Module Communications Network: Diagnosis Ford Fusion I рестайлинг

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): 11 (30A) (no communication with dual climate control seat module [DCSM]) 12 (30A) (no communication with DCSM) 13 (10A) (no communication with accessory protocol interface module [APIM]) 15 (10A) (no communication with driver seat module [DSM]) 16 (15A) (no communication with transmission control module [TCM]) 19 (40A) (no communication with smart junction box [SJB]) 20 (20A) (no communication with audio digital signal processing [DSP] module) 21 (20A) (no communication with audio DSP module) 23 (10A) (no communication with TCM-FNR5 transaxle, PCM) 23 (10A) (no communication with the PCM) 26 (7.5A) (no communication with the PCM) 42 (15A) (no communication with the PCM, 3.0L and 3.5L engines) 47 (15A) (no communication with the PCM, 2.3L engine) SJB fuse(s): 12 (7.5A) (no communication with audio control module [ACM]) 13 (10A) (no communication with instrument cluster [IC], heating ventilation air conditioning [HVAC] module) 18 (20A) (no power to scan tool, no communication with ACM) 20 (7.5A) (no communication with driver door module [DDM], satellite digital audio receiver system [SDARS] module, 4X4 control module) 23 (7.5A) (no communication with IC) 24 (7.5A) (no communication with occupant classification system module [OCSM]) 25 (7.5A) (no communication with restraints control module [RCM]) 26 (7.5A) (no communication with TCM, PCM) 27 (7.5A) (no communication with HVAC module, IC) 28 (10A) (no communication with ABS module, 4X4 control module, PAM) 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. If the cause is not visually evident, connect the scan tool to the DLC. 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 V»(ref-291879-S11072880972008073000000) , 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-291879-S00035251842008073000000) to identify the module not communicating.
6. If the DTCs retrieved are related to the concern, go to DTC Charts. For all other DTCs, refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-291878) article.
7. If no DTCs related to the concern are retrieved, go to «Symptom Chart»(ref-291879-S00035251842008073000000) .

DTC Charts

Note. Network DTCs (U-codes) are often a result of intermittent concerns such as faulty wiring or low battery voltage occurrences. Additionally, vehicle service procedures such as module reprogramming will often set 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 article.

Note. DTC U1900 will set in a module that is reporting a communication fault from another module on the data bus. The module that reports the fault is not the problem module.

COMMUNICATION NETWORK DTC CHART

Symptom Chart

Symptom Chart

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

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Electronic Engine Controls - 2.3L for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Electronic Engine Controls - 3.0L for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Electronic Engine Controls - 3.5L 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.

Scheme 8

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1. A1 POWERTRAIN CONTROL/EMISSIONS DIAGNOSIS (PC/ED) MANUAL PINPOINT TEST QA VERIFICATION CHECK Verify that the PC/ED pinpoint test QA has been performed. Has the PC/ED pinpoint test QA been performed? YES : Go to A2 . NO : REFER to «Introduction - Gasoline Engines»(ref-291242) article, pinpoint test QA, to diagnose no communication with the PCM.
2. A2 CHECK THE HS-CAN TERMINATION RESISTANCE Key in OFF position. NOTE: Failure to disconnect the battery will result in false resistance readings. Disconnect the battery ground 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 A4 . NO : Go to A3 .
3. A3 CHECK THE HS-CAN CIRCUITS BETWEEN THE DLC AND THE PCM FOR AN OPEN 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 : Go to A4 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. A4 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 - 2.3L»(ref-291907) article, «ELECTRONIC ENGINE CONTROLS - 3.0L (4V)»(ref-291913) article or «ELECTRONIC ENGINE CONTROLS - 3.5L»(ref-291920) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test B: The Transmission Control Module (TCM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Transmission Controls - 6 Speed for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Transmission Controls - FNR5 for schematic and connector information.

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

Scheme 11

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Scheme 18

1. B1 CHECK THE TCM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Key in OFF position. Disconnect: TCM C2352a (FNR5 Transaxle) Disconnect: TCM C1533 (6-Speed Transaxle) Key in ON position. For FNR5 transaxles, measure the voltage between the TCM C2352a-3, circuit SBP23 (WH/RD), harness side and ground. For 6-speed transaxles, measure the voltage between the TCM C1533-1, circuit SBB16 (VT/RD), harness side and ground; and between the TCM C1533-11, circuit CBP18 (GY/OG), harness side and ground. Are the voltages greater than 10 volts? YES : Go to B2 . NO : For FNR5 transaxles, VERIFY the battery junction box (BJB) fuse 23 (10A) is OK. For 6-speed transaxles, VERIFY the battery junction box (BJB) fuse 16 (15A) or SJB fuse 26 (7.5A), are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. B2 CHECK THE TCM GROUND(S) Key in OFF position. For FNR5 transaxles, measure the resistance between the TCM C2352a-1, circuit GD120 (BK/GN), harness side and ground; and between the TCM C2352a-9, circuit GD120 (BK/GN), harness side and ground. For 6-speed transaxles, measure the resistance between TCM C1533-9, circuit GD120 (BK/GN), harness side and ground. Are the resistances less than 5 ohms? YES : For FNR5 transaxles, go to B3 . For 6-speed transaxles, go to B4 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. B3 CHECK THE HS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE FNR5 TRANSAXLE TCM FOR AN OPEN Disconnect: TCM C2352b Measure the resistance between the TCM C2352b-1, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the TCM C2352b-13, 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 B5 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. B4 CHECK THE HS-CAN CIRCUITS BETWEEN THE DLC AND THE 6-SPEED TRANSAXLE TCM FOR AN OPEN Measure the resistance between the TCM C1533-14, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the TCM C1533-6, 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 B5 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. B5 CHECK FOR CORRECT TCM OPERATION Disconnect the TCM connector. Check for: corrosion damaged pins pushed-out pins Connect the TCM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? YES : INSTALL a new TCM. REFER to «AUTOMATIC TRANSAXLE/TRANSMISSION - AISIN AW21»(ref-291884) article or «AUTOMATIC TRANSAXLE/TRANSMISSION - FNR5»(ref-291885) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test C: The ABS module Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, 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.

Scheme 19

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Scheme 22

1. C1 CHECK THE ABS MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Key in OFF position. Disconnect: ABS Module C135 Key in ON position. Measure the voltage between the ABS module C135-8, circuit CBP19 (BN/WH), harness side and ground. Is the voltage greater than 10 volts? YES : Go to C2 . NO : VERIFY the smart junction box (SJB) fuse 28 (10A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. C2 CHECK THE ABS MODULE GROUND CIRCUIT FOR AN OPEN Key in OFF position. Measure the resistance between the ABS module C135-16, circuit GD123 (BK/GY), harness side and ground. Is the resistance less than 5 ohms? YES : Go to C3 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. C3 CHECK THE HS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE ABS MODULE FOR AN OPEN Measure the resistance between the ABS module C135-12, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the ABS module C135-13, 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 C4 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. C4 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-291936) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

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

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Supplemental Restraint System for schematic and connector information.

