Module Communications Network System: Diagnosis Ford Escort V рестайлинг 2

INSPECTION & VERIFICATION

Note. Following inspection and verification should be followed for diagnosing module communications network.

1. Verify customer's original problem. Inspect vehicle for any obvious electrical component wiring or connector damage.
2. Inspect pins in 16-pin Data Link Connector (DLC) for damage. see scheme 1 The DLC is located below driver's side of instrument panel, to the left of steering column. If pins are okay, perform DATA LINK DIAGNOSTICS. If pins are damaged, repair as necessary and perform DATA LINK DIAGNOSTICS.

DATA LINK DIAGNOSTICS

1. Connect New Generation Star (NGS) scan tester on Data Link Connector (DLC) and perform proper hook-up procedure. See «EQUIPMENT HOOK-UP»(ref-29099-S16657735602001101500000) .
2. Turn ignition switch to ON position. Rotate dial on scan tester to menu item DIAGNOSTIC DATA LINK and press trigger. A test will be performed on the BUS (circuits No. 914 and 915) for the module communications network and the ISO 9141 communication link circuit No. 70. This is the Orange wire that goes between terminal No. 7 on DLC and Remote Anti-theft Personality (RAP) module and Anti-lock Brake (ABS) module.
3. If scan tester displays CKT 914 (+) = SYSTEM PASSED and CKT 915 (-) = 0000, module communications network is okay. If scan tester displays CKT 70 = SYSTEM PASSED, ISO 9141 communication link is operating properly.
4. If scan tester displays CKT 914 (+) = 000000001 and CKT 915(-) = 000000001, go to TEST C: POWERTRAIN CONTROL MODULE (PCM) DOES NOT RESPOND TO NGS under «TESTING»(ref-29099-S27761095912001101500000) .
5. If scan tester displays ABS NO RESPONSE/NOT EQUIPPED, go to TEST A: ANTI-LOCK CONTROL SYSTEM DOES NOT RESPOND TO NGS under «TESTING»(ref-29099-S27761095912001101500000) .
6. If scan tester displays RAP NO RESPONSE/NOT EQUIPPED, go to TEST B: REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DOES NOT RESPOND TO NGS under «TESTING»(ref-29099-S27761095912001101500000) .
7. If scan tester displays PCM NO RESPONSE ON CKT 914 (BUS+) OR CKT 915 (BUS-), go to TEST C: POWERTRAIN CONTROL MODULE (PCM) DOES NOT RESPOND TO NGS under «TESTING»(ref-29099-S27761095912001101500000) .
8. If scan tester displays CKT 70 = 00000000F, go to TEST D: NO MODULE/NETWORK COMMUNICATION.

RETRIEVING DIAGNOSTIC TROUBLE CODES

Note. Procedure may be used for retrieving continuous Diagnostic Trouble Codes (DTCs).

1. Connect New Generation Star (NGS) scan tester to Data Link Connector (DLC) and perform proper hook-up procedure. See «EQUIPMENT HOOK-UP»(ref-29099-S16657735602001101500000) . NOTE: If instructed to retrieve Diagnostic Trouble Codes (DTCs) from a specified test procedure, ensure ignition is in proper position as listed in test procedure or the test will fail.
2. Turn ignition switch to RUN position unless otherwise instructed by specified test procedure. Rotate dial on scan tester to DIAGNOSTIC DATA LINK menu and press trigger.
3. Rotate dial on scan tester to highlight the desired module you wish to access. Ensure DIAGNOSTIC TEST MODES is highlighted and press trigger.
4. Rotate dial on scan tester to highlight RETRIEVE/CLEAR CONTINUOUS DTC and press trigger. Press button No. 3 to start.
5. Record all Diagnostic Trouble Codes (DTCS) that are displayed for specified module. Proceed to DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS for DTC identification and reference for proper DTC testing procedure. DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS are listed after «TESTING»(ref-29099-S27761095912001101500000) in this article.

CLEARING DIAGNOSTIC TROUBLE CODES

1. Connect New Generation Star (NGS) scan tester on Data Link Connector (DLC) and perform proper hook-up procedure. See «EQUIPMENT HOOK-UP»(ref-29099-S16657735602001101500000) . NOTE: If instructed to clear Diagnostic Trouble Codes (DTCs) from a specified test procedure, ensure ignition is in proper position as listed in test procedure or the test will fail.
2. Turn ignition switch to RUN position unless otherwise instructed by specified test procedure. Rotate dial on scan tester to DIAGNOSTIC DATA LINK menu and press trigger.
3. Rotate dial on scan tester to highlight the desired module you wish to access. Ensure DIAGNOSTIC TEST MODES is highlighted and press trigger.
4. Rotate dial on scan tester to highlight RETRIEVE/CLEAR CONTINUOUS DTC and press trigger. Press button No. 3 to start.
5. To clear an individual DTC from a selected module, rotate dial on scan tool to highlight the DTC to be cleared. Press button No. 8. This will clear only that DTC from that module.
6. To clear all DTCs from a selected module, press button No. 7. This clears all DTCs from that module.

