Module Communications Network: Diagnosis Ford Taurus VI

Inspection and Verification

1. Verify the customer concern.
2. Visually inspect for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Battery Junction Box (BJB) fuse(s): 12 (20A) (no communication with the ABS module) 13 (15A) (no communication with the C-CM ) 22 (30A) (no communication with the DCSM ) 23 (7.5A) (no communication with the PCM) 32 (30A) (no communication with the DSM ) 36 (20A) (no communication with the C-CM ) 37 (10A) (no communication with the PCM) 47 (20A) (no communication with the PCM) Smart Junction Box (SJB) fuse(s): 5 (10A) (no communication with the SJB ) 11 (10A) (no communication with the 4X4 control module) 12 (7.5A) (no communication with the RFA module) 13 (5A) (no communication with the DDM ) 14 (10A) (no communication with the APIM , FDIM , GPSM , DSM ) 15 (10A) (no communication with the HVAC module) 16 (15A) (no communication with the FCIM , ILCM ) 19 (25A) (no communication with the audio DSP module) 20 (15A) (no power to scan tool) 26 (10A) (no communication with the HUD module, IPC ) 27 (20A) (no communication with the RFA module) 29 (5A) (no communication with the HUD module, IPC ) 32 (10A) (no communication with the RCM ) 34 (5A) (no communication with the ABS module, PSCM ) 35 (10A) (no communication with the 4X4 control module, PAM , SOD-L , SOD-R ) 39 (20A) (no communication with the ACM ) 43 (10A) (no communication with the HCM-2 ) 46 (7.5A) (no communication with the OCSM ) Data Link Connector (DLC) Wiring harness Wiring, terminals or connectors
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. NOTE: Make sure to use the latest scan tool software release. If the cause is not visually evident, connect the scan tool to the DLC . NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM . If the scan tool 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 AE: NO POWER TO THE SCAN TOOL»(ref-355713-S26992606182010012800000) , to diagnose no power to the scan tool.
5. 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-355713-S06587845332010012800000) to identify the module not communicating.
6. If the DTCs retrieved are related to the concern, go to «DTC CHARTS»(ref-355713-S31594964452010012800000) . For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) .
7. If no DTCs related to the concern are retrieved, GO to «SYMPTOM CHART»(ref-355713-S06587845332010012800000) .

DTC Charts

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

Note. Refer to DESCRIPTION AND OPERATION , Intelligent Access (IA) with Push Button Start in ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) to review the procedures for achieving the various ignition states (ignition off, ignition in accessory, ignition on, ignition start) on vehicles with this feature.

Communication Network DTC Chart

Note. This module utilizes a 5-character DTC followed by a 2-character failure-type code. The failure-type code provides information about specific fault conditions such as opens, or shorts to ground. Continuous memory DTCs have an additional 2- character DTC status code suffix to assist in determining DTC history.

COMMUNICATION NETWORK DTC CHART

Symptom Chart

Note. Refer to DESCRIPTION AND OPERATION , Intelligent Access (IA) with Push Button Start in ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) to review the procedures for achieving the various ignition states (ignition off, ignition in accessory, ignition on, ignition start) on vehicles with this feature.

SYMPTOM CHART

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

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Electronic Engine Controls - 3.5L IVCT, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Electronic Engine Controls - 3.5L GTDI, for schematic and connector information.

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 .

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

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1. A1 VERIFY WHETHER OTHER HS-CAN MODULES PASS THE NETWORK TEST Enter the following diagnostic mode on the scan tool: Network Test. In the LH pane of the Integrated Diagnostic System (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): 4X4 control module, ABS module, APIM, C-CM, HUD module, IPC, OCSM, PAM, PCM, PSCM, RFA module or RCM? Yes : If "pass" or a DTC was listed next to the PCM, a network fault is not currently present. Go To «PINPOINT TEST AE: NO POWER TO THE SCAN TOOL»(ref-355713-S26992606182010012800000) 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 Test A2. No : No modules are currently communicating on the HS-CAN. Go To «PINPOINT TEST AD: NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S33232701102010012800000) to diagnose no HS-CAN communication.
2. A2 PC/ED PINPOINT TEST QA VERIFICATION Verify that Powertrain Control/Emissions Diagnosis (PC/ED) pinpoint test QA has been carried out. Has pinpoint test QA been carried out? Yes : GO to Test A3. No : REFER to the «INTRODUCTION - GASOLINE MODELS»(ref-355661) , group 5, pinpoint test QA to diagnose no communication with the PCM.
3. A3 CHECK THE HS-CAN TERMINATION RESISTANCE Ignition OFF. Disconnect: Negative Battery Cable. Disconnect the scan tool from the 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 : GO to A6 . No : For 3.5L engine, GO to A4. For 3.5L GTDI engine, GO to A5 .
4. A4 CHECK THE HS-CAN CIRCUITS BETWEEN THE PCM AND THE DLC FOR AN OPEN - 3.5L Disconnect: PCM C175b. Measure the resistance between the PCM C175b-2, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the PCM C175b-3, 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 A6 . No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. A5 CHECK THE HS-CAN CIRCUITS BETWEEN THE PCM AND THE DLC FOR AN OPEN - 3.5L GTDI Disconnect: PCM C1381b. Measure the resistance between the PCM C1381b-59, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the PCM C1381b-58, 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 Test A6. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
6. A6 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-355744) . 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 B: The ABS Module Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Vehicle Dynamic Systems, for schematic and connector information.

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 .

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1. B1 CHECK THE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: ABS Module C135. Ignition ON. Measure the voltage between the ABS module C135-25, circuit SBB12 (GN/RD), harness side and ground; and between the ABS module C135-35, circuit CBP34 (VT/BN), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B2 CHECK THE GROUND CIRCUIT FOR AN OPEN . No : VERIFY the Battery Junction Box (BJB) fuse 12 (20A) or Smart Junction Box (SJB) fuse 34 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. B2 CHECK THE GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the ABS module C135-38, circuit GD120 (BK/GN), harness side and ground. Is the resistance less than 5 ohms? Yes : CONNECT the negative battery cable. GO to Test B3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. B3 CHECK THE HS-CAN CIRCUITS BETWEEN THE DLC AND THE ABS MODULE FOR AN OPEN Measure the resistance between the ABS module C135-26, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the ABS module C135-14, 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 Test B4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. 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-355728) . 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 C: The Instrument Panel Cluster (IPC) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Instrument Cluster, for schematic and connector information.

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 BATTERY, MOUNTING AND CABLES .

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1. 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 1828 (PK/LG), harness side. Is the resistance between 54 and 66 ohms? Yes : GO to C3 . No : GO to Test C2.
2. C2 CHECK THE HS-CAN CIRCUITS BETWEEN THE IPC AND THE DLC FOR AN OPEN Disconnect: IPC C220. Measure the resistance between the IPC C220-25, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the IPC C220-26, 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 C7 . No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. C3 CHECK THE MS-CAN TERMINATION RESISTANCE 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 C5 . No : GO to Test C4.
4. C4 CHECK THE MS-CAN CIRCUITS BETWEEN THE IPC AND THE DLC FOR AN OPEN Measure the resistance between the IPC C220-12, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the IPC C220-13, 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 C7 . No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. C5 CHECK THE IPC GROUND CIRCUIT FOR AN OPEN Measure the resistance between the IPC C220-5, circuit GD114 (BK/BU) harness side and ground. Is the resistance less than 5 ohms? Yes : CONNECT the negative battery cable. GO to Test C6. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
6. C6 CHECK THE IPC VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Disconnect: IPC C220. Ignition ON. Measure the voltage between the IPC C220-20, circuit CBP29 (WH/VT), harness side and ground; and between the IPC C220-21, circuit SBP26 (YE/RD), harness side and ground. Are the voltages greater than 10 volts? Yes : GO to Test C7. No : VERIFY Smart Junction Box (SJB) fuse 26 (10A) or fuse 29 (5A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to IDENTIFY the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
7. C7 CHECK FOR CORRECT IPC OPERATION Disconnect the IPC connector. Check for: corrosion damaged pins pushed-out pins Connect the IPC connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new IPC. REFER to «INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES»(ref-355718) . 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 Power Steering Control Module (PSCM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network,for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Power Steering Controls, for schematic and connector information.

PINPOINT TEST D: 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 .

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1. D1 CHECK THE PSCM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Disconnect: PSCM C1463a. Ignition ON. Measure the voltage between the PSCM C1463a-3, circuit CBP34 (VT/BN), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to Test D2. No : VERIFY the Smart Junction Box (SJB) fuse 34 (5A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. D2 CHECK THE PSCM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: PSCM C1463b. Disconnect: Negative Battery Cable. Measure the resistance between the PSCM C1463b-2, circuit GD108 (BK/VT), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to Test D3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. D3 CHECK THE HS-CAN CIRCUITS BETWEEN THE PSCM AND THE DLC FOR AN OPEN Measure the resistance between the PSCM C1463a-1, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the PSCM C1463a-2, 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. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. D4 CHECK FOR CORRECT PSCM OPERATION Disconnect all the PSCM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the PSCM connectors and make sure they seat correctly. 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-355734) . 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 E: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network,for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Supplemental Restraint System, for schematic and connector information.

PINPOINT TEST E: THE RCM 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 .