Note. The supplemental restraint system (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

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

Scheme 23

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1. D1 CHECK THE RCM CONNECTION Key in OFF position. Depower the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. Disconnect: RCM C310a Disconnect: RCM C310b Are RCM C310a pin 24, and RCM C310b pins 17 and 18 OK? YES : Go to D2 . NO : REPAIR the RCM connector pins as necessary. REPOWER the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. D2 CHECK THE RCM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Deactivate the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. Repower the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. Key in ON position. Measure the voltage between the RCM C310a-24, circuit CBP21 (BU/GY), harness side and ground. Is the voltage greater than 10 volts? YES : Go to D3 . NO : VERIFY the smart junction box (SJB) fuse 25 (7.5A) is OK. If OK, REPAIR the circuit. REACTIVATE the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. D3 CHECK THE RCM CASE GROUND Key in OFF position. Measure the resistance between the RCM case and a good chassis ground. Is the resistance less than 5 ohms? YES : Go to D4 . NO : REPAIR the RCM case ground as necessary. REACTIVATE the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. D4 CHECK THE HS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE RCM FOR AN OPEN Measure the resistance between the RCM C310b-18, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the RCM C310b-17, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances less than 5 ohms? YES : Go to D5 . NO : REPAIR the circuit in question. REACTIVATE the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. D5 CHECK FOR CORRECT RCM OPERATION Disconnect all the RCM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the RCM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? YES : INSTALL a new RCM. REACTIVATE the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. REACTIVATE the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test E: The 4X4 Control Module Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, 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.

Scheme 26

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1. E1 CHECK VOLTAGE TO THE 4X4 CONTROL MODULE Key in OFF position. Disconnect: 4X4 Control Module C3253 Key in ON position. Measure the voltage between the 4X4 control module C3253-5, circuit CBP19 (BN/WH), harness side and ground; and between the 4X4 control module C3253-6, circuit SBP15 (WH/RD), harness side and ground. Are the voltages greater than 10 volts? YES : Go to E2 . NO : VERIFY the smart junction box (SJB) fuse 20 (7.5A) or 28 (10A) is OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. E2 CHECK THE 4X4 CONTROL MODULE GROUND Key in OFF position. Measure the resistance between the 4X4 control module C3253-15, circuit GD126 (BK/WH), harness side and ground. Is the resistance less than 5 ohms? YES : Go to E3 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. E3 CHECK THE HS-CAN CIRCUITS BETWEEN THE 4X4 CONTROL MODULE AND THE DATA LINK CONNECTOR (DLC) FOR AN OPEN Measure the resistance between the 4X4 control module C3253-4, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the 4X4 control module C3253-12, 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 E4 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. E4 CHECK FOR CORRECT 4X4 CONTROL MODULE OPERATION Disconnect all the 4X4 control module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the 4X4 control 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 4X4 control module. REFER to «FOUR WHEEL DRIVE (4WD) SYSTEMS»(ref-291929) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

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

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Supplemental Restraint 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. The supplemental restraint system (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

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

Scheme 30

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1. F1 CHECK THE OCSM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Key in OFF position. Depower the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. Disconnect: OCSM C3159 Deactivate the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. Repower the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. Key in ON position. Measure the voltage between the OCSM C3159-1, circuit CBP24 (VT/GN), harness side and ground. Is the voltage greater than 10 volts? YES : Go to F2 . NO : VERIFY the smart junction box (SJB) fuse 24 (7.5A) is OK. If OK, REPAIR the circuit. REACTIVATE the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. F2 CHECK THE OCSM GROUND CIRCUIT FOR AN OPEN Key in OFF position. Measure the resistance between the OCSM C3159-14, circuit GD127 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? YES : Go to F3 . NO : REPAIR the circuit. REACTIVATE the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. F3 CHECK THE HS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE OCSM 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 : Go to F4 . NO : REPAIR the circuit. REACTIVATE the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. 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. Verify the concern is still present. Is the concern still present? YES : INSTALL a new OCSM. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. REACTIVATE the SRS. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. REACTIVATE the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test G: The Instrument Cluster (IC) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Instrument Cluster 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.

Scheme 34

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1. G1 CHECK THE HS-CAN TERMINATION RESISTANCE Key in OFF position. NOTE: Failure to disconnect the battery will result in false resistance readings. Disconnect the battery ground cable. Disconnect the scan tool cable from the data link connector (DLC). Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Is the resistance between 54 and 66 ohms? YES : Go to G2 . NO : Go to G4 .
2. G2 CHECK THE INSTRUMENT CLUSTER (IC) VOLTAGE SUPPLY Disconnect: IC C220 Connect the battery ground cable. Key in ON position. Measure the voltage between the IC, harness side and ground as follows: IC Connector-Pin Circuit C220-6 CBP23 (BN/YE) C220-19 SBP07 (WH/RD) C220-20 CBP20 (YE/VT) Are the voltages greater than 10 volts? YES : Go to G3 . NO : VERIFY the smart junction box (SJB) fuses 13 (10A), 23 (7.5A), or 27 (7.5A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. G3 CHECK THE IC GROUND CIRCUITS Key in OFF position. Measure the resistance between the IC, harness side and ground as follows: IC Connector-Pin Circuit C220-9 GD116 (BK/VT) C220-10 GD116 (BK/VT) Are the resistances less than 5 ohms? YES : Go to G5 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. G4 CHECK THE HS-CAN CIRCUITS BETWEEN THE DLC AND THE IC FOR AN OPEN Measure the resistance between the IC C220-15, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the IC C220-14, 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 G5 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. G5 CHECK THE MS-CAN CIRCUITS BETWEEN THE DLC AND THE INSTRUMENT CLUSTER (IC) FOR AN OPEN Measure the resistance between the IC C220-2, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the IC C220-1, 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 : Go to G6 . NO : REPAIR the circuit in question. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
6. G6 CHECK FOR CORRECT IC OPERATION Disconnect the IC connector. Check for: corrosion damaged pins pushed-out pins Connect the IC 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 IC. REFER to «INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES»(ref-291880) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test H: The Smart Junction Box (SJB) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Grounds for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Power Distribution/SJB for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network 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.

Scheme 38

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Scheme 41

1. H1 CHECK THE SJB VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Key in OFF position. Disconnect: SJB C2280a Key in ON position. Measure the voltage between the SJB C2280a-4, circuit SBB19 (BU/RD), harness side and ground. Is the voltage greater than 10 volts? YES : Go to H2 . NO : VERIFY the battery junction box (BJB) fuse 19 (40A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. H2 CHECK THE SJB GROUND CIRCUIT FOR AN OPEN Key in OFF position. Disconnect: SJB C2280d Measure the resistance between the SJB C2280d-6, circuit GD116 (BK/VT), harness side and ground. Is the resistance less than 5 ohms? YES : Go to H3 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. H3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE SJB FOR AN OPEN Measure the resistance between the SJB C2280d-17, circuit VDB06 (GY/OG) , harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the SJB C2280d-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 : Go to H4 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. H4 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-291878) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test I: The Heating Ventilation Air Conditioning (HVAC) Module Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, 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.

