INSPECTION & VERIFICATION
- Verify customer complaint by operating system in question. Inspect vehicle for any obvious electrical component wiring or connector damage. Inspect connectors for loose, damaged or corroded terminals. Check central junction box fuse No. 3 (20-amp) and fuses related to system in question.
- Inspect 16-pin Data Link Connector (DLC) pins for damage. (Scheme 1) DLC is located below driver's side of instrument panel, to right of steering column. If pins are okay, go to next step. If pins are damaged, repair as necessary and proceed to next step.
- If problem is still present after performing inspection, connect New Generation Star (NGS) tester to DLC. Select vehicle to be tested from NGS tester menu. If NGS tester does not communicate with vehicle, ensure program card is properly installed. Check NGS tester cable connections and ensure ignition switch is in RUN position. If NGS tester still does not communicate with vehicle, go to «TEST M: NO MODULE/NETWORK COMMUNICATION - NO POWER TO NGS TESTER»(ref-2309-S09829341482000031700000) under SYSTEM TESTS. If NGS tester communicates with vehicle, perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000).
Scheme 1
DATA LINK DIAGNOSTIC TEST
- Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Select vehicle to be tested from NGS tester menu. Turn ignition switch to RUN position.
- Rotate dial on NGS 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).
- If NGS tester displays SYSTEM PASSED, module communications networks are okay. Return to SYMPTOM TEST INDEX in article of system in question to continue diagnosis.
- If NGS tester does not display SYSTEM PASSED, perform the following as applicable: If no response from NGS tester, go to «TEST M: NO MODULE/NETWORK COMMUNICATION - NO POWER TO NGS TESTER»(ref-2309-S09829341482000031700000) under SYSTEM TESTS. If NGS tester displays CKT70, CKT914 and/or CKT915 = SOME ECUS NO RESP/NOT EQUIP, go to «SYMPTOM TEST INDEX»(ref-2309-S32081371252000031700000) table to continue diagnosis. If NGS tester displays CKT70 = ALL ECUS NO RESP/NOT EQUIP, go to «TEST L: NO MODULE/NETWORK COMMUNICATIONS - ISO 9141 NETWORK»(ref-2309-S04770240122000031700000) under SYSTEM TESTS. If NGS tester displays CKT914 = ALL ECUS NO RESP/NOT EQUIP, go to «TEST K: NO MODULE/NETWORK COMMUNICATIONS - SCP NETWORK»(ref-2309-S34149701962000031700000) under SYSTEM TESTS. If NGS tester displays CKT915 = ALL ECUS NO RESP/NOT EQUIP, go to «TEST K: NO MODULE/NETWORK COMMUNICATIONS - SCP NETWORK»(ref-2309-S34149701962000031700000) under SYSTEM TESTS. If module in question is NO RESPONSE/NOT EQUIPPED, go to «SYMPTOM TEST INDEX»(ref-2309-S32081371252000031700000) table to continue diagnosis. If module in question is NO RESPONSE ON CKT914 (BUS+), go to «SYMPTOM TEST INDEX»(ref-2309-S32081371252000031700000) table to continue diagnosis. If module in question is NO RESPONSE ON CKT915 (BUS-), go to «SYMPTOM TEST INDEX»(ref-2309-S32081371252000031700000) table to continue diagnosis.
| Symptom | Perform Test |
|---|
| 4-Wheel Anti-Lock Brake System (4WABS) Module Does Not Respond To NGS Tester | A |
| Remote Anti-Theft Personality (RAP) Module Does Not Respond To NGS Tester | B |
| Generic Electronic Module (GEM) Does Not Respond To NGS Tester | C |
| Restraint Control Module (RCM) Does Not Respond To NGS Tester | D |
| Air Suspension Control Module Does Not Respond To NGS Tester | E |
| Driver's Seat Module (DSM) Does Not Respond To NGS Tester (1) | F |
| Powertrain Control Module (PCM) Does Not Respond To NGS Tester | G |
| Instrument Cluster Does Not Respond To NGS Tester | H |
| Electronic Automatic Temperature Control (EATC) Module Does Not Respond To NGS Tester (2) | J |
| No Module/Network Communications - SCP Network | K |
| No Module/Network Communications - ISO 9141 Network | L |
| No Module/Network Communication - No Power To NGS Tester | M |
| (1) Applies to Navigator with memory seat/mirrors only. (2) Applies to Navigator and Expedition Eddie Bauer only. |
| (1) | Applies to Navigator with memory seat/mirrors only. |
| (2) | Applies to Navigator and Expedition Eddie Bauer only. |
RETRIEVING & CLEARING DIAGNOSTIC TROUBLE CODES
Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Following manufacturers instructions to retrieve and clear codes for desired module. See appropriate table under DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS for a listing of Diagnostic Trouble Codes (DTCs) and appropriate test procedure.
TEST A: 4-WHEEL ANTI-LOCK BRAKE SYSTEM (4WABS) MODULE DOES NOT RESPOND TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to LOCK position. Disconnect 4-Wheel Anti-Lock Brake System (4WABS) module Black 24-pin connector. (Scheme 2) Inspect 4WABS connector for loose, damaged or corroded terminals. Repair as necessary. If connectors are okay, go to next step.
- Measure resistance of Light Blue/White wire between 4WABS module connector terminal No. 5 and DLC terminal No. 7. (Scheme 1)and (Scheme 2) If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, go to step 4.
- Connect 4WABS module connector. Perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000) under SELF-DIAGNOSTIC SYSTEM. If 4WABS module responds to NGS tester, system is functioning properly. If 4WABS module does not respond to NGS tester, replace 4WABS module. See appropriate ANTI-LOCK article in BRAKES.
- Disconnect and inspect both halves of bulkhead Gray 40-pin connector C160 located at left rear of engine compartment. (Scheme 3) Inspect connector for loose, damaged or corroded terminals. Repair connector as necessary. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between DLC terminal No. 7 and bulkhead Gray connector C160 (female half) terminal No. 29. (Scheme 1)and (Scheme 4). If resistance is less than 5 ohms, repair open in Light Blue/White wire between male half of bulkhead Gray connector C160 and 4WABS module connector. If resistance is 5 ohms or more, repair open in Light Blue/White wire between DLC and female half of bulkhead Gray connector C160.
Scheme 2
Scheme 3
Scheme 4
TEST B: REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DOES NOT RESPOND TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to LOCK position. Disconnect Remote Anti-Theft Personality (RAP) module Black 26-pin connector. (Scheme 5) Inspect RAP module connector for loose, damaged or corroded terminals. Repair as necessary. If connectors are okay, go to next step.
- Measure resistance of Light Blue/White wire between RAP module connector terminal No. 3 and DLC terminal No. 7. (Scheme 1)and (Scheme 5). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, go to step 4.
- Connect RAP module connector. Perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000) under SELF-DIAGNOSTIC SYSTEM. If RAP module responds to NGS tester, system is functioning properly. If RAP module does not respond to NGS tester, replace RAP module. See «REMOTE ANTI-THEFT PERSONALITY MODULE»(ref-2309-S37585303792000031700000) under REMOVAL & INSTALLATION.
- Disconnect and inspect both halves of in-line Gray 16-pin connector C247 located behind left side of instrument panel. (Scheme 6) Inspect connector for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between RAP module 26-pin connector terminal No. 3 and in-line 16-pin connector C247 (male half) terminal No. 16. (Scheme 5)and (Scheme 7). If resistance is less than 5 ohms, repair Light Blue/White wire between female half of in-line connector C247 and DLC. If resistance is 5 ohms or more, repair open in Light Blue/White wire between RAP module connector and male half of in-line connector C247.
