrument Panel Cluster (IPC) C220. Measure the resistance between the IPC C220-23, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the IPC C220-22, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to O15 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
O9 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER Measure the resistance between DLC C251-3, circuit VDB06 (GY/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG) the harness side. Is the resistance less than 5 ohms? Yes: Go to O11 . No: Go to O10 .
O10 CHECK THE MS-CAN CIRCUITS BETWEEN THE BCM AND THE DLC FOR AN OPEN Measure the resistance between DLC C251-3, circuit VDB06 (GY/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG) the harness side. Is the resistance greater than 10,000 ohms? Yes: REPAIR the DLC or REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool. No: A capacitor internal to a module may still be draining, causing irregular resistance readings. WAIT 5 minutes. REPEAT the pinpoint test.
O11 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER NOTE: Skip to the end of this test step once the suspect module has been identified. While measuring the resistance between the DLCC251-3, circuit VDB06 (GY/OG), harness side and the DLCC251-11, circuit VDB07 (VT/OG), harness side; disconnect the following modules one at a time until the resistance is greater than 5 ohms. BCM2280F FCDIMC2123 IPCC220 RFA module C3503B (if equipped) TPM/VSMC4321B Did the resistance change to greater than 5 ohms with one of the modules disconnected? Yes: CONNECT the negative battery cable. For the BCM, go to O18 . For the FCDIM, go to O19 . For the IPC, go to O20 . For the RFAmodule, go to O21 . For the TPM/VSM, go to O22 . No: REPAIR circuits VDB06 (GY/OG) and VDB07 (VT/OG) for a short together. CLEAR the DTCs. REPEAT the network test with the scan tool.
O12 CHECK THE MS-CAN(+) AND MS-CAN(-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED NOTE: Skip to the end of this test step once the suspect module has been identified. While measure the resistance between the DLCC251-3, circuit VDB06 (GY/OG), harness side ground; and the DLCC251-11, circuit VDB07 (VT/OG), harness side and ground; disconnect the following modules one at a time until the resistance to ground is greater than 10,000 ohms. BCM2280F FCDIMC2123 IPCC220 RFAmodule (if equipped) TPM/VSMC4321B Did the resistance change to greater than 1000 ohms with one of the modules disconnected? Yes: CONNECT the negative battery cable. For the BCM, go to O18 . For the FCDIM, go to O19 . For the IPC, go to O20 . For the RFAmodule, go to O21 . For the TPM/VSM, go to O22 . No: REPAIR the suspect circuit for a short to ground. CLEAR the DTCs. REPEAT the network test with the scan tool.
O13 CHECK FOR RESTORED COMMUNICATION WITH THE IPCAND BCMDISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJBFuses 3 (7.5A), 19 (7.5) and 21 (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 O14 . No: If the vehicle is equipped with RFAmodule, INSTALL the removed fuses. Go to O15 . If the vehicle is not equipped with RFAmodule, INSTALL the removed fuses. Go to O16
O14 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE BCMDISCONNECTED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: BCMC2280F. Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CANmodules pass the network test? Yes: CONNECT the module. Go to «PINPOINT TEST J»(ref-382388-S41134499632011012300000) . No: CONNECT the module. Go to «PINPOINT TEST C»(ref-382388-S01251059802011012300000) .
O15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RFAMODULE DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJB Fuses 1 (15A), 9 (20A) and 14 (20A). 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 G»(ref-382388-S37837406622011012300000) . No: INSTALL the removed fuses. Go to O16
O16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE TPM/VSM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJBFuses 23 (10A), 26 (7.5A) and 12 (20A). 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 N»(ref-382388-S08321924562011012300000) . No: INSTALL the removed fuses. Go to O17 .
O17 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE FCDIM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJB Fuse 7 (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 H»(ref-382388-S03082916872011012300000) . No: INSTALL the removed fuse. The MS-CAN tests within specification. Verify the correct operation of the scan tool on a known good vehicle.
O18 CHECK THE BCM FOR CORRECT OPERATION Disconnect all the BCM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the BCM 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 BCM. Refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-382389) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
O19 CHECK THE FCDIM FOR CORRECT OPERATION Disconnect the FCDIM connector. Check for: corrosion damaged pins pushed-out pins Connect the FCDIM 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 FCDIM. Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
O20 CHECK THE IPC FOR CORRECT 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 «INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES»(ref-382387) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
O21 CHECK THE RFA FOR CORRECT OPERATION Disconnect all the RFA connectors. Check for: corrosion damaged pins pushed-out pins Connect all the RFA 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 RFA. Refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-382389) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
O22 CHECK THE TPM/VSM FOR CORRECT OPERATION Disconnect the TPM/VSM connector. Check for: corrosion damaged pins pushed-out pins Connect the TPM/VSM 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 TPM/VSM. Refer to Tire Pressure Monitoring System (TPMS) Module - 4-Door or Tire Pressure Monitoring System (TPMS) Module - 5-Door in «WHEELS & TIRES»(ref-382371) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.