Scheme 42

Scheme 43

Scheme 44

Scheme 45

1. I1 CHECK THE HVAC VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Key in OFF position. Disconnect: HVAC Module C228a (Single-Zone) or C2356a (Dual-Zone) Key in ON position. Measure the voltage between the HVAC module C228a-26 (single-zone) or HVAC module C2356a-26 (dual-zone), circuit SBP07 (WH/RD) circuit CBP20 (YE/VT), harness side and ground. Measure the voltage between the HVAC module C228a-19 (single-zone) or HVAC module C2356a-19 (dual-zone), circuit CBP20 (YE/VT), harness side and ground. Are the voltages greater than 10 volts? YES : Go to I2 . NO : VERIFY smart junction box (SJB) fuses 13 (10A) or 27 (7.5A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. I2 CHECK THE HVAC GROUND CIRCUIT FOR AN OPEN Key in OFF position. Measure the resistance between the HVAC module C228a-1 (single-zone) or C2356a-1 (dual-zone), circuit GD116 (BK/VT) and ground. Is the resistance less than 5 ohms? YES : Go to I3 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. I3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE HVAC MODULE FOR AN OPEN Measure the resistance between the HVAC module C228a-12 (single-zone) or C2356a-12 (dual-zone), circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the HVAC module C228a-13 (single-zone) or C2356a-13 (dual-zone), circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? YES : Go to I4 . NO : REPAIR the circuit as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. I4 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-291887) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test J: The Parking Aid Module (PAM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Parking Aid 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.

Scheme 46

Scheme 47

Scheme 48

Scheme 49

1. J1 CHECK THE PAM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Key in OFF position. Disconnect: PAM C4014 Key in ON position. Measure the voltage between the PAM C4014-1, circuit CBP19 (BN/WH), harness side and ground. Is the voltage greater than 10 volts? YES : Go to J2 . NO : VERIFY the smart junction box (SJB) fuse 28 (10A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
2. J2 CHECK THE PAM GROUND CIRCUIT FOR AN OPEN Key in OFF position. Measure the resistance between the PAM C4014-4, circuit GD171 (BK/GY), harness side and ground. Is the resistance less than 5 ohms? YES : Go to J3 . NO : REPAIR the circuit. TEST the system for normal operation.
3. J3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE PAM FOR AN OPEN Measure the resistance between the PAM C4014-3, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the PAM C4014-11, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? YES : Go to J4 . NO : REPAIR the circuit in question. 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-291945) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test K: The Audio Control Module (ACM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Audio System/Navigation 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.

Scheme 50

Scheme 51

Scheme 52

Scheme 53

1. K1 CHECK THE ACM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Key in OFF position. Disconnect: ACM C290a (Base Audio/Audiophile) or C240a (THX® Audio/Navigation) Key in ON position. Measure the voltage between the base ACM C290a-1 (base audio/audiophile) or ACM C240a-1 (THX® audio/navigation), circuit SBP11 (BU/RD), harness side and ground; and between C290a-2 (base audio/audiophile) or C240a-2 (THX® audio/navigation), circuit CBP02 (GN), harness side and ground. Are the voltages greater than 10 volts? YES : Go to K2 . NO : VERIFY the smart junction box (SJB) fuse 12 (7.5A) or fuse 18 (20A) is OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. K2 CHECK THE ACM GROUND CIRCUIT FOR AN OPEN Key in OFF position. Measure the resistance between the ACM C290a-13 (Base Audio/Audiophile) or the ACM C240a-13 (THX® Audio/Navigation), circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? YES : Go to K3 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. K3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE ACM FOR AN OPEN Key in OFF position. Disconnect: ACM C290c (Base Audio/Audiophile) or C240c (THX® Audio/Navigation) Measure the resistance between C290c-15 (base audio/audiophile) or C240c-15 (THX® audio/navigation), circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the base ACM C290c-16 or the audio digital signal processing (DSP) module ACM C240c-16 (THX® audio/navigation), circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? YES : Go to K4 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. K4 CHECK FOR CORRECT ACM OPERATION Disconnect all the ACM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the ACM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? YES : INSTALL a new ACM. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-291889) article. TEST the system for normal operation. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST L: PINPOINT TEST L: THE AUDIO DIGITAL SIGNAL PROCESSING (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.

Scheme 54

Scheme 55

1. L1 CHECK THE DSP MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Key in OFF position. Disconnect: DSP Module C4326b Key in ON position. Measure the voltage between the DSP module, harness side and ground as follows: Connector-Pin Circuit C4326b-9 SBB21 (GY/RD) C4326b-10 SBB21 (GY/RD) C4326b-11 SBB20 (GN/RD) C4326b-12 SBB20 (GN/RD) Are the voltages greater than 10 volts? YES : Go to L2 . NO : VERIFY the battery junction box (BJB) fuse 20 (20A) or fuse 21 (20A) are OK. If OK, REPAIR the circuit in question. CONNECT the PCM. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. L2 CHECK THE DSP MODULE GROUND CIRCUITS FOR AN OPEN Key in OFF position. Measure the resistance between the DSP module amplifier, harness side and ground as follows: Connector-Pin Circuit C4326b-22 GD148 (BK/YE) C4326b-23 GD148 (BK/YE) C4326b-24 GD148 (BK/YE) Are the resistances less than 5 ohms? YES : Go to L3 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. L3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE DSP MODULE FOR AN OPEN Key in OFF position. Disconnect: DSP Module C4326c Measure the resistance between the DSP module C4326c-11, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the DSP module C4326c-12, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? YES : Go to L4 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. L4 CHECK FOR CORRECT DSP MODULE OPERATION Disconnect all the DSP module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the 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 DSP module. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-291889) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST M: THE SATELLITE DIGITAL AUDIO RECEIVER SYSTEM (SDARS) 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.

Scheme 56

Scheme 57

Scheme 58

Scheme 59

1. M1 CHECK THE SDARS MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Key in OFF position. Disconnect: SDARS Module C4300 Measure the voltage between the SDARS module C4300-9, circuit SBP15 (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 20 (7.5A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. M2 CHECK THE SDARS MODULE GROUND CIRCUIT FOR AN OPEN Measure the resistance between the SDARS module C4300-3, circuit GD148 (BK/YE), harness side and ground. Is the resistance less than 5 ohms? YES : Go to M3 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. M3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE SDARS MODULE FOR AN OPEN Measure the resistance between the SDARS module C4300-1, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the SDARS module C4300-7, 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 : Go to M4 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. M4 CHECK FOR CORRECT SDARS MODULE OPERATION Disconnect the SDARS module connector. Check for: corrosion damaged pins pushed-out pins Connect the SDARS 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 SDARS module. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-291889) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST N: THE DRIVER DOOR MODULE (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.