Scheme 5
Scheme 6
Scheme 7
TEST C: GENERIC ELECTRONIC MODULE (GEM) DOES NOT RESPOND TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to LOCK position. Disconnect Generic Electronic Module (GEM) Gray 26-pin connector. (Scheme 5) Inspect connector GEM connector for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between GEM 26-pin connector terminal No. 25 and DLC terminal No. 7. (Scheme 1)and (Scheme 5). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Light Blue/White wire between GEM 26-pin connector and DLC.
- Connect GEM 26-pin connector. Perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000) under SELF-DIAGNOSTIC SYSTEM. If GEM responds to NGS tester, system is functioning properly. If GEM does not respond to NGS tester, replace GEM. See GENERIC ELECTRONIC MODULE/CENTRAL TIMER MODULE (GEM/CTM) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANEL - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article.
TEST D: RESTRAINT CONTROL MODULE (RCM) DOES NOT RESPOND TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to LOCK position. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect Restraint Control Module (RCM) 26-pin connector. (Scheme 8) Inspect RCM connector for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between RCM connector terminal No. 5 and DLC terminal No. 7. (Scheme 1)and (Scheme 8). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Light Blue/White wire between RCM connector and DLC.
- Connect RCM connector. Perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000) under SELF-DIAGNOSTIC SYSTEM. If RCM responds to NGS tester, system is functioning properly. If RCM does not respond to NGS tester, replace RCM. See RESTRAINT CONTROL MODULE (RCM) under REMOVAL & INSTALLATION in AIR BAG RESTRAINT SYSTEMS - EXPEDITION, EXPLORER, MOUNTAINEER & NAVIGATOR article.
Scheme 8
TEST E: AIR SUSPENSION CONTROL MODULE DOES NOT RESPOND TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to LOCK position. Air suspension control module has two 16-pin connectors. Disconnect air suspension control module 16-pin connector C296. Connector C296 has blank terminal No. 13. (Scheme 9) Inspect air suspension control module connector C296 for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between air suspension control module connector C296 terminal No. 29 and DLC terminal No. 7. (Scheme 1)and (Scheme 9). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Light Blue/White wire between air suspension control module and DLC.
- Connect air suspension control module connector C296. Perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000) under SELF-DIAGNOSTIC SYSTEM. If air suspension control module responds to NGS tester, system is functioning properly. If air suspension control module does not respond to NGS tester, replace air suspension control module. See appropriate ELECTRONIC article in SUSPENSION.
Scheme 9
TEST F: DRIVER'S SEAT MODULE (DSM) DOES NOT RESPOND TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to LOCK position. Disconnect Driver's Seat Module (DSM) 22-pin connector. Inspect DSM connector for loose, damaged or corroded terminals. Repair as necessary. If connectors are okay, go to next step.
- Measure resistance of Light Blue/White wire between DSM connector terminal No. 22 and DLC terminal No. 7. (Scheme 1)and (Scheme 10). If resistance is less than 5 ohms, go next step. If resistance is 5 ohms or more, go to step 4.
- Connect DSM connector. Perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000) under SELF-DIAGNOSTIC SYSTEM. If DSM module responds to NGS tester, system is functioning properly. If DSM module does not respond to NGS tester, replace DSM module. See DRIVER'S SEAT MODULE under REMOVAL & INSTALLATION in POWER SEATS - EXPEDITION, PICKUPS & NAVIGATOR article.
- Disconnect and inspect both halves of in-line Black 66-pin connector C201, located behind left side of instrument panel. (Scheme 6) Inspect connector for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between DLC connector terminal No. 7 and in-line 66-pin connector C207 terminal No. 11 (male half). (Scheme 1)and (Scheme 11). If resistance is less than 5 ohms, repair open in Light Blue/White wire between DSM module connector and female half of in-line connector. If resistance is 5 ohms or more, repair open in Light Blue/White wire between male half of in-line connector and DLC.
Scheme 10
Scheme 11
TEST G: POWERTRAIN CONTROL MODULE (PCM) DOES NOT RESPOND TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
Note. If test results indicate PCM is faulty, always check for any engine performance related Diagnostic Trouble Codes (DTCs) prior to replacing PCM. If any DTCs are present, service DTCs as necessary. See SELF-DIAGNOSTICS - EEC-V article in ENGINE PERFORMANCE.
- Turn ignition switch to LOCK position. Disconnect Powertrain Control Module (PCM) 104-pin connector. Inspect PCM connector for loose, damaged or corroded terminals. Repair as necessary. Connect PCM connector. Perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000) under SELF-DIAGNOSTIC SYSTEM. If NGS tester displays PCM: NO RESPONSE ON CKT914 (BUS+), go to next step. If NGS tester does not display PCM: NO RESPONSE ON CKT 914 (BUS+), go to step 5.
- Turn ignition switch to LOCK position. Disconnect NGS tester. Disconnect PCM connector. Measure resistance of Tan/Orange wire between PCM connector terminal No. 16 and DLC terminal No. 2. (Scheme 1)and (Scheme 12). If resistance is less than 5 ohms, perform quick test. See QUICK TEST in SELF-DIAGNOSTIC - EEC-V article in ENGINE PERFORMANCE. If resistance is 5 ohms or more, go to next step.
- Disconnect and inspect both halves of bulkhead Black 40-pin connector C158 located at left rear of engine compartment. (Scheme 3) Inspect connectors for loose, damaged or corroded terminals. Repair as necessary. If connectors are okay, go to next step.
- Measure resistance of Tan/Orange wire between DLC terminal No. 2 and female half of bulkhead connector C158 terminal No. 25. (Scheme 1)and (Scheme 4). If resistance is less than 5 ohms, repair open in Tan/Orange wire between male half of bulkhead connector C158 and PCM connector. If resistance is 5 ohms or more, repair open in Tan/Orange wire between female half of bulkhead connector C158 and DLC.
- Turn ignition switch to LOCK position. Disconnect NGS tester. Disconnect PCM connector. Measure resistance of Pink/Light Blue wire between PCM connector terminal No. 15 and DLC terminal No. 10. (Scheme 1)and (Scheme 12). If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, perform quick test. See QUICK TEST in SELF-DIAGNOSTICS - EEC-V article in ENGINE PERFORMANCE.
- Disconnect and inspect both halves of bulkhead connector C158, located at left rear of engine compartment. (Scheme 3) Inspect connectors for loose, damaged or corroded terminals. Repair as necessary. If connectors are okay, go to next step.
- Measure resistance of Pink/Light Blue wire between DLC terminal No. 10 and female half of bulkhead connector C158 terminal No. 29. (Scheme 4)and (Scheme 12). If resistance is less than 5 ohms, repair open in Pink/Light Blue wire between male half of bulkhead connector C158 and PCM connector. If resistance is 5 ohms or more, repair open in Pink/Light Blue wire between female half of bulkhead connector C158 and DLC.
Scheme 12
TEST H: INSTRUMENT CLUSTER DOES NOT RESPOND TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to LOCK position. Disconnect instrument cluster White 22-pin connector C237. (Scheme 13) Inspect instrument cluster connector C237 for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Connect instrument cluster connector C237. Perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000) under SELF-DIAGNOSTIC SYSTEM. If NGS tester displays HEC: NO RESPONSE ON CKT914 (BUS+), go to next step. If NGS tester does not display HEC: NO RESPONSE ON CKT914 (BUS+), go to step 4.