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

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1. E1 CHECK THE RCM CONNECTION Ignition OFF. Depower the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-355738) . Disconnect: RCM C310a. Disconnect: RCM C310b. Inspect the RCM connector for damaged, pushed out or corroded pins. Are RCM C310a pin 13 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-355738) . CLEAR the DTCs. REPEAT the network test with the scan tool.
2. E2 CHECK THE RCM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Repower the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-355738) . Ignition ON. Measure the voltage between the RCM C310a-13, circuit CBP32 (GN/VT), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to E3. No : VERIFY the Smart Junction Box (SJB) fuse 32 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) o identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. E3 CHECK THE RCM CASE GROUND Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the RCM case and a good chassis ground. Is the resistance less than 5 ohms? Yes : GO to E4. No : REPAIR the RCM case ground as necessary. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. 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 Data Link Connector (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. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. 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. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-355738) . 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 F: The Occupant Classification System Module (OCSM) Does Not Communicate With the Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network,for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Supplemental Restraint System, for schematic and connector information.

PINPOINT TEST F: THE OCSM DOES NOT COMMUNICATE WITH 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 .

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1. F1 CHECK THE OCSM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: OCSM C3159. Ignition ON. Measure the voltage between the OCSM C3159-1, circuit CBX02 (BN/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to F2. No : VERIFY the Smart Junction Box (SJB) fuse 46 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) o identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. F2 CHECK THE OCSM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the OCSM C3159-14, circuit GD901 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to F3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. F3 CHECK THE HS-CAN CIRCUITS BETWEEN THE OCSM AND THE 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 F4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. F4 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. 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-355738) . 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 G: The Head Up Display (HUD) Module Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network,for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Vehicle Emergency Messaging System, for schematic and connector information.

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

Note. Use the correct probe adapter(s) when taking 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 .

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1. G1 CHECK THE HUD MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: HUD Module C2395. Ignition ON. Measure the voltage between the HUD module C2395-4, circuit CBP29 (WH/VT), harness side and ground; and between the HUD module C2395-5, circuit SBP26 (YE/RD), harness side and ground. Are the voltages greater than 10 volts? Yes : GO to G2. No : VERIFY Smart Junction Box (SJB) fuse 26 (10A) or fuse 29 (5A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. G2 CHECK THE HUD MODULE GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the HUD module C2395-1, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to G3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. G3 CHECK THE HS-CAN CIRCUITS BETWEEN THE HUD MODULE AND THE DLC FOR AN OPEN Measure the resistance between the HUD module C2395-3, 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 HUD module C2395-2, 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 G4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. G4 CHECK FOR CORRECT HUD MODULE OPERATION Disconnect the HUD module connector. Check for: corrosion damaged pins pushed-out pins Connect the HUD module connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new HUD module. REFER to «COLLISION AVOIDANCE»(ref-355737) . 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 H: The 4X4 Control Module Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , All-Wheel Drive (AWD), for schematic and connector information.

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 .

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1. H1 CHECK THE 4X4 CONTROL MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: 4X4 Control Module C281. Ignition ON. Measure the voltage between the 4X4 control module C281-4, circuit CBP35 (YE/GY), harness side and ground; and between the 4X4 control module C281-5, circuit SBP11 (BU/RD), harness side and ground. Are the voltages greater than 10 volts? Yes : GO to H2. No : VERIFY the Smart Junction Box (SJB) fuse 11 (10A) or 35 (10A) is OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. H2 CHECK THE 4X4 CONTROL MODULE GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the 4X4 control module C281-15, circuit GD145 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to H3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. H3 CHECK THE HS-CAN CIRCUITS BETWEEN THE 4X4 CONTROL MODULE AND THE DLC FOR AN OPEN Measure the resistance between the 4X4 control module C281-3, 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 4X4 control module C281-11, 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 H4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. H4 CHECK FOR CORRECT 4X4 CONTROL MODULE OPERATION Disconnect the 4X4 control module connector. Check for: corrosion damaged pins pushed-out pins Connect the 4X4 control module connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new 4X4 control module. REFER to «FOUR WHEEL DRIVE (4WD) SYSTEMS»(ref-355757) . 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 I: The Cruise-Control Module (C-CM) Does Not Communicate With the Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Cruise Control, for schematic and connector information.

PINPOINT TEST I: THE C-CM DOES NOT COMMUNICATE WITH 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 37

Scheme 38

Scheme 39

Scheme 40

1. I1 CHECK THE C-CM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: C-CM C1582. Ignition ON. Measure the voltage between the C-CM C1582-1, circuit SBB13 (GY/RD), harness side and ground; and between the C-CM C1582-10, circuit CBB36 (BU/BN), harness side and ground Is the voltage greater than 10 volts? Yes : GO to I2. No : VERIFY the Battery Junction Box (BJB) fuse 13 (15A) or fuse 36 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. I2 CHECK THE C-CM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the C-CM C1582-3, circuit GD120 (BK/GN), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to I3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. I3 CHECK THE HS-CAN CIRCUITS BETWEEN THE C-CM AND THE DLC FOR AN OPEN Measure the resistance between the C-CM C1582-8, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the C-CM C1582-7, 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. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. I4 CHECK FOR CORRECT C-CM OPERATION Disconnect the C-CM connector. Check for: corrosion damaged pins pushed-out pins Connect the C-CM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new C-CM. REFER to «CRUISE CONTROL»(ref-355760) . 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 J: The Parking Aid Module (PAM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Parking Aid, for schematic and connector information.

PINPOINT TEST J: THE PAM 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 41

Scheme 42

Scheme 43

Scheme 44

1. J1 CHECK THE PAM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: PAM C4014. Ignition ON. Measure the voltage between the PAM C4014-1, circuit CBP35 (YE/GY), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to J2. No : VERIFY the Smart Junction Box (SJB) fuse 35 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. TEST the system for normal operation.
2. J2 CHECK THE PAM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the PAM C4014-4, circuit GD149 (BK/GY), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to J3. No : REPAIR the circuit. CONNECT the negative battery cable. TEST the system for normal operation.
3. J3 CHECK THE HS-CAN CIRCUITS BETWEEN THE PAM AND THE DLC FOR AN OPEN Measure the resistance between the PAM C4014-3, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the PAM C4014-11, 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 J4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. J4 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new PAM. REFER to «PARKING AID»(ref-355764) . 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 K: The Remote Function Actuator (RFA) Module Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Power Door Locks, for schematic and connector information.

PINPOINT TEST K: 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 45

Scheme 46

Scheme 47

Scheme 48

Scheme 49

Scheme 50

1. K1 CHECK THE RFA MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: RFA Module C2153c (Blue Hardshell). Ignition ON. Measure the voltage between the RFA module C2153c-1, circuit SBP27 (BU/RD), harness side and ground; and between the RFA module C2153c-2, circuit SBP12 (GN/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to K2. No : VERIFY the Smart Junction Box (SJB) fuse 12 (7.5A) or fuse 27 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. K2 CHECK THE RFA MODULE GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the RFA module C2153c-4, circuit GD116 (BK/VT), harness side and ground; and between the RFA module C2153c-5, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to K3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. K3 CHECK THE MS-CAN CIRCUITS BETWEEN THE RFA MODULE AND THE DLC FOR AN OPEN Disconnect: RFA Module C2153d (Natural Hardshell). Measure the resistance between the RFA module C2153d-12, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the RFA module C2153d-13, 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 K4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. K4 CHECK THE HS-CAN CIRCUITS BETWEEN THE RFA MODULE AND THE DLC FOR AN OPEN Measure the resistance between the RFA module C2153d-21, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the RFA module C2153d-22, 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 K5. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. K5 CHECK FOR CORRECT RFA MODULE OPERATION Disconnect all the RFA module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the RFA module connectors and make sure they seat correctly. 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-355714) . 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 L: The Accessory Protocol Interface Module (APIM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Audio System/Navigation, for schematic and connector information.

PINPOINT TEST L: 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 51

Scheme 52

Scheme 53

Scheme 54

Scheme 55

Scheme 56

1. L1 CHECK THE APIM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Disconnect: APIM C3342. Ignition ON. Measure the voltage between the APIM C3342-1, circuit SBP14 (BN/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to L2. No : VERIFY the Smart Junction Box (SJB) fuse 14 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) , Module Communications Network, to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. L2 CHECK THE APIM GROUND CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the APIM C3342-37, circuit GD114 (BK/BU), harness side and ground; and between the APIM C3342-38, circuit GD114 (BK/BU), harness side and ground. Are the resistances less than 5 ohms? Yes : GO to L3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. L3 CHECK THE HS-CAN CIRCUITS BETWEEN THE APIM AND THE DLC FOR AN OPEN Measure the resistance between the APIM C3342-53, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the APIM C3342-54, 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 L4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. L4 CHECK THE MS-CAN CIRCUITS BETWEEN THE APIM AND THE DLC FOR AN OPEN Measure the resistance between the APIM C3342-16, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the APIM C3342-17, 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 L5. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. L5 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-355740) . 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 M: The Audio Control Module (ACM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Audio System/Navigation, for schematic and connector information.

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

Note. Use the correct probe adapter(s) when taking 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 57

Scheme 58

Scheme 59

Scheme 60

1. M1 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 SPB39 (WH/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to M2. No : VERIFY the Smart Junction Box (SJB) fuse 39 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. M2 CHECK THE ACM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the ACM C240a-13, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to M3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. M3 CHECK THE MS-CAN CIRCUITS BETWEEN THE ACM AND THE DLC FOR AN OPEN Disconnect: ACM C240c. Measure the resistance between the ACM C240c-15, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the ACM C240c-16, 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 M4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. M4 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-355740) . 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 Front Controls Interface Module (FCIM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Audio System/Navigation, for schematic and connector information.