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

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Module Communications Network.

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information on Electronic Engine Controls.

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

Note. 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.

Note. Use to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 84

Scheme 84: PINPOINT TEST P: NO HS-CAN COMMUNICATION, ALL MODULES ARE NOT RESPONDING

Scheme 85

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Scheme 96

Scheme 97

P1 CHECK THE DLC PINS FOR DAMAGE Ignition OFF. Disconnect the scan tool cable from the Data Link Connector (DLC). Inspect DLC pins 6 and 14 for damage. Are DLC pins 6 and 14 OK? Yes: Go to P2 . No: REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
P2 CHECK THE HS-CAN TERMINATION RESISTANCE Disconnect: Negative Battery Cable. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Is the resistance between 54 and 66 ohms? Yes: Go to P3 . No: Go to P5 .
P3 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND 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: Go to P4 . No: Go to P12 .
P4 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect the negative battery cable. Ignition ON. Measure the voltage 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 voltages greater than 6 volts? Yes: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool. No: Go to P13 .
P5 CHECK THE HS-CAN TERMINATION RESISTOR Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Is the resistance between 108 and 132 ohms? Yes: Go to P6 . No: Go to P9 .
P6 CHECK THE HS-CAN TERMINATION RESISTOR WITH THE PCM DISCONNECTED Disconnect: PCM C175B. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Is the resistance between 108 and 132 ohms? Yes: Go to P7 . No: Go to P8 .
P7 CHECK THE HS-CAN CIRCUITS BETWEEN THE PCM AND THE DLC FOR AN OPEN Measure the resistance between the PCM C175B-20, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the PCM C175B-19, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to P27 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
P8 CHECK THE HS-CAN CIRCUITS BETWEEN THE IPC AND THE DLC FOR AN OPEN Disconnect: Instrument Panel Cluster (IPC) C220. Measure the resistance between the IPC C220-18, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the IPC C220-17, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to P24 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
P9 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Is the resistance less than 5 ohms? Yes: Go to P11 . No: Go to P10 .
P10 CHECK THE HS-CAN CIRCUITS BETWEEN THE PCM AND THE DLC FOR AN OPEN Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Is the resistance greater than 10,000 ohms? Yes: REPAIR the DLC or the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool. No: A capacitor internal to a module may still be draining, causing irregular resistance readings. WAIT 5 minutes. REPEAT the pinpoint test.
P11 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER NOTE: Skip to the end of this test step once the suspect module has been identified. While measuring the resistance between the DLCC251-6, circuit VDB04 (WH/BU), harness side and the DLCC251-14, circuit VDB05 (WH), harness side; disconnect the following modules one at a time until the resistance is greater than 5 ohms. APIMC2383 (if equipped) ABS module C135 IPCC220 OCSMC3159 PSCMC2368 PCM C175B RCMC310B RFAmodule (if equipped) TCMC1750A (if equipped) Did the resistance change to greater than 5 ohms with one of the modules disconnected? Yes: CONNECT the negative battery cable. For the APIM, go to P22 . For the ABS module, go to P23 . For the IPC, go to P24 . For the OCSM, go to P25 . For the PSCM, go to P26 . For the PCM, go to P27 . For the RCM, go to P28 . For the RFA, go to P29 . For the TCM, go to P30 . No: REPAIR circuits VDB04 (WH/BU) and VDB05 (WH) for being shorted together. CLEAR the DTCs. REPEAT the network test with the scan tool.
P12 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED NOTE: Skip to the end of this test step once the suspect module has been identified. While measuring the resistance between the DLCC251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLCC251-14, circuit VDB05 (WH), harness side and ground; disconnect the following modules one at a time until the resistance to ground is greater than 1000 ohms. APIMC2383 (if equipped) ABS module C135 IPCC220 OCSMC3159 PSCMC2368 PCM C175B RCMC310B RFAmodule (if equipped) TCMC1750A (if equipped) Did the resistance change to greater than 1000 ohms with one of the modules disconnected? Yes: CONNECT the negative battery cable. For the APIM, go to P22 . For the ABS module, go to P23 . For the IPC, go to P24 . For the OCSM, go to P25 . For the PSCM, go to P26 . For the PCM, go to P27 . For the RCM, go to P28 . For the RFA, go to P29 . For the TCM, go to P30 . No: REPAIR the suspect circuit for a short to ground. CLEAR the DTCs. REPEAT the network test with the scan tool.
P13 CHECK FOR RESTORED COMMUNICATION WITH THE PCM AND ABS MODULE DISABLED NOTE: Establish an Integrated Diagnostic System (IDS) session prior to disabling the PCM in this test step. If the PCM has failed communication during multiple attempts to identify the vehicle, first manually identify the vehicle by entering a PCM part number, calibration number or tear tag when prompted by IDS. NOTE: When a vehicle is manually identified by a PCM part number, calibration number or tear tag, the IDS will not automatically run a network test. The network test must be manually selected and run. NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: Battery Junction Box (BJB) Fuses 1 (40A), 9 (20A), 16 (15A), 27 (7.5A) and CJB Fuse 22 (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 fuses. Go to P14 . No: INSTALL the removed fuses. Go to P15 .