Scheme 60

Scheme 61

Scheme 62

Scheme 63

1. N1 CHECK THE DDM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Key in OFF position. Disconnect: DDM C568b Key in ON position. Measure the voltage between the DDM C568b -10, circuit SBP15 (WH/RD), harness side and ground. Is the voltage greater than 10 volts? YES : Go to N2 . NO : VERIFY the SJB fuse 20 (7.5A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. N2 CHECK THE DDM GROUND CIRCUIT FOR AN OPEN Measure the resistance between the DDM C568b-12, circuit GD126 (BK/WH), harness side and ground. Is the resistance less than 5 ohms? YES : Go to N3 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. N3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE DDM FOR AN OPEN Measure the resistance between the DDM C568a-12, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the DDM C568a-6, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? YES : Go to N4 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. N4 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-291878) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test O: The Driver Seat Module (DSM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Memory Seats 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.

Scheme 64

Scheme 65

Scheme 66

Scheme 67

1. O1 CHECK THE VOLTAGE SUPPLY CIRCUIT SBB15 (WH/RD) FOR AN OPEN Key in OFF position. Disconnect: DSM C3299c Key in ON position. Measure the voltage between the DSM C3299c-1, circuit SBB15 (WH/RD), harness side and ground. Is the voltage greater than 10 volts? YES : Go to O2 . NO : VERIFY the battery junction box (BJB) fuse 15 (10A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. O2 CHECK CIRCUIT GD126 (BK/WH) FOR AN OPEN Key in OFF position. Measure the resistance between the DSM C3299c-13, circuit GD126 (BK/WH), harness side and ground. Is the resistance less than 5 ohms? YES : Go to O3 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. O3 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE DSM FOR AN OPEN Measure the resistance between the DSM C3299c-11, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the DSM C3299c-12, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness side. Are the resistances less than 5 ohms? YES : Go to O4 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. O4 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-291878) article. TEST the system for normal operation. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST P: PINPOINT TEST P: THE DUAL CLIMATE CONTROL SEAT MODULE (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 article.

Note. The air bag warning lamp illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a SRS fault.

Note. The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Scheme 68

Scheme 69

Scheme 70

1. P1 VERIFY VEHICLE EQUIPMENT - SEAT SIDE AIR BAGS Inspect the vehicle for seat side air bags. Is the vehicle equipped with seat side air bags? YES : Go to P2 . NO : Go to P3 .
2. P2 CHECK THE DCSM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Key in OFF position. For vehicles with seat side air bags, carry out the following: Depower the SRS. Refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. Disconnect the driver seat side air bag module C3226. Connect the restraint system diagnostic tool (418-133) to the driver seat side air bag module C3226. Disconnect the passenger seat side air bag module C3227. Connect the restraint system diagnostic tool (418-133) to the passenger seat side air bag module C3227. Connect the battery ground cable. Disconnect: DCSM C3305a Key in ON position. Measure the voltage between the DCSM, harness side and ground as follows: Connector-Pin Circuit C3305a-E SBB11 (BU/RD) C3305a-F SBB12 (GN/RD) Are the voltages greater than 10 volts? YES : Go to P4 . NO : VERIFY the battery junction box (BJB) fuse 11 (30A) or fuse 12 (30A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. P3 CHECK THE DCSM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN Key in OFF position. Disconnect: DCSM C3305a Key in ON position. Measure the voltage between the DCSM, harness side and ground as follows: Connector-Pin Circuit C3305a-E SBB11 (BU/RD) C3305a-F SBB12 (GN/RD) Are the voltages greater than 10 volts? YES : Go to P4 . NO : VERIFY the battery junction box (BJB) fuse 11 (30A) and fuse 12 (30A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. P4 CHECK THE DCSM GROUND CIRCUIT FOR AN OPEN Key in OFF position. Measure the resistance between the DCSM C3305a-M, circuit GD139 (BK/YE), harness side and ground. Is the resistance less than 5 ohms? YES : Go to P5 . NO : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. P5 CHECK THE MS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE DCSM FOR AN OPEN Disconnect: DCSM C3305c Measure the resistance between the DCSM C3305c-1, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the DCSM C3305c-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 : Go to P6 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
6. P6 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-291875) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

Pinpoint Test Q: The Accessory Protocol Interface Module (APIM) Does Not Respond To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network 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.

Scheme 71

Scheme 72

Scheme 73

Scheme 74

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Scheme 76

1. Q1 CHECK THE APIM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Disconnect: APIM C3338 Key in ON position. Measure the voltage between the APIM C3338-1, circuit SBB13 (GY/RD), harness side and ground. Is the voltage greater than 10 volts? YES : Go to Q2 . NO : VERIFY the battery junction box (BJB) fuse 13 (10A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. Q2 CHECK THE APIM GROUND CIRCUIT FOR AN OPEN Key in OFF position. Measure the resistance between the APIM C3338-37, circuit GD148 (BK/YE), harness side and ground; and between the APIM C3338-38, circuit GD148 (BK/YE), harness side and ground. Are the resistances less than 5 ohms? YES : Go to Q3 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
3. Q3 CHECK THE HS-CAN CIRCUITS BETWEEN THE APIM AND THE DATA LINK CONNECTOR (DLC) FOR AN OPEN Measure the resistance between the APIM C3338-53, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the APIM C3338-54, 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 Q4 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
4. Q4 CHECK THE MS-CAN CIRCUITS BETWEEN THE DLC AND THE APIM FOR AN OPEN Measure the resistance between the APIM C3338-16, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the APIM C3338-17, 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 : Go to Q5 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
5. Q5 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. 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-291889) article. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.

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

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network 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.