PINPOINT TEST N: THE FCIM 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 61

Scheme 62

Scheme 63

Scheme 64

1. N1 CHECK THE FCIM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: FCIM C2402. Ignition ON. Measure the voltage between the FCIM C2402-1, circuit SBP16 (VT/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to N2. No : VERIFY the Smart Junction Box (SJB) fuse 16 (15A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. N2 CHECK THE FCIM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the FCIM C2402-4, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to N3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. N3 CHECK THE MS-CAN CIRCUITS BETWEEN THE FCIM AND THE DLC FOR AN OPEN Measure the resistance between the FCIM C2402-2, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the FCIM C2402-3, 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 : CONNECT the negative battery cable. GO to N4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. N4 CHECK FOR CORRECT FCIM OPERATION Disconnect the FCIM connector. Check for: corrosion damaged pins pushed-out pins Connect the FCIM 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 FCIM. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-355740) . 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: The Front Display Interface Module (FDIM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Audio System/Navigation, for schematic and connector information.

PINPOINT TEST O: THE FDIM 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 65

Scheme 66

Scheme 67

Scheme 68

1. O1 CHECK THE FDIM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: FDIM C2123. Ignition ON. Measure the voltage between the FDIM C2123-12, circuit SBP14 (BN/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to O2. No : VERIFY the Smart Junction Box (SJB) fuse 14 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. O2 CHECK THE FDIM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the FDIM C2123-8, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to O3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. O3 CHECK THE MS-CAN CIRCUITS BETWEEN THE FDIM AND THE DLC FOR AN OPEN Measure the resistance between the FDIM C2123-4, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the FDIM 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 O4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. O4 CHECK FOR CORRECT FDIM OPERATION Disconnect the FDIM connector. Check for: corrosion damaged pins pushed-out pins Connect the FDIM 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 FDIM. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-355740) . 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 P: The Global Positioning System Module (GPSM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Audio System/Navigation, for schematic and connector information.

PINPOINT TEST P: 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 69

Scheme 70

Scheme 71

Scheme 72

1. P1 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 SBP14 (BN/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to P2. No : VERIFY the Smart Junction Box (SJB) fuse 14 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. P2 CHECK THE GPSM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the GPSM C2398-6, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to P3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. P3 CHECK THE MS-CAN 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) C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the GPSM C2398-3, 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 : CONNECT the negative battery cable. GO to P4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. P4 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-355740) . 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 Q: The Interior Lighting Control Module (ILCM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Interior Lamps, for schematic and connector information.

PINPOINT TEST Q: THE ILCM 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 73

Scheme 74

Scheme 75

Scheme 76

1. Q1 CHECK THE ILCM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: ILCM C2392. Ignition ON. Measure the voltage between the ILCM C2392-7, circuit SBP16 (VT/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to Q2. No : VERIFY the Smart Junction Box (SJB) fuse 16 (15A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. Q2 CHECK THE ILCM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the ILCM C2392-10, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to Q3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. Q3 CHECK THE MS-CAN CIRCUITS BETWEEN THE ILCM AND THE DLC FOR AN OPEN Measure the resistance between the ILCM C2392-17, 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 ILCM C2392-18, 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 Q4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. Q4 CHECK FOR CORRECT ILCM OPERATION Disconnect the ILCM connector. Check for: corrosion damaged pins pushed-out pins Connect the ILCM 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 ILCM. REFER to «INTERIOR LIGHTING»(ref-355766) . 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 R: The Side Obstacle Detection Control Module - Left (SOD-L) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Vehicle Emergency Messaging System, for schematic and connector information.

PINPOINT TEST R: THE SOD-L 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 77

Scheme 78

Scheme 79

Scheme 80

1. R1 CHECK THE SOD-L VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: SOD-L C4369. Ignition ON. Measure the voltage between the SOD-L C4369-2, circuit CBP35 (YE/GY), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to R2. No : VERIFY the Smart Junction Box (SJB) fuse 35 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. R2 CHECK THE SOD-L GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the SOD-L C4369-5, circuit GD149 (BK/GY), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to R3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. R3 CHECK THE MS-CAN CIRCUITS BETWEEN THE SOD-L AND THE DLC FOR AN OPEN Measure the resistance between the SOD-L C4369-3, 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 SOD-L C4369-4, 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 R4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. R4 CHECK FOR CORRECT SOD-L OPERATION Disconnect the SOD-L connector. Check for: corrosion damaged pins pushed-out pins Connect the SOD-L 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 SOD-L. REFER to «SIDE AND REAR VISION»(ref-355765) . 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 S: The Side Obstacle Detection Control Module - Right (SOD-R) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Vehicle Emergency Messaging System, for schematic and connector information.

PINPOINT TEST S: THE SOD-R 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 .

1. S1 CHECK THE SOD-R VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: SOD-R C4370. Ignition ON. Measure the voltage between the SOD-R C4370-2, circuit CBP35 (YE/GY), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to S2. No : VERIFY the Smart Junction Box (SJB) fuse 35 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. S2 CHECK THE SOD-R GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the SOD-R C4370-5, circuit GD148 (BK/YE), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to S3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. S3 CHECK THE MS-CAN CIRCUITS BETWEEN THE SOD-R AND THE DLC FOR AN OPEN Measure the resistance between the SOD-R C4370-3, 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 SOD-R C4370-4, 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 S4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. S4 CHECK FOR CORRECT SOD-R OPERATION Disconnect the SOD-R connector. Check for: corrosion damaged pins pushed-out pins Connect the SOD-R 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 SOD-R. REFER to «SIDE AND REAR VISION»(ref-355765) . 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 T: The Driver Seat Module (DSM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Memory Seats, for schematic and connector information.

PINPOINT TEST T: THE DSM 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 81

Scheme 82

Scheme 83

Scheme 84

Scheme 85

Scheme 86

1. T1 CHECK THE DSM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: DSM C341a. Disconnect: DSM C341b. Ignition ON. Measure the voltage between the DSM C341a-1, circuit CBX05 (VT/RD), harness side and ground. Measure the voltage between the DSM C341b-1, circuit CBX03 (BU/RD), harness side and ground. Are the voltages greater than 10 volts? Yes : GO to T2. No : VERIFY the Battery Junction Box (BJB) fuse 32 (30A) or the Smart Junction Box (SJB) fuse 14 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. T2 CHECK THE DSM GROUND CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the DSM C341a-2, circuit GD906 (BK/GY), harness side and ground. Measure the resistance between the DSM C341b-24, circuit GD905 (BK/GN), harness side and ground. Are the resistances less than 5 ohms? Yes : GO to T3. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. T3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DSM AND THE DLC FOR AN OPEN Disconnect: DSM C341d. Measure the resistance between the DSM C341d-10, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the DSM C341d-9, 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 T4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. T4 CHECK FOR CORRECT DSM OPERATION Disconnect all the DSM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the DSM 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 DSM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . 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 U: The Smart Junction Box (SJB) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Power Distribution/SJB, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

PINPOINT TEST U: THE SJB 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 87

Scheme 88

Scheme 89

Scheme 90

1. U1 CHECK THE SJB VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition ON. NOTE: Measurements are taken with the fuses installed. Measure the voltage between the SJB fuse 5 (10A) and ground. Is the voltage greater than 10 volts? Yes : GO to U2. No : VERIFY the SJB fuse 5 (10A) is OK. If OK, GO to U4 . If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short.
2. U2 CHECK THE SJB GROUND CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Disconnect: SJB C2280d. Measure the resistance between the SJB C2280d-8, circuit GD133 (BK), harness side and ground; and between the SJB C2280d-12, circuit GD133 (BK), harness side and ground. Are the resistances less than 5 ohms? Yes : GO to U3. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. U3 CHECK THE MS-CAN CIRCUITS BETWEEN THE SJB AND THE DLC FOR AN OPEN Disconnect: SJB C2280b. Measure the resistance between the SJB C2280b-37, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the SJB C2280b-38, 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 U4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. U4 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB 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 SJB. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . 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 V: The HVAC Module Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , information Climate Control System, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Automatic Climate Control System, for schematic and connector information.

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 91

Scheme 92

Scheme 93

Scheme 94

1. V1 CHECK THE HVAC VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: HVAC Module C2357 (Manual A/C). Disconnect: HVAC Module C228a (Dual Automatic Temperature Control (DATC)). Ignition ON. Measure the voltage between the HVAC module C2357-1 (manual) or C228a-1 (DATC), circuit SBP15 (WH/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to V2. No : VERIFY the Smart Junction Box (SJB) fuse 15 (10A) is OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short.
2. V2 CHECK THE HVAC GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the HVAC module C2357-17 (manual) or C228a-17 (DATC), circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to V3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. V3 CHECK THE MS-CAN CIRCUITS BETWEEN THE HVAC MODULE AND THE DLC FOR AN OPEN Measure the resistance between the HVAC module C2357-15 (manual) or C228a-15 (DATC), harness side and the Data Link Connector (DLC) C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the HVAC module C2357-14 (manual) or C228a-14 (DATC), 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 V4. No : REPAIR the circuit as necessary. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. V4 CHECK FOR CORRECT HVAC MODULE OPERATION Disconnect all the HVAC module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the HVAC module 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 HVAC module. REFER to «CLIMATE CONTROL»(ref-355756) . 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 W: The Audio Digital Signal Processing (DSP) Module Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Audio System/Navigation, for schematic and connector information.