P14 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ABS MODULE DISCONNECTED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: ABS module C135. Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other HS-CAN modules pass the network test? Yes: CONNECT the module. Go to «PINPOINT TEST B»(ref-382388-S30555952612011012300000) . No: CONNECT the module. Go to «PINPOINT TEST A»(ref-382388-S25885272082011012300000) .
P15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PSCM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJB Fuse 21 (10A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other HS-CAN modules pass the network test? Yes: INSTALL the removed fuse. Go to «PINPOINT TEST I»(ref-382388-S25936830452011012300000) . No: If the vehicle is equipped with RFAmodule, INSTALL the removed fuse. Go to P16 . If the vehicle is not equipped with RFAmodule, INSTALL the removed fuse. Go to P17
P16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RFAMODULE DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJBFuses 1 (15A), 9 (20A) and 14 (20A). 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 G»(ref-382388-S37837406622011012300000) . No: Go to P17
P17 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RCM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJB Fuse 20 (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»(ref-382388-S31106737182011012300000) . No: If the vehicle is equipped with an APIM, INSTALL the removed fuse. Go to P18 . If the vehicle is not equipped with an APIM, INSTALL the removed fuse. Go to P19 .
P18 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE APIM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJB Fuse 10 (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 F»(ref-382388-S27245329772011012300000) . No: INSTALL the removed fuse. Go to P19 .
P19 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE IPC DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJBFuses 3 (7.5A), 19 (7.5A) and 21 (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 C»(ref-382388-S01251059802011012300000) . No: If the vehicle is equipped with an automatic transmission, INSTALL the removed fuses. Go to P20 . If the vehicle is not equipped with an automatic transmission, INSTALL the removed fuses. Go to P21
P20 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE TCM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: BJB Fuses 2 (50A), 27 (7.5A) and CJB Fuse 23 (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 M»(ref-382388-S42867000182011012300000) . No: INSTALL the removed fuses. Go to P21 .
P21 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE OCSM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJB Fuse 4 (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 D»(ref-382388-S41523482012011012300000) . No: INSTALL the removed fuse. The HS-CAN tests within specification. Verify the correct operation of the scan tool on a known good vehicle.
P22 CHECK THE APIM FOR CORRECT OPERATION Disconnect the APIM connector. Check for: corrosion damaged pins pushed-out pins Connect the APIM 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 APIM. Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
P23 CHECK THE ABS MODULE FOR CORRECT 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 «MULTIFUNCTION ELECTRONIC MODULES»(ref-382389) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
P24 CHECK THE IPC FOR CORRECT 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 «INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES»(ref-382387) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
P25 CHECK THE OCSM FOR CORRECT OPERATION Disconnect the OCSM connector. Check for: corrosion damaged pins pushed-out pins Connect the OCSM 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 OCSM. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
P26 CHECK THE PSCM FOR CORRECT OPERATION Disconnect the PSCM connector. Check for: corrosion damaged pins pushed-out pins Connect the PSCM 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 PSCM. Refer to «STEERING COLUMN»(ref-382405) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
P27 CHECK THE PCM FOR CORRECT 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 «ELECTRONIC ENGINE CONTROLS»(ref-382403) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
P28 CHECK THE RCM FOR CORRECT 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. Operate the system and verify the concern is still present. Is the concern still present? Yes: INSTALL a new RCM. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-382402) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
P29 CHECK THE RFAMODULE FOR CORRECT OPERATION Disconnect all the RFAmodule connectors. Check for: corrosion damaged pins pushed-out pins Connect all the RFAmodule 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 RFAmodule. Refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-382389) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
P30 CHECK THE TCM FOR CORRECT OPERATION Disconnect all the TCM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the TCM 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 TCM. Refer to «AUTOMATIC SHIFTING MANUAL TRANSMISSION/TRANSAXLE»(ref-382366) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.