Scheme 77

Scheme 78

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Scheme 80

1. R1 CHECK THE DATA LINK CONNECTOR (DLC) PINS FOR DAMAGE NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test. Key in OFF position. Disconnect the scan tool cable from the DLC. Inspect DLC pins 3 and 11 for damage. Are DLC pins 3 and 11 OK? YES : Go to R2 . NO : REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. R2 CHECK THE MS-CAN TERMINATION RESISTANCE Key in OFF position. NOTE: Failure to disconnect the battery will result in false resistance readings. Disconnect the battery ground 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 R5 . NO : Go to R3 .
3. R3 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 R7 . NO : Go to R4 .
4. R4 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 R9 . NO : Go to R7 .
5. R5 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 R6 . NO : Go to R28 .
6. R6 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect the battery ground cable. Key in ON position. 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 : VERIFY all module fuses are OK. If OK, REPEAT the network test with the scan tool.
7. R7 CHECK THE MS-CAN CIRCUITS BETWEEN THE DLC AND THE SMART JUNCTION BOX (SJB) FOR AN OPEN Disconnect: SJB C2280c Measure the resistance between the SJB C2280d-17, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the SJB C2280d-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 : Go to R8 . NO : REPAIR the circuit in question. CONNECT the battery ground cable. CONNECT the SJB. CLEAR the DTCs. REPEAT the network test with the scan tool.
8. R8 CHECK THE MS-CAN CIRCUITS BETWEEN THE DLC AND THE INSTRUMENT CLUSTER (IC) FOR AN OPEN Measure the resistance between the IC C220-2, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness side. Measure the resistance between the IC C220-1, 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 : VERIFY all module fuses are OK. If OK, CONNECT all modules. CONNECT the battery ground cable. REPEAT the network test with the scan tool. NO : REPAIR the circuit in question. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
9. R9 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE SJB DISCONNECTED Disconnect: SJB C2280d 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 R10 . NO : Go to R47 .
10. R10 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE IC DISCONNECTED Disconnect: IC 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 : Go to R11 . NO : Go to R48 .
11. R11 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE AUDIO CONTROL MODULE (ACM) DISCONNECTED Disconnect: ACM C290c (Base Audio/Audiophile) or C240c (THX® Audio/Navigation) 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 R12 . NO : Go to R49 .
12. R12 VERIFY VEHICLE EQUIPMENT - AUDIO DIGITAL SIGNAL PROCESSING (DSP) MODULE Inspect the vehicle for a DSP module. Is the vehicle equipped with a DSP module? YES : Go to R13 . NO : Go to R14 .
13. R13 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE DSP MODULE DISCONNECTED Disconnect: DSP Module C4326c 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 R14 . NO : Go to R50 .
14. R14 VERIFY VEHICLE EQUIPMENT - HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE Inspect the vehicle for a HVAC module. Is the vehicle equipped with a HVAC module? YES : Go to R15 . NO : Go to R16 .
15. R15 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE HVAC MODULE DISCONNECTED Disconnect: HVAC Module C228a (Single-Zone) or C2356a (Dual-Zone) 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 R16 . NO : Go to R51 .
16. R16 VERIFY VEHICLE EQUIPMENT - PARKING AID MODULE (PAM) Inspect the vehicle for a PAM. Is the vehicle equipped with a PAM? YES : Go to R17 . NO : Go to R18 .
17. R17 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE PAM DISCONNECTED Disconnect: PAM C4014 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 R18 . NO : Go to R52 .
18. R18 VERIFY VEHICLE EQUIPMENT - DRIVER DOOR MODULE (DDM) Inspect the vehicle for a DDM. Is the vehicle equipped with a DDM? YES : Go to R19 . NO : Go to R20 .
19. R19 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE DDM DISCONNECTED Disconnect: DDM C568a 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 R20 . NO : Go to R53 .
20. R20 VERIFY VEHICLE EQUIPMENT - DRIVER SEAT MODULE (DSM) Inspect the vehicle for a DSM. Is the vehicle equipped with a DSM? YES : Go to R21 . NO : Go to R22 .
21. R21 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE DSM DISCONNECTED Disconnect: DSM C3299c 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 R22 . NO : Go to R54 .
22. R22 VERIFY VEHICLE EQUIPMENT - DUAL CLIMATE CONTROL SEAT MODULE (DCSM) Inspect the vehicle for a DCSM. Is the vehicle equipped with a DCSM? YES : Go to R23 . NO : Go to R24 .
23. R23 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE DCSM DISCONNECTED Disconnect: DCSM C3305c 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 R24 . NO : Go to R55 .
24. R24 VERIFY VEHICLE EQUIPMENT - SATELLITE DIGITAL AUDIO RECEIVER SYSTEM (SDARS) MODULE Inspect the vehicle for a SDARS module. Is the vehicle equipped with a SDARS module? YES : Go to R25 . NO : Go to R26 .
25. R25 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE SDARS MODULE DISCONNECTED Disconnect: SDARS Module C4300 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 R26 . NO : Go to R56 .
26. R26 VERIFY VEHICLE EQUIPMENT - ACCESSORY PROTOCOL INTERFACE MODULE (APIM) Inspect the vehicle for an APIM. Is the vehicle equipped with an APIM? YES : Go to R27 . NO : REPAIR the circuit. CONNECT all modules. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
27. R27 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE APIM DISCONNECTED Disconnect: APIM C3338 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 battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : Go to R57 .
28. R28 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE SJB DISCONNECTED Disconnect: SJB C2280d 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. Are the resistances greater than 1,000 ohms? YES : Go to R47 . NO : Go to R29 .
29. R29 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE IC DISCONNECTED Disconnect: IC 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. Are the resistances greater than 1,000 ohms? YES : Go to R48 . NO : Go to R30 .
30. R30 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE ACM DISCONNECTED Disconnect: ACM C290c (Base Audio/Audiophile) or C240c (THX® Audio/Navigation) 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. Are the resistances greater than 1,000 ohms? YES : Go to R49 . NO : Go to R31 .
31. R31 VERIFY VEHICLE EQUIPMENT - DSP MODULE Inspect the vehicle for a DSP module. Is the vehicle equipped with a DSP module? YES : Go to R32 . NO : Go to R33 .
32. R32 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE DSP MODULE DISCONNECTED Disconnect: DSP Module C4326c 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. Are the resistances greater than 1,000 ohms? YES : Go to R50 . NO : Go to R33 .
33. R33 VERIFY VEHICLE EQUIPMENT - HVAC MODULE Inspect the vehicle for an HVAC module. Is the vehicle equipped with an HVAC module? YES : Go to R34 . NO : Go to R35 .
34. R34 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE HVAC MODULE DISCONNECTED Disconnect: HVAC Module C228a (Single-Zone) or C2356a (Dual-Zone) 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. Are the resistances greater than 1,000 ohms? YES : Go to R51 . NO : Go to R35 .
35. R35 VERIFY VEHICLE EQUIPMENT - PAM Inspect the vehicle for a PAM. Is the vehicle equipped with a PAM? YES : Go to R36 . NO : Go to R37 .
36. R36 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE PAM DISCONNECTED Disconnect: PAM C4014 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. Are the resistances greater than 1,000 ohms? YES : Go to R52 . NO : Go to R37 .
37. R37 VERIFY VEHICLE EQUIPMENT - DDM Inspect the vehicle for a DDM. Is the vehicle equipped with a DDM? YES : Go to R38 . NO : Go to R39 .
38. R38 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE DDM DISCONNECTED Disconnect: DDM C568a 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. Are the resistances greater than 1,000 ohms? YES : Go to R53 . NO : Go to R39 .
39. R39 VERIFY VEHICLE EQUIPMENT - DSM Inspect the vehicle for a DSM. Is the vehicle equipped with a DSM? YES : Go to R40 . NO : Go to R41 .
40. R40 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE DSM DISCONNECTED Disconnect: DSM C3299c 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. Are the resistances greater than 1,000 ohms? YES : Go to R54 . NO : Go to R41 .
41. R41 VERIFY VEHICLE EQUIPMENT - DUAL CLIMATE CONTROL SEAT MODULE (DCSM) Inspect the vehicle for a DCSM. Is the vehicle equipped with a DCSM? YES : Go to R42 . NO : Go to R43 .
42. R42 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE DCSM DISCONNECTED Disconnect: DCSM C3305c 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. Are the resistances greater than 1,000 ohms? YES : Go to R55 . NO : Go to R43 .
43. R43 VERIFY VEHICLE EQUIPMENT - SDARS MODULE Inspect the vehicle for a SDARS module. Is the vehicle equipped with a SDARS module? YES : Go to R44 . NO : Go to R45 .
44. R44 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE SDARS MODULE DISCONNECTED Disconnect: SDARS Module C4300 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. Are the resistances greater than 1,000 ohms? YES : Go to R56 . NO : Go to R45 .
45. R45 VERIFY VEHICLE EQUIPMENT - APIM Inspect the vehicle for an APIM. Is the vehicle equipped with an APIM? YES : Go to R46 . NO : REPAIR the circuit. CONNECT all modules. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
46. R46 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE APIM DISCONNECTED Disconnect: APIM C3338 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. Are the resistances greater than 1,000 ohms? YES : Go to R57 . NO : REPAIR the circuit. CONNECT all modules. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
47. R47 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-291878) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
48. R48 CHECK FOR CORRECT IC OPERATION Disconnect the IC connector. Check for: corrosion damaged pins pushed-out pins Connect the IC 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 IC. REFER to «INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES»(ref-291880) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
49. R49 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-291889) article. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
50. R50 CHECK FOR CORRECT DSP MODULE OPERATION Disconnect all the DSP module connectors. Check for: corrosion damaged pins pushed-out pins Connect all the 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 DSP module. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-291889) article. CONNECT all modules. CONNECT the battery ground cable. 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 the battery ground cable. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.
51. R51 CHECK FOR CORRECT HEATING VENTILATION AIR CONDITIONING (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-291887) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
52. R52 CHECK FOR CORRECT PAM OPERATION Disconnect all the PAM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the PAM 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 PAM. REFER to «PARKING AID»(ref-291945) article. CONNECT all modules. CONNECT the battery ground cable. 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 the battery ground cable. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.
53. R53 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-291878) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
54. R54 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-291878) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
55. R55 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-291875) article. CONNECT all modules. CONNECT the battery ground cable. 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 the battery ground cable. CONNECT all modules. CLEAR the DTCs. REPEAT the network test with the scan tool.
56. R56 CHECK FOR CORRECT SDARS MODULE OPERATION Disconnect the SDARS module connector. Check for: corrosion damaged pins pushed-out pins Connect the SDARS 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 SDARS module. REFER to «INFORMATION AND ENTERTAINMENT SYSTEMS»(ref-291889) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
57. R57 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-291889) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST S: INTERMITTENT NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ONE OR MORE MODULES ARE NOT RESPONDING DURING NETWORK TEST