PINPOINT TEST W: THE AUDIO DSP 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 95

Scheme 96

Scheme 97

Scheme 98

1. W1 CHECK THE AUDIO DSP MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: Audio DSP Module C4326c. Ignition ON. Measure the voltage between the audio DSP module C4326c-5, circuit SBP19 (BU/RD), harness side and ground; and between the audio DSP module C4326c-6, circuit SBP19 (BU/RD), harness side and ground. Are the voltages greater than 10 volts? Yes : GO to W2. No : VERIFY the Smart Junction Box (SJB) fuse 19 (25A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. W2 CHECK THE AUDIO DSP MODULE GROUND CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the audio DSP module C4326c-13, circuit GD149 (BK/GY), harness side and ground; and between the audio DSP module C4326c-14, circuit GD149 (BK/GY), harness side and ground. Are the resistances less than 5 ohms? Yes : GO to W3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. W3 CHECK THE MS-CAN CIRCUITS BETWEEN THE AUDIO DSP MODULE AND THE DLC FOR AN OPEN Disconnect: Audio DSP Module C4326a. Measure the resistance between the audio DSP module C4326a-11, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the audio DSP module C4326a-1, 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 W4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. W4 CHECK FOR CORRECT AUDIO DSP MODULE OPERATION Disconnect all the audio DSP module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the audio DSP module 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 audio DSP module. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-355740) . 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 X: The Driver Door Module (DDM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Power Mirrors, for schematic and connector information.

PINPOINT TEST X: THE DDM 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 99

Scheme 100

Scheme 101

Scheme 102

1. X1 CHECK THE DDM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: DDM C501b. Ignition ON. Measure the voltage between the DDM C501b-1, circuit SBP13 (GY/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to X2. No : VERIFY the Smart Junction Box (SJB) fuse 13 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. X2 CHECK THE DDM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the DDM C501b-24, circuit GD133 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to X3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. X3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DDM AND THE DLC FOR AN OPEN Measure the resistance between the DDM C501b-19, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the DDM C501b-7, 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 X4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. X4 CHECK FOR CORRECT DDM OPERATION Disconnect all the DDM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the DDM 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 DDM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . 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 Y: The Headlamp Control Module 2 (HCM-2) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Headlamps/Autolamps, for schematic and connector information.

PINPOINT TEST Y: THE HCM-2 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 .

Note. The steps in this pinpoint test are carried out from the headlamp jumper harness connection, not the module itself.

Scheme 103

Scheme 104

Scheme 105

Scheme 106

1. Y1 CHECK THE HCM-2 VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: HCM-2 Inline C913. Ignition ON. Measure the voltage between the HCM-2 inline C913-A, circuit CBP43 (GY), harness (female) side and ground. Is the voltage greater than 10 volts? Yes : GO to Y2. No : VERIFY the Smart Junction Box (SJB) fuse 43 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. Y2 CHECK THE HCM-2 GROUND CIRCUIT FOR AN OPEN Disconnect: Negative Battery Cable. Measure the resistance between the HCM-2 inline C913-D, circuit GD133 (BK), harness (female) side and ground. Is the resistance less than 5 ohms? Yes : GO to Y3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. Y3 CHECK THE MS-CAN CIRCUITS BETWEEN THE HCM-2 AND THE DLC FOR AN OPEN Measure the resistance between the HCM-2 inline C913-C, circuit VDB06 (GY/OG), harness (female) side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the HCM-2 inline C913-F, circuit VDB07 (VT/OG), harness (female) 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 Y4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. Y4 CHECK FOR CORRECT HCM-2 OPERATION Disconnect the inline HCM-2 connector. Check for: corrosion damaged pins pushed-out pins Connect the inline HCM-2 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 HCM-2 REFER to «EXTERIOR LIGHTING»(ref-355716) . 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 Z: The Dual Climate Controlled Seat Module (DCSM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS , Module Communications Network, for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS , Climate Controlled Seats, for schematic and connector information.

PINPOINT TEST Z: PINPOINT TEST P: THE DCSM 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. If a seat equipped with a Supplemental Restraint System (SRS) component is being serviced, the SRS must be depowered. Refer to SUPPLEMENTAL RESTRAINT SYSTEM .

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

Scheme 107

Scheme 108

Scheme 109

Scheme 110

1. Z1 CHECK THE DCSM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Ignition OFF. For vehicles with seat (side) air bags, carry out the following: Depower the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-355738) . Disconnect the driver seat side air bag module. Connect the restraint system diagnostic tool to the driver seat side air bag module. Disconnect the passenger seat side air bag module. Connect the restraint system diagnostic tool to the passenger seat side air bag module. Connect the negative battery cable. Disconnect: DCSM C3265a. Ignition ON. Measure the voltage between the DCSM C3265a-E, circuit CBX01 (GN/RD), harness side and ground; and between the DCSM C3265a-F, circuit CBX01 (GN/RD), harness side and ground. Are the voltages greater than 10 volts? Yes : GO to Z2. No : VERIFY the Battery Junction Box (BJB) fuse 22 (30A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. Z2 CHECK THE DCSM GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the DCSM C3265a-M, circuit GD903 (BK/WH), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to Z3. No : REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. Z3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DCSM AND THE DLC FOR AN OPEN Disconnect: DCSM C3265c. Measure the resistance between the DCSM C3265c-1, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the DCSM C3265c-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 Z4. No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. Z4 CHECK FOR CORRECT DCSM OPERATION Disconnect all the DCSM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the DCSM 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 DCSM. REFER to «SEATING»(ref-355731) . 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 AA: INTERMITTENT NO HS-CAN COMMUNICATION, COMMUNICATION CAN BE INTERMITTENTLY ESTABLISHED

Note. Various modules set network DTCs during this test procedure. Clear the DTCs from all modules after the diagnostic procedure is complete.

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

Scheme 111

Scheme 112

Scheme 113

Scheme 114

1. AA1 CHECK THE DATA LINK CONNECTOR (DLC) PINS FOR DAMAGE Ignition OFF. Disconnect the scan tool cable from the DLC. Inspect DLC pins 6 and 14 for damage. Are DLC pins 6 and 14 OK? Yes : GO to AA2. No : REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. AA2 CHECK THE HS-CAN TERMINATION RESISTANCE Ignition OFF. 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 AA3. No : Go To «PINPOINT TEST AB: NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S34310760302010012800000) .
3. AA3 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 : CONNECT the negative battery cable. GO to AA4. No : Go To «PINPOINT TEST AB: NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S34310760302010012800000) .
4. AA4 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE 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. Is the voltage greater than 6 volts? Yes : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool. No : GO to AA5.
5. AA5 CHECK FOR RESTORED COMMUNICATION WITH THE PCM DISABLED NOTE: An integrated diagnostic system (IDS) session must be established prior to disabling the PCM in this test step. If the PCM has failed communication during multiple attempts to identify the vehicle, first identify the vehicle manually by entering a PCM part number, calibration number or tear tag when prompted by IDS. NOTE: When a vehicle is manually identified by a PCM part number, calibration number or tear tag, the IDS does not automatically run a network test. The network test must be manually selected and run. NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: Battery Junction Box (BJB) Fuses 23 (7.5A), 37 (10A) and 47 (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. Go To «PINPOINT TEST A: THE PCM DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S34893048162010012800000) . No : INSTALL the removed fuses. GO to AA6.
6. AA6 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ABS MODULE AND PSCM DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: Battery Junction Box (BJB) Fuse 12 (20A). Disconnect: Smart Junction Box (SJB) Fuse 34 (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 AA7. No : INSTALL the removed fuses. GO to AA8 .
7. AA7 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PSCM DISCONNECTED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: Power Steering Control Module (PSCM) C1463a. 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 PSCM. Go To «PINPOINT TEST D: THE POWER STEERING CONTROL MODULE (PSCM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S21820511102010012800000) . No : CONNECT the PSCM. Go To «PINPOINT TEST B: THE ABS MODULE DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S05586611702010012800000) .
8. AA8 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE IPC AND HUD MODULE DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: SJB Fuse 26 (10A) and 29 (5A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other modules pass the network test? Yes : INSTALL the removed fuses. If the vehicle is equipped with a Head Up Display (HUD) module, GO to AA9. If the vehicle is not equipped with a HUD module, Go To «PINPOINT TEST C»(ref-355713-S42401651912010012800000) . No : INSTALL the removed fuses. GO to AA10 .
9. AA9 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE HUD MODULE DISCONNECTED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: Head Up Display (HUD) Module C2395. 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 HUD module. Go To «PINPOINT TEST G: THE HEAD UP DISPLAY (HUD) MODULE DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S00177904002010012800000) . No : CONNECT the HUD module. Go To «PINPOINT TEST C: THE INSTRUMENT PANEL CLUSTER (IPC) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S42401651912010012800000) .
10. AA10 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RCM DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: SJB Fuse 32 (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: THE RESTRAINTS CONTROL MODULE (RCM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S27072734962010012800000) . No : INSTALL the removed fuse. GO to AA11.
11. AA11 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE OCSM DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: SJB Fuse 46 (7.5A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other modules pass the network test? Yes : INSTALL the removed fuse. Go To «PINPOINT TEST F: THE OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) DOES NOT COMMUNICATE WITH THE SCAN TOOL»(ref-355713-S10465811032010012800000) . No : INSTALL the removed fuse. If the vehicle is equipped with a 4X4 control module and/or Cruise-Control Module (C-CM), GO to AA12. If the vehicle not is equipped with a 4X4 control module or C-CM, GO to AA14 .
12. AA12 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE 4X4 CONTROL MODULE AND PAM DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: SJB Fuses 11 (10A) and 35 (10A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other modules pass the network test? Yes : INSTALL the removed fuses. If the vehicle is equipped with only a 4X4 control module, Go To «PINPOINT TEST H: THE 4X4 CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S06121766182010012800000) . If the vehicle is equipped with only a Parking Aid Module (PAM), Go To «PINPOINT TEST J: THE PARKING AID MODULE (PAM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S33373606672010012800000) . If the vehicle is equipped with both a 4X4 control module and a PAM, GO to AA13. No : INSTALL the removed fuses. GO to AA14 .
13. AA13 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE 4X4 CONTROL MODULE DISCONNECTED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: 4X4 Control Module C281. Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other modules pass the network test? Yes : CONNECT the 4X4 control module. Go To «PINPOINT TEST H: THE 4X4 CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S06121766182010012800000) . No : CONNECT the 4X4 control module. Go To «PINPOINT TEST J: THE PARKING AID MODULE (PAM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S33373606672010012800000) .
14. AA14 VERIFY VEHICLE EQUIPMENT - C-CM NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Inspect the vehicle for a Cruise-Control Module (C-CM). Is the vehicle equipped with a C-CM? Yes : GO to AA15. No : GO to AA16 .
15. AA15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE C-CM DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: BJB Fuses 13 (5A) and 36 (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 I: THE CRUISE-CONTROL MODULE (C-CM) DOES NOT COMMUNICATE WITH THE SCAN TOOL»(ref-355713-S33507279442010012800000) . No : INSTALL the removed fuses. GO to AA16. AA16 VERIFY VEHICLE EQUIPMENT - APIM NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Inspect the vehicle for an Accessory Protocol Interface Module (APIM). Is the vehicle equipped with an APIM? Yes : GO to AA17. No : GO to AA18 . AA17 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE APIM DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: SJB Fuse 14 (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 L: THE ACCESSORY PROTOCOL INTERFACE MODULE (APIM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S22618918872010012800000) . No : INSTALL the removed fuse. GO to AA18. AA18 VERIFY VEHICLE EQUIPMENT - RFA MODULE NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Inspect the vehicle for a Remote Function Actuator (RFA) module. Is the vehicle equipped with an RFA module? Yes : GO to AA19. No : An intermittent fault is not present. Go To «PINPOINT TEST AB: NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S34310760302010012800000) . AA19 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RFA MODULE DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Disconnect: SJB Fuses 12 (7.5A) and 27 (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 K: THE REMOTE FUNCTION ACTUATOR (RFA) MODULE DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S00798778222010012800000) . No : INSTALL the removed fuses. An intermittent fault is not present. Go To «PINPOINT TEST AB: NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S34310760302010012800000) .