Pinpoint Test Q: No Infotainment Controller Area Network (ICAN) Communication, All Modules Are Not Responding

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

PINPOINT TEST Q: NO ICAN COMMUNICATION, ALL MODULES ARE NOT RESPONDING

Note. 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.

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

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Scheme 98: PINPOINT TEST Q: NO ICAN COMMUNICATION, ALL MODULES ARE NOT RESPONDING

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Q1 CHECK THE DLC PINS FOR DAMAGE Ignition OFF. Disconnect the scan tool cable from the Data Link Connector (DLC). Inspect DLC pins 1 and 9 for damage. Are DLC pins 1 and 9 OK? Yes: Go to Q2 . No: REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
Q2 CHECK THE ICAN TERMINATION RESISTANCE Disconnect: Negative Battery Cable. Measure the resistance between the DLC C251-1, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-9, circuit VDB07 (VT/OG), harness side. Is the resistance between 54 and 66 ohms? Yes: Go to Q3 . No: Go to Q5 .
Q3 CHECK THE ICAN (+) AND ICAN (-) CIRCUITS FOR A SHORT TO GROUND Measure the resistance between the DLC C251-1, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-9, circuit VDB07 (VT/OG), harness side and ground. Are the resistances greater than 1,000 ohms? Yes: Go to Q4 . No: Go to Q12 .
Q4 CHECK THE ICAN (+) AND ICAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect the negative battery cable. Ignition ON. Measure the voltage between the DLC C251-1, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-9, circuit VDB07 (VT/OG), harness side and ground. Are the voltages greater than 6 volts? Yes: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool. No: Go to Q13 .
Q5 CHECK THE ICAN TERMINATION RESISTOR Measure the resistance between the DLC C251-1, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-9, circuit VDB07 (VT/OG), harness side. Is the resistance between 108 and 132 ohms? Yes: Go to Q6 . No: Go to Q9 .
Q6 CHECK THE ICAN TERMINATION RESISTOR WITH THE ACM DISCONNECTED Disconnect: ACM C240A. Measure the resistance between the DLC C251-1, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-9, circuit VDB07 (VT/OG), harness side. Is the resistance between 108 and 132 ohms? Yes: Go to Q7 . No: Go to Q8 .
Q7 CHECK THE ICAN CIRCUITS BETWEEN THE ACM AND THE DLC FOR AN OPEN Measure the resistance between the ACM C240A-14, circuit VDB06 (GY/OG), harness side and the DLC C251-1, circuit VDB06 (GY/OG), harness side. Measure the resistance between the ACM C240A-15, circuit VDB07 (VT/OG), harness side and the DLC C251-9, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to Q14 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
Q8 CHECK THE ICAN CIRCUITS BETWEEN THE FCDIM AND THE DLC FOR AN OPEN Disconnect: Front Control/Display Interface Module (FCDIM) C2123. Measure the resistance between the FCDIM C2123-4, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the FCDIM C2123-5, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? Yes: CONNECT the negative battery cable. Go to Q15 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
Q9 CHECK THE ICAN (+) AND ICAN (-) CIRCUITS FOR A SHORT TOGETHER Measure the resistance between the DLC C251-1, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-9, circuit VDB07 (VT/OG), the harness side. Is the resistance less than 5 ohms? Yes: Go to Q11 . No: Go to Q10 .
Q10 CHECK THE ICAN CIRCUITS BETWEEN THE ACM AND THE DLC FOR AN OPEN Measure the resistance between the DLC C251-1, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-9, circuit VDB07 (VT/OG), the harness side. Is the resistance greater than 10,000 ohms? Yes: REPAIR the DLC or the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool. No: A capacitor internal to a module may still be draining, causing irregular resistance readings. WAIT 5 minutes. REPEAT the pinpoint test.