- Turn ignition switch to LOCK position. Disconnect NGS tester. Disconnect instrument cluster White 22-pin connector C237. Measure resistance of Tan/Orange wire between instrument cluster connector C237 terminal No. 1 and DLC terminal No. 2. (Scheme 1)and (Scheme 13). If resistance is less than 5 ohms, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. If resistance is 5 ohms or more, repair open in Tan/Orange wire between instrument cluster connector and DLC.
- Turn ignition switch to LOCK position. Disconnect NGS tester. Disconnect instrument cluster White 22-pin connector C237. Measure resistance of Pink/Light Blue wire between instrument cluster connector C237 terminal No. 2 and DLC terminal No. 10. (Scheme 1)and (Scheme 13). If resistance is less than 5 ohms, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. If resistance is 5 ohms or more, repair open in Pink/Light Blue wire.
Scheme 13
TEST J: ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE DOES NOT RESPOND TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to LOCK position. Electronic Automatic Temperature Control (EATC) module has two 13-pin connectors. Disconnect EATC module 13-pin connector C280. Connector C280 has a blank terminal No. 5. (Scheme 14) Inspect EATC module connector C280 for loose, damaged or corroded terminals. Repair as necessary. If connectors are okay, go to next step.
- Perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-2309-S21759764792000031700000) under SELF-DIAGNOSTIC SYSTEM. If NGS tester displays EATC: NO RESPONSE ON CKT914 (BUS+), go to next step. If NGS tester does not display EATC: NO RESPONSE ON CKT914 (BUS+), go to step 4.
- Turn ignition switch to LOCK position. Disconnect NGS tester. Disconnect EATC module 13-pin connector C280. Measure resistance of Tan/Orange wire between EATC module connector C280 terminal No. 15 and DLC terminal No. 2. (Scheme 1)and (Scheme 14). If resistance is less than 5 ohms, replace EATC module. See appropriate AUTOMATIC A/C-HEATER SYSTEMS article. If resistance is 5 ohms or more, repair open in Tan/Orange wire between EATC module connector and DLC.
- Turn ignition switch to LOCK position. Disconnect NGS tester. Disconnect EATC module 13-pin connector C280. Measure resistance of Pink/Light Blue wire between EATC module connector C280 terminal No. 1 at and DLC terminal No. 10. (Scheme 1)and (Scheme 14). If resistance is less than 5 ohms, replace EATC module. See appropriate AUTOMATIC A/C-HEATER SYSTEMS article. If resistance is 5 ohms or more, repair open in Pink/Light Blue wire between EATC module connector and DLC.
Scheme 14
TEST K: NO MODULE/NETWORK COMMUNICATIONS - SCP NETWORK
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
Note. Depending on module configuration, with all modules connected and with ignition switch in RUN position or with engine running 2-3 volts may be present at Data Link Connector (DLC) terminals No. 2 (Tan/Orange wire) and No. 10 (Pink/Light Blue wire). These are the Standard Corporate Protocol (SCP) diagnostic communications network circuits.
- Inspect New Generation Star (NGS) tester terminals for loose, damaged or corroded terminals. Repair as necessary. If terminals are okay, go to next step.
- Turn ignition switch to LOCK position. Inspect Data Link Connector (DLC) terminals for loose, damaged or corroded terminals. Pay particular attention to terminals No. 2 (Tan/Orange wire) and No. 10 (Pink/Light Blue wire). (Scheme 1) Repair as necessary. If terminals are okay, go to next step.
- Turn ignition switch to LOCK position. Disconnect Powertrain Control Module (PCM) 104-pin connector. Measure resistance of Tan/Orange wire between PCM connector terminal No. 16 and DLC terminal No. 2. (Scheme 1)and (Scheme 12). Measure resistance of Pink/Light Blue wire between PCM connector terminal No. 15 and DLC terminal No. 10. If resistances are less than 5 ohms, go to next step. If either resistance is 5 ohms or more, repair open in appropriate wire.
- Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 2 (Tan/Orange wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 2 (Tan/Orange wire) and No. 16 (Light Blue/White wire). Measure voltage between DLC terminals No. 10 (Pink/Light Blue) and No. 4 (Black wire). Measure voltage between DLC terminals No. 10 (Pink/Light Blue) and No. 16 (Light Blue/White wire). If any reading indicates voltage, go to next step. If all readings indicate zero volts, perform quick test. See QUICK TEST in SELF-DIAGNOSTICS - EEC-V article in ENGINE PERFORMANCE.
- Turn ignition switch to LOCK position. Connect PCM connector. Disconnect bulkhead Black 40-pin connector C158. (Scheme 3) Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 2 (Tan/Orange wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 2 (Tan/Orange wire) and No. 16 (Light Blue/White wire). Measure voltage between DLC terminals No. 10 (Pink/Light Blue wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 10 (Pink/Light Blue wire) and No. 16 (Light Blue/White wire). If all readings indicate zero volts, repair appropriate wires between bulkhead C158 and PCM connector. If any reading indicates voltage and vehicle is equipped with Electronic Automatic Temperature Control (EATC) module, connect bulkhead connector C158 and go to next step. If any reading indicates voltage and vehicle is not equipped with EATC module, connect bulkhead connector C158 and go to step 7.
- Turn ignition switch to LOCK position. Disconnect Electronic Automatic Temperature Control (EATC) module 13-pin connector C280. EATC module has two 13-pin connectors. Connector C280 has blank terminal No. 5. (Scheme 14) Measure voltage between DLC terminals No. 2 (Tan/Orange wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 2 (Tan/Orange wire) and No. 16 (Light Blue/White wire). Measure voltage between DLC terminals No. 10 (Pink/Light Blue wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 10 (Pink/Light Blue wire) and No. 16 (Light Blue/White wire). If any reading indicates voltage, go to next step. If all readings indicate zero volts, replace EATC module. See appropriate AUTOMATIC A/C-HEATER SYSTEMS article.
- Turn ignition switch to LOCK position. Disconnect instrument cluster White 22-pin connector C237. (Scheme 13) Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 2 (Tan/Orange wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 2 (Tan/Orange wire) and No. 16 (Light Blue/White wire). Measure voltage between DLC terminals No. 10 (Pink/Light Blue wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 10 (Pink/Light Blue wire) and No. 16 (Light Blue/White wire). If any reading indicates voltage, repair appropriate wire between bulkhead connector C158 (female side) and instrument cluster connector C237. If all readings indicate zero volts, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article.
TEST L: NO MODULE/NETWORK COMMUNICATIONS - ISO 9141 NETWORK
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
Note. Depending on module configuration, with all modules connected and with ignition switch in RUN position or with engine running 2-3 volts may be present at Data Link Connector (DLC) terminal No. 7 (Light Blue/White wire). This is the International Standards Organization (ISO) 9141 diagnostic communications network circuit.
- Turn ignition switch to LOCK position. Inspect Data Link Connector (DLC) for connector for loose, damaged or corroded terminals. Pay particular attention to terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire). (Scheme 1) Repair as necessary. If connector is okay, go to next step.
- Disconnect Generic Electronic Module (GEM) Gray 26-pin connector C239. Inspect GEM connector C239 for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between GEM connector C239 terminal No. 25 and DLC terminal No. 7. (Scheme 1)and (Scheme 5). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Light Blue/White wire between GEM connector C239 and DLC.
- Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 7 and 16 (both Light Blue/White wires). If both readings indicate zero volts, replace GEM. See GENERIC ELECTRONIC MODULE/CENTRAL TIMER MODULE (GEM/CTM) under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. If either reading indicates voltage and vehicle is not equipped with Driver's Seat Module (DSM) and air suspension control module, go to step 8. If either reading indicates voltage and vehicle is equipped with DSM and air suspension control module, go to next step. If either reading indicates voltage and vehicle is only equipped with DSM (no air suspension module), go to next step. If either reading indicates voltage and vehicle is only equipped with air suspension control module (no DSM), go to step 7.
- Turn ignition switch to LOCK position. Disconnect DSM 22-pin connector C356. Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 7 and 16 (both Light Blue/White wires). If either reading indicates voltage, go to next step. If both readings indicate zero volts, replace DSM. See DRIVER SEAT MODULE under REMOVAL & INSTALLATION in POWER SEATS - EXPEDITION, PICKUPS & NAVIGATOR article.
- Turn ignition switch to LOCK position. Disconnect in-line Black 66-pin connector C201. (Scheme 6) Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 7 and 16 (both Light Blue wires). If either reading indicates voltage and vehicle is equipped with air suspension control module, go to next step. If either reading indicates voltage and vehicle is not equipped with air suspension control module, go to step 8. If both readings indicate zero volts, repair Light Blue/White wire between DSM connector and in-line connector C201 (female side).
- Turn ignition switch to LOCK position. Disconnect air suspension module 16-pin connector C296. Air suspension module has two 16-pin connectors. Connector C296 has blank terminal No. 13. (Scheme 9) Measure voltage between DLC terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 7 and 16 (both Light Blue/White wires). If either reading indicates voltage, go to next step. If both readings indicate zero volts, replace air suspension module. See appropriate ELECTRONIC article in SUSPENSION.
- Turn ignition switch to LOCK position. Disconnect Remote Anti-Theft Personality (RAP) module Black 26-pin connector C256. (Scheme 5) Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 7 and 16 (both are Light Blue wires). If either reading indicates voltage, go to next step. If both readings indicate zero volts, replace RAP module. See «REMOTE ANTI-THEFT PERSONALITY MODULE»(ref-2309-S37585303792000031700000) under REMOVAL & INSTALLATION.
- Turn ignition switch to LOCK position. Disconnect in-line Gray 16-pin connector C247. (Scheme 6) Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 7 (Light Blue/White wire) and 4 (Black wire). Measure voltage between DLC terminals No. 7 and 16 (both Light Blue wires). If either reading indicates voltage, go to next step. If both readings indicate zero volts, repair Light Blue/white wire between in-line connector C247 (male side) and RAP module connector.
- Turn ignition switch to LOCK position. Disconnect 4-Wheel Anti-Lock Brake System (4WABS) module Black 24-pin connector. Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 7 and 16 (both Light Blue/White wires). If either reading indicates voltage, go to next step. If both readings indicate zero volts, replace 4WABS module.
- Turn ignition switch to LOCK position. Disconnect in-line Gray 40-pin connector C160. (Scheme 3) Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 7 and 16 (both Light Blue/White wires). If either reading indicates voltage, go to next step. If both readings indicate zero volts, repair Light Blue/White wire between 4WABS connector and in-line connector C160 (male side).
- Turn ignition switch to LOCK position. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect Restraint Control Module (RCM) 26-pin connector. Connect GEM Gray 26-pin connector C239. Turn ignition switch to RUN position. Measure voltage between DLC terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire). Measure voltage between DLC terminals No. 7 and 16 (both Light Blue/White wires). If either reading indicates voltage, repair Light Blue/White wire. If both readings indicate zero volts, replace RCM. See RESTRAINT CONTROL MODULE (RCM) under REMOVAL & INSTALLATION in AIR BAG RESTRAINT SYSTEMS - EXPEDITION, EXPLORER, MOUNTAINEER & NAVIGATOR article.
TEST M: NO MODULE/NETWORK COMMUNICATION - NO POWER TO NGS TESTER
Note. After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Inspect NGS tester connector for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Turn ignition switch to LOCK position. Inspect Data Link Connector (DLC) for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Measure voltage between DLC terminal No. 16 (Light Blue/White wire) and ground. (Scheme 1) If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair Light Blue/White wire between central junction box and DLC.
- Measure resistance between DLC terminal No. 4 (Black wire) and ground. Measure resistance between DLC terminal No. 5 (Black/White wire) and ground. If both readings are less than 5 ohms, repair or replace NGS tester. If any resistance reading is 5 ohms or more, repair open in Black wire or Black/White wire between ground and DLC.
DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS
Note. For Powertrain Control Module (PCM) DTC identification and repair, see SELF-DIAGNOSTICS - EEC-V article in ENGINE PERFORMANCE.
| DTC | Description | Perform Test |
|---|
| B1318 | Battery Voltage Low | (1) |
| B1342 | Air Suspension Control Module Defective | (1) |
| B1485 | Brake Pedal Input Circuit Battery Short | (2) |
| B1566 | Door Ajar Circuit Short To Ground | (1) |
| B1749 | Park/Neutral Switch Circuit Failure | (3) |
| B2140 | Initialization Failure (Vehicle Ride Height Not Programmed) | (1) |
| C1439 | Vehicle Acceleration EEC-V Circuit Failure | (1) |
| C1724 | Air Suspension Height Sensor Power Circuit Failure | (1) |
| C1725 | Air Suspension Front Pneumatic Failure | (3) |
| C1726 | Air Suspension Rear Pneumatic Failure | (1) |
| C1756 | Air Suspension Front Height Sensor High Signal Circuit Failure | (3) |
| C1760 | Air Suspension Rear Height Sensor High Signal Circuit Failure | (1) |
| C1770 | Air Suspension Vent Solenoid Output Circuit Failure | (1) |
| C1790 | Air Suspension Left Rear Air Spring Solenoid Output Circuit Failure | (1) |
| C1795 | Air Suspension Right Rear Air Spring Solenoid Output Circuit Failure | (1) |
| C1830 | Air Suspension Compressor Relay Circuit Failure | (1) |