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

Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.

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

1. AB1 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 AB2. No : REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. AB2 CHECK THE HS-CAN TERMINATION RESISTANCE Ignition OFF. 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 AB3. No : GO to AB5 .
3. AB3 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 AB4. No : GO to AB23 .
4. AB4 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect: 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 : The HS-CAN has tested within specifications. Go To «PINPOINT TEST AA: INTERMITTENT NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, COMMUNICATION CAN BE INTERMITTENTLY ESTABLISHED»(ref-355713-S09139407142010012800000) to diagnose an intermittent HS-CAN fault.
5. AB5 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 AB6. No : GO to AB9 .
6. AB6 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 AB7. No : GO to AB8 .
7. AB7 CHECK THE HS-CAN CIRCUITS BETWEEN THE PCM AND THE DLC FOR AN OPEN For 3.5L, measure the resistance between the PCM C175b-2, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. For 3.5L, measure the resistance between the PCM C175b-3, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. For 3.5L GTDI, measure the resistance between the PCM C1381b- 59, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. For 3.5L GTDI, measure the resistance between the PCM C1381b- 58, 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 AB35 . No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
8. AB8 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 C220-25, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the IPC C220-26, 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 AB43 . No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
9. AB9 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 AB11 . No : GO to AB10.
10. AB10 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS 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 circuit in question. CONNECT the negative battery cable. 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.
11. AB11 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER 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 less than 5 ohms? Yes : If the vehicle is equipped with a PAM, GO to AB12. If the vehicle is not equipped with an PAM, GO to AB13 . No : CONNECT the negative battery cable. GO to AB35 .
12. AB12 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE PAM DISCONNECTED Disconnect: PAM C4014. 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 AB13. No : CONNECT the negative battery cable. GO to AB36 .
13. AB13 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE ABS MODULE DISCONNECTED Disconnect: ABS Module C135. 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 : If the vehicle is equipped with a 4X4 control module, GO to AB14. If the vehicle is not equipped with a 4X4 control module, GO to AB15 . No : CONNECT the negative battery cable. GO to AB37 .
14. AB14 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE 4X4 CONTROL MODULE DISCONNECTED Disconnect: 4X4 Control Module C281. 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 AB15. No : CONNECT the negative battery cable. GO to AB38 .
15. AB15 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE RCM DISCONNECTED Disconnect: Restraints Control Module (RCM) C310b. 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 : If the vehicle is equipped with a Remote Function Actuator (RFA) module, GO to AB16. If the vehicle is not equipped with an RFA module, GO to AB17 . No : CONNECT the negative battery cable. GO to AB39 .
16. AB16 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE RFA MODULE DISCONNECTED Disconnect: RFA Module C2153d. 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 AB17. No : CONNECT the negative battery cable. GO to AB40 .
17. AB17 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE OCSM DISCONNECTED Disconnect: Occupant Classification System Module (OCSM) C3159. 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 : If the vehicle is equipped with a Cruise-Control Module (C-CM), GO to AB18. If the vehicle is not equipped with a C-CM, GO to AB19 . No : CONNECT the negative battery cable. GO to AB41 .
18. AB18 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE C-CM DISCONNECTED Disconnect: C-CM C1582. 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 AB19. No : CONNECT the negative battery cable. GO to AB42 .
19. AB19 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE IPC DISCONNECTED Disconnect: IPC C220. 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 : If the vehicle is equipped with an Accessory Protocol Interface Module (APIM), GO to AB20. If the vehicle is not equipped with an APIM, GO to AB21 . No : CONNECT the negative battery cable. GO to AB43 .
20. AB20 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE APIM DISCONNECTED Disconnect: APIM C3342. 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 AB21. No : CONNECT the negative battery cable. GO to AB44 .
21. AB21 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE PSCM DISCONNECTED Disconnect: Power Steering Control Module (PSCM) C1463a. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Is the resistance less than 5 ohms? Yes : If the vehicle is equipped with a Head Up Display (HUD) module, GO to AB22. If the vehicle is not equipped with a HUD module, REPAIR the circuits. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool. No : CONNECT the negative battery cable. GO to AB45 .
22. AB22 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE HUD MODULE DISCONNECTED Disconnect: HUD Module C2395. 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 : REPAIR the circuits. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool. No : CONNECT the negative battery cable. GO to AB46 .
23. AB23 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND 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 less than 5 ohms? Yes : CONNECT the negative battery cable. GO to AB35 . No : If the vehicle is equipped with a PAM, GO to AB24. If the vehicle is not equipped with a PAM, GO to AB25 .
24. AB24 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE PAM DISCONNECTED Disconnect: PAM C4014. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB36 . No : GO to AB25.
25. AB25 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE ABS MODULE DISCONNECTED Disconnect: ABS Module C135. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB37 . No : If the vehicle is equipped with a 4X4 control module, GO to AB26. If the vehicle is not equipped with a 4X4 control module, GO to AB27 .
26. AB26 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE 4X4 CONTROL MODULE DISCONNECTED Disconnect: 4X4 Control Module C281. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB38 . No : GO to AB27.
27. AB27 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE RCM DISCONNECTED Disconnect: Restraints Control Module (RCM) C310b. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB39 . No : If the vehicle is equipped with a Remote Function Actuator (RFA) module, GO to AB28. If the vehicle is not equipped with an RFA module, GO to AB29 .
28. AB28 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE RFA MODULE DISCONNECTED Disconnect: RFA Module C2153d. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB40 . No : GO to AB29.
29. AB29 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE OCSM DISCONNECTED Disconnect: Occupant Classification System Module (OCSM) C3159. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB41 . No : If the vehicle is equipped with a Cruise-Control Module (C-CM), GO to AB30. If the vehicle is not equipped with a C-CM, GO to AB31 .
30. AB30 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE C-CM DISCONNECTED Disconnect: C-CM C1582. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB42 . No : GO to AB31.
31. AB31 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE IPC DISCONNECTED Disconnect: IPC C220. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB43 . No : If the vehicle is equipped with an Accessory Protocol Interface Module (APIM), GO to AB32. If the vehicle is not equipped with an APIM, GO to AB33 .
32. AB32 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE APIM DISCONNECTED Disconnect: APIM C3342. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB44 . No : GO to AB33.
33. AB33 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE PSCM DISCONNECTED Disconnect: Power Steering Control Module (PSCM) C1463a. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB45 . No : If the vehicle is equipped with a Head Up Display (HUD) module, GO to AB34. If the vehicle is not equipped with an HUD module, REPAIR the circuits. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
34. AB34 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE HUD MODULE DISCONNECTED Disconnect: HUD Module C2395. Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit VDB05 (WH), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AB46 . No : REPAIR the circuits. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
35. AB35 CHECK FOR CORRECT PCM OPERATION Disconnect all the PCM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the PCM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new PCM. REFER to the appropriate information «ELECTRONIC ENGINE CONTROLS»(ref-355744) . 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.
36. AB36 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Verify the concern is still present. Is the concern still present? Yes : INSTALL a new PAM. REFER to «PARKING AID»(ref-355764) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
37. AB37 CHECK FOR CORRECT ABS MODULE OPERATION Disconnect the ABS module connector. Check for: corrosion damaged pins pushed-out pins Connect the ABS module connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new ABS module. REFER to «VEHICLE DYNAMIC SYSTEMS»(ref-355728) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
38. AB38 CHECK FOR CORRECT 4X4 CONTROL MODULE OPERATION Disconnect the 4X4 control module connector. Check for: corrosion damaged pins pushed-out pins Connect the 4X4 control module connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new 4X4 control module. REFER to «FOUR WHEEL DRIVE (4WD) SYSTEMS»(ref-355757) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
39. AB39 CHECK FOR CORRECT RCM OPERATION Disconnect all the RCM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the RCM connectors and make sure they seat correctly. Verify the concern is still present. Is the concern still present? Yes : INSTALL a new RCM. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-355738) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
40. AB40 CHECK FOR CORRECT RFA MODULE OPERATION Disconnect all the RFA module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the RFA module connectors and make sure they seat correctly. Verify the concern is still present. Is the concern still present? Yes : INSTALL a new RFA module. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules. REPEAT the network test with the scan tool.
41. AB41 CHECK FOR CORRECT OCSM OPERATION Disconnect the OCSM connector. Check for: corrosion damaged pins pushed-out pins Connect the OCSM connector and make sure it seats correctly. Verify the concern is still present. Is the concern still present? Yes : INSTALL a new OCSM. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-355738) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
42. AB42 CHECK FOR CORRECT C-CM OPERATION Disconnect the C-CM connector. Check for: corrosion damaged pins pushed-out pins Connect the C-CM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new C-CM. REFER to «CRUISE CONTROL»(ref-355760) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
43. AB43 CHECK FOR CORRECT IPC OPERATION Disconnect the IPC connector. Check for: corrosion damaged pins pushed-out pins Connect the IPC connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new IPC. REFER to «INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES»(ref-355718) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
44. AB44 CHECK FOR CORRECT APIM OPERATION Disconnect all the APIM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the APIM connectors and make sure they seat correctly. Verify the concern is still present. Is the concern still present? Yes : INSTALL a new APIM. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-355740) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
45. AB45 CHECK FOR CORRECT PSCM OPERATION Disconnect all the PSCM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the PSCM connectors and make sure they seat correctly. Verify the concern is still present. Is the concern still present? Yes : INSTALL a new PSCM. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
46. AB46 CHECK FOR CORRECT HUD MODULE OPERATION Disconnect the HUD module connector. Check for: corrosion damaged pins pushed-out pins Connect the HUD module connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new HUD module. REFER to «COLLISION AVOIDANCE»(ref-355737) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