ON-DEMAND SELF-TEST

Note. On-Demand Self-Test may be used to verify operation of a selected module.

1. Connect New Generation Star (NGS) scan tester on Data Link Connector (DLC) and perform proper hook-up procedure. See «EQUIPMENT HOOK-UP»(ref-29099-S16657735602001101500000) . NOTE: If instructed to perform On-Demand Self-Test from a specified test procedure, ensure ignition is in proper position as listed in test procedure or the test will fail.
2. Turn ignition switch to RUN position unless otherwise instructed by specified test procedure. Rotate dial on scan tester to DIAGNOSTIC DATA LINK menu and press trigger.
3. Rotate dial on scan tester to highlight the desired module to be tested and press trigger. Ensure DIAGNOSTIC TEST MODES is highlighted and press trigger.
4. Rotate dial on scan tester to highlight ON-DEMAND SELF-TEST and press trigger. Press button No. 3 to start the test. Prepare vehicle for entry condition as specified for each module. Press trigger. Record any Diagnostic Trouble Codes (DTCs) that are displayed.

DIAGNOSTIC COMMAND

Note. This procedure may be used to verify operation of output circuitry for selected module being tested.

1. Connect New Generation Star (NGS) scan tester on Data Link Connector (DLC) and perform proper hook-up procedure. See «EQUIPMENT HOOK-UP»(ref-29099-S16657735602001101500000) . NOTE: If instructed to retrieve PID from a specified test procedure, ensure ignition is in proper position as listed in test procedure or the test will fail.
2. Turn ignition switch to RUN position unless otherwise instructed by specified test procedure. Rotate dial on scan tester to DIAGNOSTIC DATA LINK menu and press trigger.
3. Rotate dial on scan tester to highlight the desired module you wish to access and press trigger. Rotate dial on scan tester to highlight ACTIVE/COMMAND MODES and press trigger.
4. Rotate dial on scan tester to selected command and press trigger.

DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS

ANTI-LOCK BRAKE (ABS) CONTROL MODULE DTC DEFINITIONS

REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DTC DEFINITIONS

POWERTRAIN CONTROL MODULE (PCM) DTC DEFINITIONS

TEST A: ANTI-LOCK CONTROL SYSTEM DOES NOT RESPOND TO NGS

1. Turn ignition off. Disconnect ABS control module 40-pin connector (located under front passenger's seat). Inspect anti-lock brake module connector for damage. If anti-lock brake module connector is okay, go to next step. If anti-lock brake module connector is damaged, repair as necessary.
2. Using 40/60-Pin ABS Adapter Cable (007-00103), connect EEC-IV 60-Pin Breakout Box (007-00033) to ABS control module 40-pin connector. Measure resistance between breakout box pin No. 13 and DLC pin No. 7 (Orange wire). see scheme 1 If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair Orange wire.
3. Disconnect RAP module 26-pin connector C405. On sedans, RAP module is behind right rear quarter panel. On station wagons, RAP module is behind left rear quarter panel. Measure resistance between DLC pin No. 7 (Orange wire) and ground. If resistance is greater than 10 k/ohms, replace ABS control module. If resistance is 10 k/ohms or less, repair Orange wire.

TEST B: REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DOES NOT RESPOND TO NGS

1. Turn ignition off. Disconnect RAP module 26-pin connector C405. On sedans, RAP module is behind right rear quarter panel. On station wagons, RAP module is behind left rear quarter panel. Inspect RAP module 26-pin connector C405 for damage. If RAP module 26-pin connector is okay, go to next step. If RAP module 26-pin connector is damaged, repair as necessary.
2. Measure resistance in Orange wire between RAP module 26-pin connector C405 pin No. 3 and DLC pin No. 7. see scheme 1and (Scheme 1). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair Orange wire.
3. Disconnect ABS control module 40-pin connector (located under front passenger's seat). Measure resistance between DLC pin No. 7 and ground. If resistance is greater than 10 k/ohms, replace RAP module. If resistance is 10 k/ohms or less, repair Orange wire.