| C1845 | Air Suspension Front Inflator Solenoid Output Circuit Failure | (3) |
| C1865 | Air Suspension Rear Inflator Solenoid Output Circuit Failure | (3) |
| C1869 | Air Suspension Gate Solenoid Output Circuit Failure | (3) |
| C1917 | Steering Electronic Variable Orifice (EVO) Out-Of-Range Fault | (4) |
| P1807 | 4x4 High Indicator Circuit Short To Ground | (3) |
| P1808 | 4x4 Low Indicator Circuit Short To Ground | (3) |
| (1) See appropriate ELECTRONIC article in SUSPENSION. (2) Using NGS tester, perform air suspension control module self-test. Make sure brake pedal is not pressed. If B1485 is retrieved again, repair Brake Pedal Position (BPP) switch circuit. See WIRING DIAGRAMS in appropriate CRUISE CONTROL SYSTEMS article. (3) Applies only to 4-Wheel Air Suspension system. See appropriate ELECTRONIC article in SUSPENSION. (4) See appropriate ELECTRONIC article in STEERING. |
| (1) | See appropriate ELECTRONIC article in SUSPENSION. |
| (2) | Using NGS tester, perform air suspension control module self-test. Make sure brake pedal is not pressed. If B1485 is retrieved again, repair Brake Pedal Position (BPP) switch circuit. See WIRING DIAGRAMS in appropriate CRUISE CONTROL SYSTEMS article. |
| (3) | Applies only to 4-Wheel Air Suspension system. See appropriate ELECTRONIC article in SUSPENSION. |
| (4) | See appropriate ELECTRONIC article in STEERING. |
AIR SUSPENSION CONTROL MODULE DTC INDEX
| DTC | Description | Perform Test |
|---|
| B1342 | ECU Defective | (1) |
| C1095/C1096 | Pump Motor | (1) |
| C1113/C1115 | Internal Power Relay | (1) |
| C1145 | Right Front Wheel Speed Sensor (Electrical/Static) | (1) |
| C1148/C1234 | Right Front Wheel Speed Sensor (Dynamic) | (1) |
| C1155 | Left Front Wheel Speed Sensor (Electrical/Static) | (1) |
| C1158/C1233 | Left Front Wheel Speed Sensor (Dynamic) | (1) |
| C1169 | Excessive Dump Time | (1) |
| C1184 | ABS System Timeout | (1) |
| C1185 | Open Internal Power Relay | (1) |
| C1194/C1196 | Left Front Dump Valve | (1) |
| C1198/C1200 | Left Front Isolation Valve | (1) |
| C1202/C1204 | Rear Dump Valve | (1) |
| C1206/C1208 | Rear isolation Valve | (1) |
| C1210/C1212 | Right Front Dump Valve | (1) |
| C1214/C1216 | Right Front Isolation Valve | (1) |
| C1220 | Yellow Anti-Lock Brake System (ABS) Warning Indicator Failure | (1) |
| C1222 | Wheel Speed Error (Dynamic) | (1) |
| C1229/C1237 | Rear Wheel Speed Sensor (Dynamic) | (1) |
| C1230 | Rear Wheel Speed Sensor (Electrical/Static) | (1) |
| (1) See appropriate ANTI-LOCK article in BRAKES. |
| (1) | See appropriate ANTI-LOCK article in BRAKES. |
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTC INDEX
| DTC | Description | Perform Test |
|---|
| B1342 | ECU Defective | (1) |
| B2401 | Audio Tape Deck Mechanism Fault | (2) |
| B2402 | Audio CD/DJ Thermal Shutdown Fault | (3) |
| B2403 | Audio CD/DJ Internal Fault | (3) |
| B2404 | Audio Steering Wheel Switch Circuit Fault | (3) |
| B2405 | Audio Single-Disc CD Player Thermal Shutdown Fault | (3) |
| B2406 | Audio Single-Disc CD Player Internal Fault | (3) |
| U2003 | Audio Compact Disk/Disk Jockey Not Responding | (3) |
| U2005 | Audio Rear Integrated Control Panel Unit Not Responding | (4) |
| U2008 | Audio Phone Not Responding | (5) |
| U2014 | Audio Subwoofer Unit Not Responding | (3) |
| (1) Using NGS tester, retrieve and document all continuous DTCs. Perform Audio Control Module (ACM) self-test. If DTC B1342 is retrieved again, replace ACM. (2) Verify no tape is in Audio Control Module (ACM). Using NGS tester, retrieve and document all continuous DTCs. Perform ACM self-test. If B2401 is retrieved again, replace or repair ACM. (3) Repair audio system concern. (4) RICP is not present, disconnected or inoperative. If vehicle is not equipped with RICP/RSC, code is not applicable. (5) Repair cellular phone system concern. |
| (1) | Using NGS tester, retrieve and document all continuous DTCs. Perform Audio Control Module (ACM) self-test. If DTC B1342 is retrieved again, replace ACM. |
| (2) | Verify no tape is in Audio Control Module (ACM). Using NGS tester, retrieve and document all continuous DTCs. Perform ACM self-test. If B2401 is retrieved again, replace or repair ACM. |
| (3) | Repair audio system concern. |
| (4) | RICP is not present, disconnected or inoperative. If vehicle is not equipped with RICP/RSC, code is not applicable. |
| (5) | Repair cellular phone system concern. |
AUDIO CONTROL MODULE (ACM) DTC INDEX
| DTC | Description | Perform Test |
|---|
| B1342 | ECU Defective | (1) |
| B1529 | Memory Set Switch Circuit Short To Power | (2) |
| B1533 | Memory 1 Switch Circuit Short To Power | (2) |
| B1537 | Memory 2 Switch Circuit Short To Battery | (2) |
| B1663 | Driver's Seat Front Up/Down Motor Stalled | (2) (3) |
| B1664 | Driver's Seat Rear Up/Down Motor Stalled | (2) (3) |
| B1665 | Driver's Seat Forward/Backward Motor Stalled | (2) (3) |
| B1667 | Driver's Mirror Up/Down Motor Stalled | (4) |
| B1668 | Driver's Mirror Right/Left Motor Stalled | (4) |
| B1669 | Passenger's Mirror Up/Down Motor Stalled | (4) |
| B1670 | Passenger's Mirror Right/Left Motor Stalled | (4) |
| B1676 | Battery Pack Voltage Out Of Range | (5) |
| B1697 | Driver's Mirror/Passenger's Switch Circuit Short To Power | (6) |
| B1711 | Driver's Seat Front Up Switch Circuit Short To Power | (3) |
| B1715 | Driver's Seat Front Down Switch Circuit Short To Power | (3) |
| B1719 | Driver's Seat Forward Switch Circuit Short To Power | (3) |
| B1723 | Driver's Seat Rearward Switch Circuit Short To Power | (3) |
| B1727 | Driver's Seat Rear Up Switch Circuit Short To Power | (3) |
| B1731 | Driver's Seat Rear Down Switch Circuit Short To Power | (3) |
| B1735 | Driver's Mirror Vertical Switch Circuit Short To Battery | (6) |
| B1739 | Driver's Mirror Horizontal Switch circuit Short To Power | (6) |
| B1743 | Passenger's Mirror Vertical Switch Circuit Short To Power | (6) |
| B1747 | Passenger's Mirror Horizontal Switch Circuit Short To Power | (6) |
| B1751 | Park/Neutral Switch Circuit Short To Power | (7) |
| B1950 | Seat Rear Up/Down Potentiometer Feedback Circuit Failure | (2) |
| B1952 | Seat Rear Up/Down Potentiometer Feedback Circuit Short To Power | (2) |
| B1954 | Seat Front Up/Down Potentiometer Feedback Circuit Failure | (2) |
| B1956 | Seat Front Up/Down Potentiometer Feedback Circuit Short To Power | (2) |
| B1962 | Seat Horizontal Forward/Rearward Potentiometer Feedback Circuit Failure | (2) |
| B1964 | Seat Horizontal Forward/Rearward Potentiometer Feedback Circuit Short To Power | (2) |
| B1987 | Pedal Forward/Rearward Motor Stalled | (8) |