PINPOINT TEST AC: INTERMITTENT NO MS-CAN COMMUNICATION, ONE OR MORE MODULES ARE NOT RESPONDING DURING NETWORK TEST

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. Various network DTCs set while disabling modules in this test procedure which need to be cleared after the diagnostic procedure is completed.

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

Scheme 115

Scheme 116

Scheme 117

1. AC1 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 AC2. No : REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. AC2 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 AC3. No : An intermittent fault is not present. Go To «PINPOINT TEST AD: NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S33232701102010012800000) .
3. AC3 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 the DLC C251-11, circuit VDB07 (VT/OG), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : GO to AC4. No : An intermittent fault is not present. Go To «PINPOINT TEST AD: NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S33232701102010012800000) .
4. AC4 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect: 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. Is the voltage greater than 6 volts? Yes : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool. No : GO to AC5.
5. AC5 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SJB DISABLED Disconnect: Smart Junction Box (SJB) Fuse 5 (10A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. Go To «PINPOINT TEST U: THE SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S04534389222010012800000) . No : INSTALL the removed fuse. If the vehicle is equipped with a Dual Climate Controlled Seat Module (DCSM), GO to AC6. If the vehicle is not equipped with a DCSM, GO to AC7 .
6. AC6 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DCSM DISABLED Disconnect: Battery Junction Box (BJB) Fuse 22 (30A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. Go To «PINPOINT TEST Z: THE DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S40187783742010012800000) . No : INSTALL the removed fuse. GO to AC7.
7. AC7 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ACM DISABLED Disconnect: SJB Fuse 39 (20A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. Go To «PINPOINT TEST M: THE AUDIO CONTROL MODULE (ACM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S22285928092010012800000) . No : INSTALL the removed fuse. If the vehicle is equipped with an audio Digital Signal Processing (DSP) module, GO to AC8. If the vehicle is not equipped with an audio DSP module, GO to AC9 .
8. AC8 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE AUDIO DSP MODULE DISABLED Disconnect: SJB Fuse 19 (25A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. Go To «PINPOINT TEST W: THE AUDIO DIGITAL SIGNAL PROCESSING (DSP) MODULE DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S25589767482010012800000) . No : INSTALL the removed fuse. GO to AC9.
9. AC9 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE HVAC MODULE DISABLED Disconnect: SJB Fuse 15 (10A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. Go To «PINPOINT TEST V: THE HVAC MODULE DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S39024501642010012800000) . No : INSTALL the removed fuse. If the vehicle is equipped with an APIM, FDIM, ILCM and/or GPSM, GO to AC10. If the vehicle is not equipped with an APIM, FDIM, DSM and/or GPSM, GO to AC18 .
10. AC10 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE APIM, FDIM, GPSM AND DSM DISABLED Disconnect: SJB Fuse 14 (10A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. If the vehicle is equipped with an Accessory Protocol Interface Module (APIM), GO to AC11. If the vehicle is not equipped with an APIM, GO to AC12 . No : INSTALL the removed fuse. GO to AC12 .
11. AC11 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE APIM DISCONNECTED Disconnect: APIM C3342. Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : CONNECT the APIM. Go To «PINPOINT TEST L: THE ACCESSORY PROTOCOL INTERFACE MODULE (APIM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S22618918872010012800000) . No : CONNECT the APIM. GO to AC12.
12. AC12 VERIFY VEHICLE EQUIPMENT - FDIM NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Inspect the vehicle for a Front Display Interface Module (FDIM). Is the vehicle equipped with an FDIM? Yes : GO to AC13. No : GO to AC14 .
13. AC13 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE FDIM DISCONNECTED Disconnect: FDIM C2123. Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : CONNECT the FDIM. Go To «PINPOINT TEST O: THE FRONT DISPLAY INTERFACE MODULE (FDIM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S26716682082010012800000) . No : CONNECT the FDIM. GO to AC14.
14. AC14 VERIFY VEHICLE EQUIPMENT - GPSM NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Inspect the vehicle for a Global Positioning System Module (GPSM). Is the vehicle equipped with a GPSM? Yes : GO to AC15. No : GO to AC16 .
15. AC15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE GPSM DISCONNECTED Disconnect: GPSM C2398. Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : CONNECT the GPSM. Go To «PINPOINT TEST P: THE GLOBAL POSITIONING SYSTEM MODULE (GPSM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S00802639902010012800000) . No : CONNECT the GPSM. GO to AC16.
16. AC16 VERIFY VEHICLE EQUIPMENT - DSM NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Inspect the vehicle for an DSM. Is the vehicle equipped with an DSM? Yes : GO to AC17. No : An intermittent fault is not present. Go To «PINPOINT TEST AD: NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S33232701102010012800000) .
17. AC17 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DSM DISCONNECTED Disconnect: DSM C341d. Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : CONNECT the DSM. Go To «PINPOINT TEST T: THE DRIVER SEAT MODULE (DSM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S37771400282010012800000) . No : An intermittent fault is not present. Go To «PINPOINT TEST AD: NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S33232701102010012800000) .
18. AC18 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE FCIM AND ILCM DISABLED Disconnect: SJB Fuse 16 (15A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. If the vehicle is not equipped with an ILCM, Go To «PINPOINT TEST N: THE FRONT CONTROLS INTERFACE MODULE (FCIM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S01575894722010012800000) . If the vehicle is equipped with an ILCM, GO to AC19. No : INSTALL the removed fuse. If the vehicle is equipped with a Side Obstacle Detection Control Module - Left (SOD-L) and Side Obstacle Detection Control Module - Right (SOD-R), GO to AC20 . If the vehicle is not equipped with an SOD-L and SOD-R, GO to AC22 .
19. AC19 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ILCM DISCONNECTED Disconnect: ILCM C2392. Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : CONNECT the ILCM. Go To «PINPOINT TEST Q: THE INTERIOR LIGHTING CONTROL MODULE (ILCM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S42404611052010012800000) . No : CONNECT the ILCM. Go To «PINPOINT TEST N: THE FRONT CONTROLS INTERFACE MODULE (FCIM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S01575894722010012800000) .
20. AC20 CHECK FOR RESTORED NETWORK COMMUNICATION WITH SOD-L AND SOD-R DISABLED Disconnect: SJB Fuse 35 (10A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. GO to AC21. No : INSTALL the removed fuse. GO to AC22 .
21. AC21 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SOD-L DISCONNECTED Disconnect: SOD-L C4369. Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : CONNECT the SOD-L. Go To «PINPOINT TEST R: THE SIDE OBSTACLE DETECTION CONTROL MODULE - LEFT (SOD-L) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S11534493962010012800000) . No : CONNECT the SOD-L. Go To «PINPOINT TEST S: THE SIDE OBSTACLE DETECTION CONTROL MODULE - RIGHT (SOD-R) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S02539109282010012800000) .
22. AC22 VERIFY VEHICLE EQUIPMENT - DDM NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Inspect the vehicle for a Driver Door Module (DDM). Is the vehicle equipped with a DDM? Yes : GO to AC23. No : GO to AC24 .
23. AC23 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DDM DISABLED Disconnect: SJB Fuse 13 (5A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. Go To «PINPOINT TEST X: THE DRIVER DOOR MODULE (DDM) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S29140595442010012800000) . No : INSTALL the removed fuse. GO to AC24.
24. AC24 VERIFY VEHICLE EQUIPMENT - RFA MODULE NOTE: When re-running the network test, the network test application must be first closed or the screen display reverts back to the prior run network test results. Inspect the vehicle for a Remote Function Actuator (RFA) module. Is the vehicle equipped with a RFA module? Yes : GO to AC25. No : GO to AC26.
25. AC25 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RFA MODULE DISABLED Disconnect: SJB Fuses 12 (7.5A) and 27 (20A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuses. Go To «PINPOINT TEST K»(ref-355713-S00798778222010012800000) . No : INSTALL the removed fuses. GO to AC26 .
26. AC26 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE IPC DISABLED Disconnect: SJB Fuses 26 (10A) and 29 (5A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuses. Go To «PINPOINT TEST C: THE INSTRUMENT PANEL CLUSTER (IPC) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S42401651912010012800000) . No : INSTALL the removed fuses. If the vehicle is equipped with an Headlamp Control Module 2 (HCM-2), GO to AC27. If the vehicle is not equipped with a HCM-2, an intermittent fault is not present. Go To «PINPOINT TEST AD: NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S33232701102010012800000) .
27. AC27 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE HCM-2 DISABLED Disconnect: SJB Fuse 43 (10A). Enter the following diagnostic mode on the scan tool: Network Test. Repeat the network test. Do all other MS-CAN modules pass the network test? Yes : INSTALL the removed fuse. Go To «PINPOINT TEST Y: THE HEADLAMP CONTROL MODULE 2 (HCM-2) DOES NOT RESPOND TO THE SCAN TOOL»(ref-355713-S42437887052010012800000) . No : An intermittent fault is not present. INSTALL the removed fuse. Go To «PINPOINT TEST AD: NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING»(ref-355713-S33232701102010012800000) .