Q11 CHECK THE ICAN (+) AND ICAN (-) CIRCUITS FOR A SHORT TOGETHER NOTE: Skip to the end of this test step once the suspect module has been identified. While measuring the resistance between the DLCC251-3, circuit VDB06 (GY/OG), harness side and the DLCC251-11, circuit VDB07 (VT/OG), harness side; disconnect the following modules one at a time until the resistance is greater than 5 ohms. APIMC2383 (if equipped) ACMC240A FCDIMC2123 GPSMC2398 (if equipped) Did the resistance change to greater than 5 ohms with one of the modules disconnected? Yes: CONNECT the negative battery cable. For the APIM, go to Q17 . For the ACM, go to Q18 . For the FCDIM, go to Q19 . For the GPSM, go to Q20 . No: REPAIR the circuits VDB06 (GY/OG) and VDB07 (VT/OG) for a short together. CLEAR the DTCs. REPEAT the network test with the scan tool.
Q12 CHECK THE ICAN (+) AND ICAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED NOTE: Skip to the end of this test step once the suspect module has been identified. While measuring the resistance between the DLCC251-1, circuit VDB06 (GY/OG), harness side ground; and the DLCC251-9, circuit VDB07 (VT/OG), harness side and ground; disconnect the following modules one at a time until the resistance to ground is greater than 1000 ohms. APIMC2383 (if equipped) ACMC240A FCDIMC2123 GPSMC2398 (if equipped) Did the resistance change to greater than 1000 ohms with one of the modules disconnected? Yes: CONNECT the negative battery cable. For the APIM, go to Q17 . For the ACM, go to Q18 . For the FCDIM, go to Q19 . For the GPSM, go to Q20 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
Q13 CHECK FOR RESTORED COMMUNICATION WITH THE FCD IM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJB Fuse 7 (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 H»(ref-382388-S03082916872011012300000) . No: If the vehicle is equipped with a GPSM, INSTALL the removed fuse. Go to Q14 . If the vehicle is not equipped with a GPSM, INSTALL the removed fuse. Go to Q15
Q14 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE GPSM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJB Fuse 16 (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 L»(ref-382388-S25391415182011012300000) . No: INSTALL the removed fuse. Go to Q15
Q15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ACM AND APIM DISABLED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect: CJBFuses 19 (7.5A) and 10 (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 fuses. If the vehicle is equipped with an APIM, go to Q16 . If the vehicle is not equipped with an APIM, go to «PINPOINT TEST K»(ref-382388-S08769437822011012300000) . No: INSTALL the removed fuses. The ICAN tests within specification. Verify the correct operation of the scan tool on a known good vehicle.
Q16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE APIM DISCONNECTED NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the previously run network test results. Disconnect modules one at a time until other HS-CAN modules pass the network test. Skip to the end once network operation is restored. Disconnect: The APIMC2383. 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 module. Go to «PINPOINT TEST F»(ref-382388-S27245329772011012300000) . No: CONNECT the module. Go to «PINPOINT TEST K»(ref-382388-S08769437822011012300000) .
Q17 CHECK THE APIM FOR CORRECT OPERATION Disconnect the APIM connector. Check for: corrosion damaged pins pushed-out pins Connect the APIM 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 APIM. Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
Q18 CHECK THE ACM FOR CORRECT OPERATION Disconnect all the ACM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the ACM 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 ACM. Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
Q19 CHECK THE FCDIM FOR CORRECT OPERATION Disconnect the FCDIM connectors. Check for: corrosion damaged pins pushed-out pins Connect the FCDIM 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 FCDIM. Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.
Q20 CHECK THE GPSM FOR CORRECT OPERATION Disconnect the GPSM connector. Check for: corrosion damaged pins pushed-out pins Connect the GPSM 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 GPSM. Refer to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-382429) . CLEAR the DTCs. CONNECT all modules. 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. CLEAR the DTCs. CONNECT all modules. REPEAT the network test with the scan tool.