| B1988 | Pedal Position Forward Switch Circuit Short To Power | (8) |
| B1989 | Pedal Position Rearward Switch Circuit Short To Power | (8) |
| B1990 | Pedal Forward/Rearward Potentiometer Feedback Circuit Failure | (8) |
| B1991 | Pedal Forward/Rearward Potentiometer Feedback Circuit Short To Power | (8) |
| (1) Using NGS tester, retrieve and document all continuous DTCs. Perform Driver's Seat Module (DSM) self-test. If DTC B1342 is retrieved again, replace DSM. (2) Perform TEST G: MEMORY SEAT DOES NOT OPERATE FROM MEMORY SWITCH under SYSTEM TESTS in POWER SEATS - EXPEDITION, PICKUPS & NAVIGATOR article. (3) Perform TEST F: MEMORY SEAT INOPERATIVE under SYSTEM TESTS in POWER SEATS - EXPEDITION, PICKUPS & NAVIGATOR article. (4) Perform TEST A: MEMORY MIRROR INOPERATIVE or TEST B: MEMORY MIRROR INOPERATIVE AT MEMORY SET SWITCH under SYSTEM TESTS in POWER MEMORY MIRRORS - NAVIGATOR article. (5) Check charging system concern. See GENERATORS - ECONOLINE, EXPEDITION, EXPLORER (4.0L OHV), PICKUPS (GASOLINE), NAVIGATOR & RANGER article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair power and ground circuits to Driver Seat Module (DSM). (6) Perform TEST A: MEMORY MIRROR INOPERATIVE under SYSTEM TESTS in POWER MEMORY MIRRORS - NAVIGATOR article. (7) Perform TEST J: NO COMMUNICATION WITH DSM under SYSTEM TESTS in POWER SEATS - EXPEDITION, PICKUPS & NAVIGATOR article. (8) Repair appropriate circuit as necessary. See appropriate wiring diagram in ADJUSTABLE PEDAL ASSEMBLY SYSTEMS article. |
| (1) | Using NGS tester, retrieve and document all continuous DTCs. Perform Driver's Seat Module (DSM) self-test. If DTC B1342 is retrieved again, replace DSM. |
| (2) | Perform TEST G: MEMORY SEAT DOES NOT OPERATE FROM MEMORY SWITCH under SYSTEM TESTS in POWER SEATS - EXPEDITION, PICKUPS & NAVIGATOR article. |
| (3) | Perform TEST F: MEMORY SEAT INOPERATIVE under SYSTEM TESTS in POWER SEATS - EXPEDITION, PICKUPS & NAVIGATOR article. |
| (4) | Perform TEST A: MEMORY MIRROR INOPERATIVE or TEST B: MEMORY MIRROR INOPERATIVE AT MEMORY SET SWITCH under SYSTEM TESTS in POWER MEMORY MIRRORS - NAVIGATOR article. |
| (5) | Check charging system concern. See GENERATORS - ECONOLINE, EXPEDITION, EXPLORER (4.0L OHV), PICKUPS (GASOLINE), NAVIGATOR & RANGER article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair power and ground circuits to Driver Seat Module (DSM). |
| (6) | Perform TEST A: MEMORY MIRROR INOPERATIVE under SYSTEM TESTS in POWER MEMORY MIRRORS - NAVIGATOR article. |
| (7) | Perform TEST J: NO COMMUNICATION WITH DSM under SYSTEM TESTS in POWER SEATS - EXPEDITION, PICKUPS & NAVIGATOR article. |
| (8) | Repair appropriate circuit as necessary. See appropriate wiring diagram in ADJUSTABLE PEDAL ASSEMBLY SYSTEMS article. |
DRIVER'S SEAT MODULE (DSM) DTC TEST INDEX
| DTC | Description | Perform Test |
|---|
| B1249 | Blend Door Short/Failure | (1) |
| B1251 | A/C In-Car Temperature Sensor Open Circuit | (1) |
| B1253 | A/C In-Car Temperature Sensor Short To Ground | (1) |
| B1255 | A/C Ambient Temperature Sensor Open Circuit | (1) |
| B1257 | A/C Ambient Temperature Sensor Short To Ground | (1) |
| B1261 | A/C Solar Radiation Sensor Circuit Short To Ground | (1) |
| U1073 | SCP Invalid Or Missing Data For Engine Coolant | (2) |
| U1341 | SCP Invalid Data For Vehicle Speed | (2) |
| (1) Repair climate control system concern. See appropriate AUTOMATIC A/C-HEATER SYSTEMS article. (2) Perform quick test. See QUICK TEST in SELF-DIAGNOSTICS - EEC-V article in ENGINE PERFORMANCE. |
| (1) | Repair climate control system concern. See appropriate AUTOMATIC A/C-HEATER SYSTEMS article. |
| (2) | Perform quick test. See QUICK TEST in SELF-DIAGNOSTICS - EEC-V article in ENGINE PERFORMANCE. |
ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE DTC INDEX
| DTC | Description | Perform Test |
|---|
| B1240 | Rear Washer Pump Relay Coil Circuit Failure | (1) |
| B1241 | Rear Washer Pump Relay Coil Short To Power | (1) |
| B1302 | Accessory Delay Relay Coil Circuit Failure | (2) |
| B1304 | Accessory Delay Relay Coil Circuit Short To Power | (2) |
| B1313 | Battery Saver Relay Coil Circuit Failure | (2) |
| B1315 | Battery Saver Relay Coil Circuit Short To Power | (2) |
| B1317 | Battery Voltage High | (3) |
| B1318 | Battery Voltage Low | (3) |
| B1322 | Driver's Door Ajar Circuit Short To Ground | (4) |
| B1323 | Door Ajar Circuit Failure | (5) |
| B1325 | Door Ajar Lamp Circuit Short To Power | (6) |
| B1330 | Passenger's Door Ajar Circuit Short To Ground | (4) |
| B1334 | Decklid Ajar Rear Door Circuit Short To Ground | (4) |
| B1338 | Door Ajar Right Rear Circuit Short To Ground | (4) |
| B1340 | Chime Input Request Circuit Short To Ground | (7) |
| B1342 | ECU Defective | (8) |
| B1345 | Heated Backlite Input Circuit Short To Ground | (9) |
| B1347 | Heated Backlite Relay Circuit Failure | (9) |
| B1349 | Heated Backlite Relay Short To Power | (9) |
| B1352 | Ignition Key-In Circuit Failure | (7) |
| B1355 | Ignition Run Circuit Failure | (10) |
| B1359 | Ignition Run/Acc Circuit Failure | (10) |
| B1365 | Ignition Start Circuit Short To Battery | (11) |
| B1371 | Illuminated Entry Relay Circuit Failure | (4) |
| B1373 | Illuminated Entry Relay Short To Power | (4) |
| B1398 | Driver's Window One Touch Down Relay Circuit Failure | (12) |
| B1400 | Driver's Power Window One Touch Down Relay Circuit Short To Power | (12) |
| B1405 | Driver's Power Window Down Circuit Short To Power | (13) |
| B1410 | Driver's Power Window Motor Circuit Failure | (13) |
| B1426 | Safety Belt Lamp Circuit Short To Power | (14) |
| B1428 | Safety Belt Lamp Circuit Failure | (15) |
| B1431 | Front Wiper Brake/Run Relay Circuit Failure | (16) |
| B1432 | Front Wiper Brake/Run Relay Short To Power | (16) |
| B1434 | Front Wiper Hi/Low Speed Relay Circuit Failure | (17) |
| B1436 | Front Wiper Hi/Low Speed Relay Circuit Short To Power | (17) |
| B1438 | Front Wiper Mode Select Switch Circuit Failure | (16) |
| B1441 | Front Wiper Mode Select Switch Input Short To Ground | (16) |
| B1446 | Front Wiper Park Sense Circuit Failure | (18) |
| B1450 | Front Wiper/Wash Interval Delay Switch Input Circuit Failure | (16) |
| B1453 | Front Wiper/Wash Interval Delay Switch Input Short To Ground | (16) |
| B1454 | Low Washer Fluid Indicator Circuit Failure | (19) |
| B1456 | Low Washer Fluid Indicator Circuit Short To Power | (19) |
| B1458 | Front Wiper/Washer Pump Motor Relay Circuit Failure | (20) |
| B1460 | Front Wiper/Washer Pump Motor Relay Coil Short To Power | (20) |
| B1462 | Safety Belt Switch Circuit Failure | (7) |
| B1466 | Front Wiper Hi/Low Speed Not Switching | (17) |