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

1. S1 CHECK THE DATA LINK CONNECTOR (DLC) PINS FOR DAMAGE Key in OFF position. Disconnect the scan tool cable from the DLC. Inspect DLC pins 3 and 11 for damage. Are DLC pins 3 and 11 OK? YES : Go to S2 . NO : REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. S2 CHECK THE MS-CAN TERMINATION RESISTANCE NOTE: Failure to disconnect the battery will result in false resistance readings. Disconnect the battery ground 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 S3 . NO : Go to «Pinpoint Test Q»(ref-291879-S11691815812008073000000) .
3. S3 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 S4 . NO : Go to «Pinpoint Test Q»(ref-291879-S11691815812008073000000) .
4. S4 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect the battery ground cable. Key in ON position. 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 : Go to S5 .
5. S5 VERIFY VEHICLE EQUIPMENT - DRIVER SEAT MODULE (DSM) Inspect the vehicle for a DSM. Is the vehicle equipped with a DSM? YES : Go to S6 . NO : Go to S7 .
6. S6 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DSM DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: BJB Fuse 15 (10A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuse. Go to «Pinpoint Test O»(ref-291879-S34579521992008073000000) . NO : INSTALL the removed fuse. Go to S7 .
7. S7 VERIFY VEHICLE EQUIPMENT - DRIVER DOOR MODULE (DDM) AND/OR SATELLITE DIGITAL AUDIO RECEIVER SYSTEM (SDARS) MODULE Inspect the vehicle for a DDM and/or SDARS module. Is the vehicle equipped with a DDM, SDARS module, or both? YES : Go to S8 . NO : Go to S10 .
8. S8 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DDM AND/OR SDARS MODULE DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: SJB Fuse 20 (7.5A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuse. For vehicles equipped with BOTH a DDM and SDARS module, go to S9 . For vehicles equipped with a DDM only, go to «Pinpoint Test N»(ref-291879-S33847199922008073000000) . For vehicles equipped with a SDARS module only, go to «Pinpoint Test M»(ref-291879-S20406657672008073000000) . NO : INSTALL the removed fuse. Go to S10 .
9. S9 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DDM DISCONNECTED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: DDM C568b Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : CONNECT the DDM. Go to «Pinpoint Test N»(ref-291879-S33847199922008073000000) . NO : CONNECT the DDM. Go to «Pinpoint Test M»(ref-291879-S20406657672008073000000) .
10. S10 VERIFY VEHICLE EQUIPMENT - HVAC MODULE Inspect the vehicle for a HVAC module. Is the vehicle equipped with a HVAC module? YES : Go to S11 . NO : Go to S13 .
11. S11 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE HVAC MODULE DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: SJB Fuse 13 (10A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuse. Go to «Pinpoint Test I»(ref-291879-S24821493812008073000000) . NO : Go to S12 .
12. S12 VERIFY VEHICLE EQUIPMENT - ACCESSORY PROTOCOL INTERFACE MODULE (APIM) Inspect the vehicle for an APIM. Is the vehicle equipped with an APIM? YES : Go to S13 . NO : Go to S14 .
13. S13 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE APIM DISCONNECTED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: Battery Junction Box (BJB) Fuse 13 (10A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : Go to S14 . NO : CONNECT the APIM. Go to «Pinpoint Test Q»(ref-291879-S11691815812008073000000) .
14. S14 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE INSTRUMENT CLUSTER (IC) DISCONNECTED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: IC C220 Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : CONNECT the IC. Go to «Pinpoint Test G»(ref-291879-S07333116802008073000000) . NO : Go to S15 .
15. S15 VERIFY VEHICLE EQUIPMENT - DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) Inspect the vehicle for a DCSM. Is the vehicle equipped with a DCSM? YES : Go to S16 . NO : Go to S17 .
16. S16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DCSM DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: BJB Fuses 11 (30A) and 12 (30A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuses. Go to «Pinpoint Test P»(ref-291879-S08786190152008073000000) . NO : Go to S17 .
17. S17 VERIFY VEHICLE EQUIPMENT - AUDIO DIGITAL SIGNAL PROCESSING (DSP) MODULE Inspect the vehicle for an audio DSP module. Is the vehicle equipped with an audio DSP module? YES : Go to S17 . NO : Go to S18 .
18. S18 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE AUDIO DSP MODULE DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: BJB Fuses 20 (20A) and 21 (20A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuses. Go to «Pinpoint Test L»(ref-291879-S36319126622008073000000) . NO : Go to S19 .
19. S19 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SJB DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: BJB Fuse 19 (40A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuse. Go to «Pinpoint Test H»(ref-291879-S00030800812008073000000) . NO : Go to S20 .
20. S20 VERIFY VEHICLE EQUIPMENT - PARKING AID MODULE (PAM) AND/OR 4X4 CONTROL MODULE Inspect the vehicle for a PAM and/or 4X4 control module. Is the vehicle equipped with a PAM and/or 4X4 control module? YES : Go to S21 . NO : Go to S23 .
21. S21 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PAM AND/OR 4X4 CONTROL MODULE DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: SJB Fuse 28 (10A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuse. For vehicles equipped with BOTH a PAM and 4X4 control module, go to S22 . For vehicles equipped with a PAM only, go to «Pinpoint Test J»(ref-291879-S31145373022008073000000) . For vehicles equipped with a 4X4 control module only, go to «Pinpoint Test E»(ref-291879-S32188285552008073000000) . NO : Go to S22 .
22. S22 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 will revert back to the prior run network test results. Disconnect: 4X4 Control Module C3253 Enter the following diagnostic mode on the diagnostic 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 E»(ref-291879-S32188285552008073000000) . NO : CONNECT the 4X4 control module. Go to «Pinpoint Test J»(ref-291879-S31145373022008073000000) .
23. S23 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE AUDIO CONTROL MODULE (ACM) DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: SJB Fuse 12 (7.5A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuse. Go to «Pinpoint Test K»(ref-291879-S12636119432008073000000) . NO : INSTALL the removed fuse. Go to S24 .
24. S24 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ACM DISCONNECTED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: ACM C240c (Base Audio/Audiophile) or C290c (THX® Audio/Navigation) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : CONNECT the ACM. Go to «Pinpoint Test K»(ref-291879-S12636119432008073000000) . NO : CONNECT the ACM. An intermittent fault is not present. Go to «Pinpoint Test Q»(ref-291879-S11691815812008073000000) .