Pinpoint Test AD: No Medium Speed Controller Area Network (MS-CAN) Communication, All Modules Are Not Responding

Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.

PINPOINT TEST AD: 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 118

Scheme 119

Scheme 120

Scheme 121

Scheme 122

1. AD1 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 AD2. No : REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. AD2 CHECK THE MS-CAN TERMINATION RESISTANCE Ignition OFF. 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 AD3. No : GO to AD5 .
3. AD3 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 the DLC C251-11, circuit VDB07 (VT/OG), harness side and ground. Are the resistances greater than 1,000 ohms? Yes : GO to AD4. No : GO to AD34 .
4. AD4 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect: 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. Is the voltage greater than 6 volts? Yes : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The MS-CAN has tested within specifications. Go To «PINPOINT TEST AC: INTERMITTENT NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ONE OR MORE MODULES ARE NOT RESPONDING DURING NETWORK TEST»(ref-355713-S12782876892010012800000) to diagnose the intermittent MS-CAN fault.
5. AD5 CHECK THE MS-CAN TERMINATION RESISTOR 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 108 and 132 ohms? Yes : GO to AD6. No : GO to AD9 .
6. AD6 CHECK THE MS-CAN TERMINATION RESISTOR WITH THE SJB DISCONNECTED Disconnect: Smart Junction Box (SJB) C2280b. 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 108 and 132 ohms? Yes : GO to AD7. No : GO to AD8 .
7. AD7 CHECK THE MS-CAN CIRCUITS BETWEEN THE SJB AND THE DLC FOR AN OPEN Measure the resistance between the SJB C2280b-37, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the SJB C2280b-38, 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 AD57 . No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
8. AD8 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 C220-12, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the IPC C220-13, 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 AD65 . No : REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
9. AD9 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER 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 less than 5 ohms? Yes : GO to AD11 . No : GO to AD10.
10. AD10 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR AN OPEN 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 greater than 10,000 ohms? Yes : REPAIR the circuit in question. CONNECT the negative battery cable. 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.
11. AD11 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE SJB DISCONNECTED Disconnect: SJB C2280b. 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 less than 5 ohms? Yes : If the vehicle is equipped with a Remote Function Actuator (RFA) module, GO to AD12. If the vehicle is not equipped with an RFA module, GO to AD13 . No : CONNECT the negative battery cable. GO to AD57 .
12. AD12 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE RFA MODULE DISCONNECTED Disconnect: RFA Module C2153d. 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 less than 5 ohms? Yes : GO to AD13. No : CONNECT the negative battery cable. GO to AD58 .
13. AD13 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE ACM DISCONNECTED Disconnect: Audio Control Module (ACM) C240c. 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 less than 5 ohms? Yes : If the vehicle is equipped with an audio Digital Signal Processing (DSP) module, GO to AD14. If the vehicle is not equipped with an audio DSP module, GO to AD15 . No : CONNECT the negative battery cable. GO to AD59 .
14. AD14 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE AUDIO DSP MODULE DISCONNECTED Disconnect: Audio DSP Module C4326a. 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 less than 5 ohms? Yes : GO to AD15. No : CONNECT the negative battery cable. GO to AD60 .
15. AD15 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE FCIM DISCONNECTED Disconnect: Front Controls Interface Module (FCIM) C2402. 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 less than 5 ohms? Yes : If the vehicle is equipped with a Front Display Interface Module (FDIM), GO to AD16. If the vehicle is not equipped with an FDIM, GO to AD17 . No : CONNECT the negative battery cable. GO to AD61 .
16. AD16 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE FDIM DISCONNECTED Disconnect: FDIM C2123. 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 less than 5 ohms? Yes : GO to AD17. No : CONNECT the negative battery cable. GO to AD62 .
17. AD17 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE HVAC MODULE DISCONNECTED Disconnect: HVAC Module C2357 (Manual) Or C228a (Dual Automatic Temperature Control (DATC)). 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 less than 5 ohms? Yes : If the vehicle is equipped with a Global Positioning System Module (GPSM), GO to AD18. If the vehicle is not equipped with a GPSM, GO to AD19 . No : CONNECT the negative battery cable. GO to AD63 .
18. AD18 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE GPSM DISCONNECTED Disconnect: GPSM C2398. 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 less than 5 ohms? Yes : GO to AD19. No : CONNECT the negative battery cable. GO to AD64 .
19. AD19 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE IPC DISCONNECTED Disconnect: Instrument Panel Cluster (IPC) C220. 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 less than 5 ohms? Yes : If the vehicle is equipped with an Interior Lighting Control Module (ILCM), GO to AD20. If the vehicle is not equipped with an ILCM, GO to AD21 . No : CONNECT the negative battery cable. GO to AD65 .
20. AD20 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE ILCM DISCONNECTED Disconnect: ILCM C2392. 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 less than 5 ohms? Yes : GO to AD21. No : CONNECT the negative battery cable. GO to AD66 .
21. AD21 VERIFY VEHICLE EQUIPMENT - DSM Verify whether the vehicle is equipped with a Driver Seat Module (DSM). Is the vehicle equipped with a DSM? Yes : GO to AD22. No : GO to AD23 .
22. AD22 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE DSM DISCONNECTED Disconnect: DSM C341d. 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 less than 5 ohms? Yes : GO to AD23. No : CONNECT the negative battery cable. GO to AD67 .
23. AD23 VERIFY VEHICLE EQUIPMENT - DCSM Verify whether the vehicle is equipped with a Dual Climate Controlled Seat Module (DCSM). Is the vehicle equipped with a DCSM? Yes : GO to AD24. No : GO to AD25 .
24. AD24 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE DCSM DISCONNECTED Disconnect: DCSM C3265c. 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 less than 5 ohms? Yes : GO to AD25. No : CONNECT the negative battery cable. GO to AD68 .
25. AD25 VERIFY VEHICLE EQUIPMENT - APIM Verify whether the vehicle is equipped with an Accessory Protocol Interface Module (APIM). Is the vehicle equipped with an APIM? Yes : GO to AD26. No : GO to AD27 .
26. AD26 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE APIM DISCONNECTED Disconnect: APIM C3342. 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 less than 5 ohms? Yes : GO to AD27. No : CONNECT the negative battery cable. GO to AD69 .
27. AD27 VERIFY VEHICLE EQUIPMENT - DDM Verify whether the vehicle is equipped with a Driver Door Module (DDM). Is the vehicle equipped with a DDM? Yes : GO to AD28. No : GO to AD29 .
28. AD28 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE DDM DISCONNECTED Disconnect: DDM C501b. 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 less than 5 ohms? Yes : GO to AD29. No : CONNECT the negative battery cable. GO to AD70 .
29. AD29 VERIFY VEHICLE EQUIPMENT - HCM-2 Verify whether the vehicle is equipped with a Headlamp Control Module 2 (HCM-2). Is the vehicle equipped with an HCM-2? Yes : GO to AD30. No : GO to AD31 .
30. AD30 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE HCM-2 DISCONNECTED Disconnect: HCM-2 Inline C913. 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 less than 5 ohms? Yes : GO to AD31. No : CONNECT the negative battery cable. GO to AD71 .
31. AD31 VERIFY VEHICLE EQUIPMENT - SIDE OBSTACLE DETECTION Verify whether the vehicle is equipped with side obstacle detection. Is the vehicle equipped with side obstacle detection? Yes : GO to AD32. No : REPAIR the circuits. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
32. AD32 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE SOD-L DISCONNECTED Disconnect: Side Obstacle Detection Control Module - Left (SOD-L) C4369. 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 less than 5 ohms? Yes : GO to AD33. No : CONNECT the negative battery cable. GO to AD72 .
33. AD33 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE SOD-R DISCONNECTED Disconnect: Side Obstacle Detection Control Module - Right (SOD-R) C4370. 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 less than 5 ohms? Yes : REPAIR the circuit. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool. No : CONNECT the negative battery cable. GO to AD73 .
34. AD34 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE SJB DISCONNECTED Disconnect: SJB C2280b. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD57 . No : If the vehicle is equipped with a Remote Function Actuator (RFA) module, GO to AD35. If the vehicle is not equipped with a RFA module, GO to AD36 .
35. AD35 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE RFA MODULE DISCONNECTED Disconnect: RFA Module C2153d. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD58 . No : GO to AD36.
36. AD36 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE ACM DISCONNECTED Disconnect: Audio Control Module (ACM) C240c. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD59 . No : If the vehicle is equipped with an audio Digital Signal Processing (DSP) module, GO to AD37. If the vehicle is not equipped with an audio DSP module, GO to AD38 .
37. AD37 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE AUDIO DSP MODULE DISCONNECTED Disconnect: Audio DSP Module C4326a. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD60 . No : GO to AD38.