| B1473 | Front Wiper Motor Low Speed Circuit Failure | (17) |
| B1476 | Front Wiper Motor High Speed Circuit Failure | (17) |
| B1482 | Wiper Washer Fluid Level Sensor Circuit Short To Ground | (19) |
| B1483 | Brake Pedal Input Circuit Failure | (21) |
| B1485 | Brake Pedal Input Circuit Short To Power | (21) |
| B1574 | Door Ajar Left Rear Circuit Short To Ground | (4) |
| B1577 | Lamp Park Input Circuit Short To Power | (7) |
| B1610 | Illuminated Entry Input Short To Ground | (4) |
| B1611 | Rear Wiper Mode Select Switch Circuit Failure | (22) |
| B1614 | Rear Wiper Mode Select Switch Circuit Short To Ground | (23) |
| B1814 | Rear Wiper Motor Down Relay Circuit Failure | (22) |
| B1816 | Rear Wiper Motor Down Relay Coil Circuit Short To Power | (22) |
| B1818 | Rear Wiper Motor Up Relay Coil Circuit Failure | (22) |
| B1820 | Rear Wiper Motor Up Relay Circuit Short To Power | (22) |
| B1839 | Rear Wiper Motor Circuit Failure | (24) |
| B1840 | Front Wiper Power Circuit Failure | (16) |
| B1894 | Rear Wiper Motor Speed Sense Circuit Failure | (22) |
| B2105 | Throttle Position Input Out Of Range Low | (21) |
| B2106 | Throttle Position Input Out Of Range High | (21) |
| C1107 | ABS Function Enabled Input Circuit Failure | (21) |
| P0500 | Vehicle Speed Signal Circuit Failure | (21) (25) |
| P1804 | 4-Wheel Drive High Indicator Circuit Failure | (26) |
| P1806 | 4-Wheel Drive High Indicator Short To Power | (26) |
| P1812 | Transmission 4-Wheel Drive Mode Select Circuit Failure | (21) |
| P1815 | Transmission 4-Wheel Drive Mode Select Short Circuit To Ground | (21) |
| P1820 | Transmission Transfer Case Clockwise Shift Relay Coil Circuit Failure | (21) |
| P1822 | Transmission Transfer Case Clockwise Shift Relay Coil Short To Power | (21) |
| P1824 | Transmission 4-Wheel Drive Clutch Relay Circuit Failure | (21) |
| P1826 | Transmission 4-Wheel Drive Low Clutch Relay Short To Power | (21) |
| P1828 | Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure | (21) |
| P1830 | Transmission Transfer Case Counter Clockwise Shift Relay Coil Short To Power | (21) |
| P1836 | Transmission Transfer Case Front Shaft Speed Sensor Circuit Failure | (21) |
| P1837 | Transmission Transfer Case Rear Shaft Speed Sensor Circuit Failure | (21) |
| P1838 | Transmission Transfer Case Shift Motor Circuit Failure | (21) |
| P1846 | Transmission Transfer Case Contact Plate "A" Circuit Failure | (21) |
| P1850 | Transmission Transfer Case Contact Plate "B" Circuit Failure | (21) |
| P1854 | Transmission Transfer Case Contact Plate "C" Circuit Failure | (21) |
| P1858 | Transmission Transfer Case Contact Plate "D" Circuit Failure | (21) |
| P1866 | Transmission Transfer Case System Concern - Servicing Required | (21) |
| P1867 | Transmission Transfer Case Contact Plate General Circuit Failure | (21) |
| P1874 | Transmission Automatic Hall Effect Sensor Power Circuit Failure | (21) |
| P1875 | Transmission Automatic Hall Effect Sensor Power Circuit Short To Power | (21) |
| P1891 | Transmission Transfer Case Contact Plate Ground Return Open Circuit | (21) |
| P1892 | Transmission Automatic 4-Wheel Drive 4X4 Mechanical Lock Output Circuit Failure | (21) |
| P1893 | Transmission Automatic 4-Wheel Drive 4X4 Mechanical Lock Output Short To Power | (21) |
| (1) Perform TEST J: REAR WASHER PUMP INOPERATIVE under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. (2) Perform TEST B: ALL POWER WINDOWS INOPERATIVE under SYSTEM TESTS in POWER WINDOWS - EXPEDITION & NAVIGATOR article. (3) Check charging system concern. See GENERATORS - ECONOLINE, EXPEDITION, EXPLORER (4.0L OHV), PICKUPS (GASOLINE), NAVIGATOR & RANGER article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair power and ground circuits at Generic Electronic Module (GEM). (4) Repair interior illumination concern. See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS article. (5) Perform TEST J: DOOR AJAR LAMP INOPERATIVE or TEST K: DOOR AJAR LAMP DOES NOT OPERATE CORRECTLY under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. (6) Perform TEST J: DOOR AJAR LAMP INOPERATIVE under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. (7) Repair warning chime concern. (8) Using NGS tester, retrieve and document all continuous DTCs. Perform Generic Electronic Module (GEM) self-test. If DTC B1342 is retrieved again, replace GEM. (9) Repair defogger concern. See appropriate wiring diagram in REAR WINDOW DEFOGGERS article. (10) Perform TEST E: NO POWER IN RUN POSITION under SYSTEM TESTS in STEERING COLUMN SWITCHES - EXPEDITION & NAVIGATOR article. (11) Perform TEST F: NO POWER IN START POSITION under SYSTEM TESTS in STEERING COLUMN SWITCHES - EXPEDITION & NAVIGATOR article. (12) Perform TEST D: ONE TOUCH DOWN FEATURE INOPERATIVE under SYSTEM TESTS in POWER WINDOWS - EXPEDITION & NAVIGATOR article. (13) Perform TEST C: SINGLE WINDOW INOPERATIVE under SYSTEM TESTS in POWER WINDOWS - EXPEDITION & NAVIGATOR article. (14) Perform TEST H: SAFETY BELT INDICATOR LAMP INOPERATIVE under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. (15) Perform TEST H: SAFETY BELT INDICATOR LAMP INOPERATIVE or TEST I: SAFETY BELT INDICATOR LAMP DOES NOT OPERATE CORRECTLY under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. (16) Perform TEST A: FRONT WIPERS INOPERATIVE under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. (17) Perform TEST C: FRONT WIPERS OPERATE AT INTERVAL SETTING, BUT INOPERATIVE AT HIGH &/OR LOW SPEED under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR. (18) Perform TEST D: FRONT WIPERS INOPERATIVE AT INTERVAL SETTING, BUT OPERATE AT HIGH & LOW SPEED under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR. (19) Perform TEST L: LOW WASHER FLUID INDICATOR DOES NOT OPERATE PROPERLY under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR. (20) Perform TEST E: FRONT WASHER PUMP INOPERATIVE under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR. (21) Repair transfer case electronic controls concern. See appropriate BORG-WARNER - ELECTRONIC CONTROLS article in TRANSFER CASES. (22) Perform TEST G: REAR WIPERS INOPERATIVE under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. (23) Perform TEST K: REAR WIPER STAYS ON CONTINUOUSLY under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. (24) Perform TEST H: REAR WIPER WILL NOT PARK PROPERLY under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. (25) Perform TEST F: FRONT WIPER SPEED DEPENDENT INTERVAL MODE NOT OPERATING PROPERLY under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. (26) Perform TEST N: 4X4 INDICATOR LAMP INOPERATIVE OR ALWAYS ON under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. |