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

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network 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.

Scheme 81

Scheme 82

Scheme 83

1. T1 CHECK THE DATA LINK CONNECTOR (DLC) PINS FOR DAMAGE NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test. Key in OFF position. 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 T2 . NO : REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. T2 CHECK THE HS-CAN TERMINATION RESISTANCE Key in OFF position. NOTE: Failure to disconnect the battery will result in false resistance readings. Disconnect the battery ground 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 T3 . NO : Go to T5 .
3. T3 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 T4 . NO : Go to T21 .
4. T4 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect the battery ground cable. Key in ON position. 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 : The CAN has tested within specifications. VERIFY the scan tool operation on a substitute vehicle, and REPEAT the network test on the suspect vehicle.
5. T5 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 T6 . NO : Go to T9 .
6. T6 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 T7 . NO : Go to T8 .
7. T7 CHECK THE HS-CAN CIRCUITS BETWEEN THE DLC AND THE PCM FOR AN OPEN 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 : Go to T31 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
8. T8 CHECK THE HS-CAN CIRCUITS BETWEEN THE DLC AND THE INSTRUMENT CLUSTER (IC) FOR AN OPEN Measure the resistance between the IC C220-15, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side. Measure the resistance between the IC C220-14, 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 T35 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
9. T9 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 T11 . NO : Go to T10 .
10. T10 CHECK THE HS-CAN CIRCUITS BETWEEN THE DLC AND THE PCM FOR AN OPEN 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 : The CAN has tested within specifications. VERIFY the scan tool operation on a substitute vehicle, and REPEAT the network test on the suspect vehicle. NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
11. T11 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 : Go to T12 . NO : Go to T31 .
12. T12 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 : Go to T13 . NO : Go to T32 .
13. T13 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE TRANSMISSION CONTROL MODULE (TCM) DISCONNECTED Disconnect: TCM C2352b (FNR5 Transaxle) Disconnect: TCM C1533 (6-Speed Transaxle) 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 T14 . NO : Go to T33 .
14. T14 VERIFY VEHICLE EQUIPMENT - 4X4 CONTROL MODULE Inspect the vehicle for a 4X4 control module. Is the vehicle equipped with a 4X4 control module? YES : Go to T15 . NO : Go to T16 .
15. T15 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE 4X4 CONTROL MODULE DISCONNECTED Disconnect: 4X4 Control Module C3253 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 T16 . NO : Go to T34 .
16. T16 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE INSTRUMENT CLUSTER (IC) DISCONNECTED Disconnect: IC 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 : Go to T17 . NO : Go to T35 .
17. T17 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) DISCONNECTED Disconnect: 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 : Go to T18 . NO : Go to T36 .
18. T18 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE RESTRAINTS CONTROL MODULE (RCM) DISCONNECTED Disconnect: 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 : Go to T19 . NO : Go to T37 .
19. T19 VERIFY VEHICLE EQUIPMENT - ACCESSORY PROTOCOL INTERFACE MODULE (APIM) Inspect the vehicle for an APIM. Is the vehicle equipped with an APIM? YES : Go to T20 . NO : REPAIR the circuit. CONNECT all modules. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
20. T20 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE APIM DISCONNECTED Disconnect: APIM C3338 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 battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : Go to T38 .
21. T21 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 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 T31 . NO : Go to T22 .
22. T22 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 : Go to T32 . NO : Go to T23 .
23. T23 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE TCM DISCONNECTED Disconnect: TCM C2352b (FNR5 Transaxle) Disconnect: TCM C1533 (6-Speed Transaxle) Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances greater than 1,000 ohms? YES : Go to T33 . NO : Go to T24 .
24. T24 VERIFY VEHICLE EQUIPMENT - 4X4 CONTROL MODULE Inspect the vehicle for a 4X4 control module. Is the vehicle equipped with a 4X4 control module? YES : Go to T25 . NO : Go to T26 .
25. T25 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE 4X4 CONTROL MODULE DISCONNECTED Disconnect: 4X4 Control Module C3253 Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances greater than 1,000 ohms? YES : Go to T34 . NO : Go to T26 .
26. T26 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE IC DISCONNECTED Disconnect: IC 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 : Go to T35 . NO : Go to T27 .
27. T27 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE OCSM DISCONNECTED Disconnect: 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. Are the resistances greater than 1,000 ohms? YES : Go to T36 . NO : Go to T28 .
28. T28 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE RCM DISCONNECTED Disconnect: 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. Are the resistances greater than 1,000 ohms? YES : Go to T37 . NO : Go to T29 .
29. T29 VERIFY VEHICLE EQUIPMENT - APIM Inspect the vehicle for an APIM. Is the vehicle equipped with an APIM? YES : Go to T30 . NO : REPAIR the circuit. CONNECT all modules. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
30. T30 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE APIM DISCONNECTED Disconnect: APIM C3338 Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and the DLC C251-14, circuit VDB05 (WH), harness side. Are the resistances greater than 1,000 ohms? YES : Go to T38 . NO : REPAIR the circuit. CONNECT all modules. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
31. T31 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 - 2.3L»(ref-291907) article, «ELECTRONIC ENGINE CONTROLS - 3.0L (4V)»(ref-291913) article or «ELECTRONIC ENGINE CONTROLS - 3.5L»(ref-291920) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
32. T32 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-291936) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
33. T33 CHECK FOR CORRECT TCM OPERATION Disconnect the TCM connector. Check for: corrosion damaged pins pushed-out pins Connect the TCM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? YES : INSTALL a new TCM. REFER to «AUTOMATIC TRANSAXLE/TRANSMISSION - AISIN AW21»(ref-291884) article or «AUTOMATIC TRANSAXLE/TRANSMISSION - FNR5»(ref-291885) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
34. T34 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-291929) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
35. T35 CHECK FOR CORRECT IC OPERATION Disconnect the IC connector. Check for: corrosion damaged pins pushed-out pins Connect the IC 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 IC. REFER to «INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES»(ref-291880) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
36. T36 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-291881) article. CONNECT the modules. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : The system is operating correctly at this time. CONNECT all modules. CONNECT the battery ground cable. The concern may have been caused by a loose or corroded connector. REPOWER the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CLEAR the DTCs. REPEAT the network test with the scan tool.
37. T37 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-291881) article. CONNECT all modules. CONNECT the battery ground cable. 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. REPOWER the SRS. REFER to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-291881) article. CONNECT all modules. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
38. T38 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-291889) article. CONNECT all modules. CONNECT the battery ground cable. 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. CONNECT the battery ground cable. CLEAR the DTCs. REPEAT the network test with the scan tool.