Scheme 1

TEST C: POWERTRAIN CONTROL MODULE (PCM) DOES NOT RESPOND TO NGS

Note. Circuit No. 914 (White/Blue wire) and circuit No. 915 (Black/Blue wire) are a twisted pair and cannot be repaired. They must be replaced as an assembly.

1. Connect New Generation Star (NGS) scan tester to Data Link Connector (DLC) and perform proper hook-up procedure. See «EQUIPMENT HOOK-UP»(ref-29099-S16657735602001101500000) . Retrieve continuous DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES under «COMMUNICATION NETWORK DIAGNOSTICS»(ref-29099-S15730693782001101500000) . If DTC 0001 is retrieved for circuit No. 914 (White/Blue wire), go to next step. If DTC 0001 is not retrieved for circuit No. 914 (White/Blue wire), go to step 4).
2. Turn ignition off. Disconnect PCM 104-pin connector C212 (located under center console). Inspect PCM 104-pin connector for damage. Inspect DLC for damage. If both connectors are okay, go to next step. If connector(s) are damaged, repair as necessary.
3. Connect EEC-V 104-Pin Breakout Box (014-00950) to PCM 104-pin connector C212. Measure resistance between breakout box pin No. 16 and DLC pin No. 2 (White/Blue wire). Measure resistance between breakout box pin No. 16 and ground. If resistance is less than 5 ohms between breakout box and DLC, and greater than 10 k/ohms between breakout box and ground, go to next step. If resistance(s) are not as specified, replace harness assembly as necessary.
4. Turn ignition off. Disconnect PCM 104-pin connector C212 (located under center console). Inspect PCM 104-pin connector for damage. Inspect Data Link Connector (DLC) for damage. If both connectors are okay, go to next step. If connector(s) are damaged, repair as necessary.
5. Connect EEC-V 104-Pin Breakout Box (014-00950) to PCM 104-pin connector C212. Measure resistance between breakout box pin No. 15 and DLC pin No. 10 (Black/Blue wire). Measure resistance between breakout box pin No. 15 and ground. If resistance is less than 5 ohms between breakout box and DLC, and greater than 10 k/ohms between breakout box and ground, go to next step. If resistance(s) are not as specified, replace harness assembly as necessary.
6. Measure resistance between breakout box pin No. 13 and DLC pin No. 13 (Pink/Green wire). Measure resistance between breakout box pin No. 13 and ground. If resistance is less than 5 ohms between breakout box and DLC, and greater than 10 k/ohms between breakout box and ground, replace PCM. If resistance(s) are not as specified, repair Pink/Green wire.

TEST D: NO MODULE/NETWORK COMMUNICATION

1. Turn ignition off. Inspect Data Link Connector (DLC) for damage. If connector is okay, go to next step. If DLC is damaged, repair as necessary.
2. Check condition of 10-amp OBD II fuse in engine compartment fuse box. If fuse is okay, go to next step. If fuse is blown, replace fuse. If new fuse does not blow, go to next step. If new fuse blows, repair Green wire.
3. Measure voltage between DLC pin No. 16 (Green wire) and ground. see scheme 1 If voltage is greater than 10 volts, go to next step. If voltage is less than 10 volts, repair Green wire.
4. Measure resistance between DLC pin No. 4 (Black wire) and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair Black wire.
5. Measure resistance between DLC pin No. 5 (Blue/Orange wire) and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair Blue/Orange wire.
6. Disconnect RAP module 26-pin connector C405. On sedans, RAP module is behind right rear quarter panel. On station wagons, RAP module is behind left rear quarter panel. Disconnect ABS control module 40-pin connector (located under front passenger's seat). Using 40/60-Pin ABS Adapter Cable (007-00103), connect EEC-IV60-Pin Breakout Box (007-00033) to ABS control module 40-pin connector. Measure resistance between breakout box pin No. 13 and DLC pin No. 7 (Orange wire). Measure resistance between DLC pin No. 7 and ground.
7. If resistance is less than 5 ohms between breakout box and DLC, and greater than 10 k/ohms between DLC and ground, reconnect RAP module connector and go to next step. If resistance(s) are not as specified, repair Orange wire.
8. Measure resistance between DLC pin No. 7 and ground. If resistance is greater than 10 k/ohms, replace ABS module. If resistance is 10 k/ohms or less, replace RAP module.

Data Link Connectors Wiring Diagram. Scheme 2

Ground Distribution Wiring Diagram (1 Of 3). Scheme 3

Ground Distribution Wiring Diagram (2 Of 3). Scheme 4

Ground Distribution Wiring Diagram (3 Of 3). Scheme 5

Power Distribution Wiring Diagram (1 Of 2). Scheme 6

Power Distribution Wiring Diagram (2 Of 2). Scheme 7