Pinpoint Test R: No Power To The Scan Tool

Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

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

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 112

Scheme 112: PINPOINT TEST R: NO POWER TO THE SCAN TOOL

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R1 CHECK THE DLC PINS FOR DAMAGE Ignition OFF. Disconnect the scan tool cable from the DLC . Inspect DLC pins 4, 5 and 16 for damage. Are DLC pins 4, 5 and 16 OK? Yes: Go to R2 . No: REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
R2 CHECK THE DLC VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Measure the voltage between the DLC C251-16, circuit SBP05 (GY/RD), harness side and ground. Is the voltage greater than 10 volts? Yes: Go to R3 . No: VERIFY the Central Junction Box (CJB) fuse 5 (15A) is OK. If OK, REPAIR the circuit. If not OK, refer to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. REPEAT the network test with the scan tool.
R3 CHECK THE DLC GROUND CIRCUITS FOR AN OPEN Disconnect: Negative Battery Cable. Measure the resistance between the DLC C251-4, circuit GD115 (BK/GY), harness side and ground; and between the DLC C251-5, circuit GD115 (BK/GY), harness side and ground. Are the resistances less than 5 ohms? Yes: REPAIR the scan tool. CONNECT the negative battery cable. REPEAT the network test with the scan tool. No: REPAIR the circuit in question. REPEAT the network test with the scan tool.

Module Communications Network: Diagnosis Ford Fiesta Mk6

Inspection and Verification

DTC Charts

Communication Network DTC Chart

Symptom Chart

Pinpoint Test A: The PCM Does Not Respond To The Scan Tool

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Pinpoint Test B: The ABS Module Does Not Respond To The Scan Tool

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Pinpoint Test C: The Instrument Panel Cluster (IPC) Does Not Respond To The Scan Tool

PINPOINT TEST C: THE IPC DOES NOT RESPOND TO THE SCAN TOOL

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Pinpoint Test D: The Occupant Classification System Module (OCSM) Does Not Respond To The Scan Tool

PINPOINT TEST D: THE OCSM DOES NOT RESPOND TO THE SCAN TOOL

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Pinpoint Test E: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool

PINPOINT TEST E: THE RCM DOES NOT RESPOND TO THE SCAN TOOL

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PINPOINT TEST F: The Accessory Protocol Interface Module (APIM) Does Not Respond To The Scan Tool

PINPOINT TEST F: THE APIM DOES NOT RESPOND TO THE SCAN TOOL

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PINPOINT TEST G: The Remote Function Actuator (RFA) Module Does Not Respond To The Scan Tool

PINPOINT TEST G: THE RFA MODULE DOES NOT RESPOND TO THE SCAN TOOL

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PINPOINT TEST H: The Front Control/Display Interface Module (FCDIM) Does Not Respond To The Scan Tool

PINPOINT TEST H: THE FCDIM DOES NOT RESPOND TO THE SCAN TOOL

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PINPOINT TEST I: The Power Steering Control Module (PSCM) Does Not Respond To The Scan Tool

PINPOINT TEST I: THE PSCM DOES NOT RESPOND TO THE SCAN TOOL

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PINPOINT TEST J: The Body Control Module (BCM) Does Not Respond To The Scan Tool

PINPOINT TEST J: THE BCM DOES NOT RESPOND TO THE SCAN TOOL

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PINPOINT TEST K: The Audio Control Module (ACM) Does Not Respond To The Scan Tool

PINPOINT TEST K: THE ACM DOES NOT RESPOND TO THE SCAN TOOL

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