PINPOINT TEST U: INTERMITTENT NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ONE OR MORE MODULES ARE NOT RESPONDING DURING NETWORK TEST

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

1. U1 CHECK THE DATA LINK CONNECTOR (DLC) PINS FOR DAMAGE Key in OFF position. 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 U2 . NO : REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. U2 CHECK THE HS-CAN TERMINATION RESISTANCE Key in OFF position. NOTE: Failure to disconnect the battery will result in false resistance readings. Disconnect the battery ground 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 U3 . NO : Go to «Pinpoint Test S»(ref-291879-S33128747252008073000000) .
3. U3 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 U4 . NO : Go to «Pinpoint Test S»(ref-291879-S33128747252008073000000) .
4. U4 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE Connect the battery ground cable. Key in ON position. 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 in question. CLEAR the DTCs. REPEAT the network test with the scan tool. NO : Go to U5 .
5. U5 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 will 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 will revert back to the prior run network test results. Disconnect: BJB Fuses 23 (10A), 26 (7.5A), 42 (15A (3.0L, 3.5L) or 47 (15A) (2.3L) Enter the following diagnostic mode on the diagnostic 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»(ref-291879-S16791279502008073000000) . NO : INSTALL the removed fuses. Go to U6 .
6. U6 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ABS MODULE AND 4X4 CONTROL MODULE (IF EQUIPPED) DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: SJB Fuses 28 (20A) and 20 (7.5A) (if equipped) Enter the following diagnostic mode on the diagnostic 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 4X4 control module, go to U7 . If the vehicle is not equipped with a 4X4 control module, go to «Pinpoint Test C»(ref-291879-S08359504232008073000000) . NO : INSTALL the removed fuses. Go to U8 .
7. U7 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ABS MODULE DISCONNECTED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: ABS Module C135 Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : CONNECT the ABS module. Go to «Pinpoint Test C»(ref-291879-S08359504232008073000000) . NO : CONNECT the ABS module. Go to «Pinpoint Test E»(ref-291879-S32188285552008073000000) .
8. U8 VERIFY VEHICLE EQUIPMENT - AUTOMATIC TRANSAXLE Inspect the vehicle for an automatic transaxle. Is the vehicle equipped with an automatic transaxle? YES : Go to U9 . NO : Go to U10 .
9. U9 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE TRANSMISSION CONTROL MODULE (TCM) DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: BJB Fuses 16 (15A) and 23 (10A) (FNR5 Transaxle Only) or Fuse 26 (7.5A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuses. Go to «Pinpoint Test B»(ref-291879-S24259465502008073000000) . NO : INSTALL the removed fuses. Go to U10 .
10. U10 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE INSTRUMENT CLUSTER (IC) DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: SJB Fuses 13 (10A), 23 (7.5A) and 27 (7.5A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuses. Go to «Pinpoint Test G»(ref-291879-S07333116802008073000000) . NO : INSTALL the removed fuses. Go to U11 .
11. U11 VERIFY VEHICLE EQUIPMENT - ACCESSORY PROTOCOL INTERFACE MODULE (APIM) Inspect the vehicle for an APIM. Is the vehicle equipped with an APIM? YES : Go to U12 . NO : Go to U13 .
12. U12 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE APIM DISCONNECTED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: APIM C3338 Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : CONNECT the APIM. Go to «Pinpoint Test Q»(ref-291879-S11691815812008073000000) . NO : Go to U13 .
13. U13 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RESTRAINTS CONTROL MODULE (RCM) DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: SJB Fuse 25 (7.5A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuse. Go to «Pinpoint Test D»(ref-291879-S03680811342008073000000) . NO : INSTALL the removed fuse. Go to U14 .
14. U14 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) DISABLED NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network test results. Disconnect: SJB Fuse 24 (7.5A) Enter the following diagnostic mode on the diagnostic tool: Network Test Repeat the network test. Do all other modules pass the network test? YES : INSTALL the removed fuse. Go to «Pinpoint Test F»(ref-291879-S16959302832008073000000) . NO : INSTALL the removed fuse. An intermittent fault is not present. Go to «Pinpoint Test S»(ref-291879-S33128747252008073000000) .

Pinpoint Test V: No Power To The Scan Tool

Refer to SYSTEM WIRING DIAGRAMS article for Fusion, SYSTEM WIRING DIAGRAMS article for Milan or SYSTEM WIRING DIAGRAMS article for MKZ, Module Communications Network for schematic and connector information.