38. AD38 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE FCIM DISCONNECTED Disconnect: Front Controls Interface Module (FCIM) C2402. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD61 . No : If the vehicle is equipped with a Front Display Interface Module (FDIM), GO to AD39. If the vehicle is not equipped with an FDIM, GO to AD40 .
39. AD39 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE FDIM DISCONNECTED Disconnect: FDIM C2123. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD62 . No : GO to AD40.
40. AD40 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE HVAC MODULE DISCONNECTED Disconnect: HVAC Module C2357 (Manual), C228a (Dual Automatic Temperature Control (DATC)). 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD63 . No : If the vehicle is equipped with a Global Positioning System Module (GPSM), GO to AD41. If the vehicle is not equipped with a GPSM, GO to AD42 .
41. AD41 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE GPSM DISCONNECTED Disconnect: GPSM C2398. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD64 . No : GO to AD42.
42. AD42 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE IPC DISCONNECTED Disconnect: Instrument Panel Cluster (IPC) C220. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD65 . No : If the vehicle is equipped with an Interior Lighting Control Module (ILCM), GO to AD43. If the vehicle is not equipped with an ILCM, GO to AD44 .
43. AD43 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE ILCM DISCONNECTED Disconnect: ILCM C2392. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD66 . No : GO to AD44.
44. AD44 VERIFY VEHICLE EQUIPMENT - DSM Verify whether the vehicle is equipped with a Driver Seat Module (DSM). Is the vehicle equipped with a DSM? Yes : GO to AD45. No : GO to AD46 .
45. AD45 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE DSM DISCONNECTED Disconnect: DSM C341d. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD67 . No : GO to AD46.
46. AD46 VERIFY VEHICLE EQUIPMENT - DCSM Verify whether the vehicle is equipped with a Dual Climate Controlled Seat Module (DCSM). Is the vehicle equipped with a DCSM? Yes : GO to AD47. No : GO to AD48 .
47. AD47 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE DCSM DISCONNECTED Disconnect: DCSM C3265c. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD68 . No : GO to AD48.
48. AD48 VERIFY VEHICLE EQUIPMENT - APIM Verify whether the vehicle is equipped with an Accessory Protocol Interface Module (APIM). Is the vehicle equipped with an APIM? Yes : GO to AD49. No : GO to AD50 .
49. AD49 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE APIM DISCONNECTED Disconnect: APIM C3342. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD69 . No : GO to AD50.
50. AD50 VERIFY VEHICLE EQUIPMENT - DDM Verify whether the vehicle is equipped with a Driver Door Module (DDM). Is the vehicle equipped with a DDM? Yes : GO to AD51. No : GO to AD52 .
51. AD51 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE DDM DISCONNECTED Disconnect: DDM C501b. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD70 . No : GO to AD52.
52. AD52 VERIFY VEHICLE EQUIPMENT - HCM-2 Verify whether the vehicle is equipped with a Headlamp Control Module 2 (HCM-2). Is the vehicle equipped with an HCM-2? Yes : GO to AD53. No : GO to AD54 .
53. AD53 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE HCM-2 DISCONNECTED Disconnect: HCM-2 Inline C913. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD71 . No : GO to AD54.
54. AD54 VERIFY VEHICLE EQUIPMENT - SIDE OBSTACLE DETECTION Verify whether the vehicle is equipped with side obstacle detection. Is the vehicle equipped with side obstacle detection? Yes : GO to AD55. No : REPAIR the circuits. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
55. AD55 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE SOD-L DISCONNECTED Disconnect: Side Obstacle Detection Control Module - Left (SOD-L) C4369. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD72 . No : GO to AD56.
56. AD56 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE SOD-R DISCONNECTED Disconnect: Side Obstacle Detection Control Module - Right (SOD-R) C4370. 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 and ground. Are the resistances greater than 1,000 ohms? Yes : CONNECT the negative battery cable. GO to AD73 . No : REPAIR the circuit. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
57. AD57 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB 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 SJB. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . 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.
58. AD58 CHECK FOR CORRECT RFA MODULE OPERATION Disconnect all the RFA module connectors. Check for: corrosion damaged pins pushed-out pins Connect the RFA module 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 module. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
59. AD59 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-355740) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
60. AD60 CHECK FOR CORRECT AUDIO DSP MODULE OPERATION Disconnect all the audio DSP module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the audio DSP module 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 audio DSP module. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-355740) . 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. CONNECT all modules.
61. AD61 CHECK FOR CORRECT FCIM OPERATION Disconnect the FCIM connector. Check for: corrosion damaged pins pushed-out pins Connect the FCIM 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 FCIM. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-355740) . 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. CONNECT all modules.
62. AD62 CHECK FOR CORRECT FDIM OPERATION Disconnect the FDIM connector. Check for: corrosion damaged pins pushed-out pins Connect the FDIM 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 FDIM. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-355740) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
63. AD63 CHECK FOR CORRECT HVAC MODULE OPERATION Disconnect all the HVAC module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the HVAC module 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 HVAC module. REFER to «CLIMATE CONTROL»(ref-355756) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
64. AD64 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-355740) . 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. CONNECT all modules.
65. AD65 CHECK FOR CORRECT IPC OPERATION Disconnect the IPC connector. Check for: corrosion damaged pins pushed-out pins Connect the IPC connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new IPC. REFER to «INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES»(ref-355718) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
66. AD66 CHECK FOR CORRECT ILCM OPERATION Disconnect the ILCM connector. Check for: corrosion damaged pins pushed-out pins Connect the ILCM 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 ILCM. REFER to «INTERIOR LIGHTING»(ref-355766) . 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. CONNECT all modules.
67. AD67 CHECK FOR CORRECT DSM OPERATION Disconnect all the DSM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the DSM 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 DSM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
68. AD68 CHECK FOR CORRECT DCSM OPERATION Disconnect all the DCSM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the DCSM 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 DCSM. REFER to «SEATING»(ref-355731) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
69. AD69 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-355740) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
70. AD70 CHECK FOR CORRECT DDM OPERATION Disconnect all the DDM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the DDM 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 DDM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-355714) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.
71. AD71 CHECK FOR CORRECT HCM-2 OPERATION Disconnect the HCM-2 connector. Check for: corrosion damaged pins pushed-out pins Connect the HCM-2 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 HCM-2. REFER to «EXTERIOR LIGHTING»(ref-355716) . CONNECT all modules. 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. CONNECT all modules. REPEAT the network test with the scan tool.
72. AD72 CHECK FOR CORRECT SOD-L OPERATION Disconnect the SOD-L connector. Check for: corrosion damaged pins pushed-out pins Connect the SOD-L 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 SOD-L. REFER to «CRUISE CONTROL»(ref-355760) . CONNECT all modules. 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. CONNECT all modules. REPEAT the network test with the scan tool.
73. AD73 CHECK FOR CORRECT SOD-R OPERATION Disconnect the SOD-R connector. Check for: corrosion damaged pins pushed-out pins Connect the SOD-R 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 SOD-R. REFER to «CRUISE CONTROL»(ref-355760) . CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool. No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CONNECT all modules.

Pinpoint Test AE: No Power To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS 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 123

Scheme 124

Scheme 125

1. AE1 CHECK DLC PINS FOR DAMAGE 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 AE2. No : REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. AE2 CHECK THE VOLTAGE SUPPLY CIRCUIT TO THE DLC Measure the voltage between the DLC C251-16, circuit SBP20 (VT/RD) or (GN/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to AE3. No : VERIFY the Smart Junction Box (SJB) fuse 20 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-360991) to identify the possible causes of the circuit short. REPEAT the network test with the scan tool.
3. AE3 CHECK THE DLC GROUND CIRCUITS FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the DLC C251-4, circuit GD116 (BK/VT) and C251-5, circuit GD114 (BK/BU), harness side and ground. Are the resistances less than 5 ohms? Yes : CONNECT the negative battery cable. REPAIR the scan tool. REPEAT the network test with the scan tool. No : REPAIR the circuit in question. CONNECT the negative battery cable. REPEAT the network test with the scan tool.