| (1) | Perform TEST J: REAR WASHER PUMP INOPERATIVE under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (2) | Perform TEST B: ALL POWER WINDOWS INOPERATIVE under SYSTEM TESTS in POWER WINDOWS - EXPEDITION & NAVIGATOR article. |
| (3) | Check charging system concern. See GENERATORS - ECONOLINE, EXPEDITION, EXPLORER (4.0L OHV), PICKUPS (GASOLINE), NAVIGATOR & RANGER article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair power and ground circuits at Generic Electronic Module (GEM). |
| (4) | Repair interior illumination concern. See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS article. |
| (5) | Perform TEST J: DOOR AJAR LAMP INOPERATIVE or TEST K: DOOR AJAR LAMP DOES NOT OPERATE CORRECTLY under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. |
| (6) | Perform TEST J: DOOR AJAR LAMP INOPERATIVE under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. |
| (7) | Repair warning chime concern. |
| (8) | Using NGS tester, retrieve and document all continuous DTCs. Perform Generic Electronic Module (GEM) self-test. If DTC B1342 is retrieved again, replace GEM. |
| (9) | Repair defogger concern. See appropriate wiring diagram in REAR WINDOW DEFOGGERS article. |
| (10) | Perform TEST E: NO POWER IN RUN POSITION under SYSTEM TESTS in STEERING COLUMN SWITCHES - EXPEDITION & NAVIGATOR article. |
| (11) | Perform TEST F: NO POWER IN START POSITION under SYSTEM TESTS in STEERING COLUMN SWITCHES - EXPEDITION & NAVIGATOR article. |
| (12) | Perform TEST D: ONE TOUCH DOWN FEATURE INOPERATIVE under SYSTEM TESTS in POWER WINDOWS - EXPEDITION & NAVIGATOR article. |
| (13) | Perform TEST C: SINGLE WINDOW INOPERATIVE under SYSTEM TESTS in POWER WINDOWS - EXPEDITION & NAVIGATOR article. |
| (14) | Perform TEST H: SAFETY BELT INDICATOR LAMP INOPERATIVE under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. |
| (15) | Perform TEST H: SAFETY BELT INDICATOR LAMP INOPERATIVE or TEST I: SAFETY BELT INDICATOR LAMP DOES NOT OPERATE CORRECTLY under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. |
| (16) | Perform TEST A: FRONT WIPERS INOPERATIVE under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (17) | Perform TEST C: FRONT WIPERS OPERATE AT INTERVAL SETTING, BUT INOPERATIVE AT HIGH &/OR LOW SPEED under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR. |
| (18) | Perform TEST D: FRONT WIPERS INOPERATIVE AT INTERVAL SETTING, BUT OPERATE AT HIGH & LOW SPEED under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR. |
| (19) | Perform TEST L: LOW WASHER FLUID INDICATOR DOES NOT OPERATE PROPERLY under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR. |
| (20) | Perform TEST E: FRONT WASHER PUMP INOPERATIVE under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR. |
| (21) | Repair transfer case electronic controls concern. See appropriate BORG-WARNER - ELECTRONIC CONTROLS article in TRANSFER CASES. |
| (22) | Perform TEST G: REAR WIPERS INOPERATIVE under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (23) | Perform TEST K: REAR WIPER STAYS ON CONTINUOUSLY under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (24) | Perform TEST H: REAR WIPER WILL NOT PARK PROPERLY under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (25) | Perform TEST F: FRONT WIPER SPEED DEPENDENT INTERVAL MODE NOT OPERATING PROPERLY under SYSTEM TESTS in WIPER/WASHER SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (26) | Perform TEST N: 4X4 INDICATOR LAMP INOPERATIVE OR ALWAYS ON under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. |
GENERIC ELECTRONIC MODULE (GEM) DTC TEST INDEX
| DTC | Description | Perform Test |
|---|
| B1201 | Fuel Sender Circuit Failure | (1) |
| B1202 | Fuel Sender Open | (1) |
| B1204 | Fuel Sender Short To Ground | (1) |
| B1213 | Anti-Theft Number Of Programmed Keys Below Minimum | (2) |
| B1232 | Antenna Not Connected Or Damaged Transceiver | (3) |
| B1317 | Battery Voltage High | (4) |
| B1318 | Battery Voltage Low | (4) |
| B1342 | ECU Defective | (5) |
| B1356 | Ignition RUN Circuit Open | (6) |
| B1364 | Ignition START Circuit Open | (6) |
| B1600 | PATS Ignition Key Transponder Signal Not Received | (7) |
| B1601 | PATS Received Incorrect Key Code (Unprogrammed Encoded Ignition Key) | (8) |
| B1602 | PATS Received Invalid Key Code Format | (9) |
| B1681 | PATS Transceiver Signal Not Received | (10) |
| B2103 | Antenna Not Connected Or Defective Transceiver | (3) |
| B2139 | PCM ID Mismatch Between PCM And HEC | (11) |
| B2141 | NVM Configuration Failure | (12) |
| B2143 | Odometer NVM Memory Failure | (13) |
| C1284 | Oil Pressure Switch Failure | (1) |
| P1197 | SELECT/RESET Switch Circuit Failure | (13) |
| U1011 | SCP Invalid Or Missing Data For Engine Air Intake | (14) |
| U1027 | SCP Invalid Or Missing Data For Engine RPM | (14) |
| U1041 | SCP Invalid Or Missing Data For Vehicle Speed | (14) |
| U1073 | SCP Invalid Or Missing Data For Engine Coolant | (14) |
| U1123 | SCP Invalid Or Missing Data For Odometer | (14) |
| U1131 | SCP Invalid Or Missing Data For Fuel System | (14) |
| U1147 | SCP Invalid Or Missing Data For Vehicle Security For Vehicle Security | (15) |
| U1148 | SCP Invalid Or Missing Data for audio Control | (14) |
| U1262 | Missing SCP Message | (16) |
| (1) Perform TEST C: FUEL GAUGE INACCURATE under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. (2) Perform TEST C: ANTI-THEFT NUMBER OF PROGRAMMED KEYS IS BELOW MINIMUM under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. (3) Perform TEST D: ANTENNA NOT CONNECTED under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. (4) Repair charging system concern. See GENERATORS - ECONOLINE, EXPEDITION, EXPLORER (4.0L OHV), PICKUPS (GASOLINE), NAVIGATOR & RANGER article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair power and ground circuits to Hybrid Electronic Cluster (HEC). (5) Using NGS tester, retrieve and document all continuous DTCs. Perform Hybrid Electronic Cluster (HEC) self-test. If DTC B1342 is retrieved again, replace instrument cluster. (6) Repair ignition circuit concern. See STEERING COLUMN SWITCHES - EXPEDITION & NAVIGATOR article. See appropriate wiring diagram in POWER DISTRIBUTION article in WIRING DIAGRAMS. (7) Perform TEST E: IGNITION KEY TRANSPONDER SIGNAL NOT RECEIVED under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. (8) Perform TEST F: INCORRECT KEY CODE FROM IGNITION KEY TRANSPONDER under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. (9) Perform TEST G: INVALID FORMAT KEY CODE FROM IGNITION KEY TRANSPONDER under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. (10) Perform TEST H: TRANSCEIVER MODULE SIGNAL NOT RECEIVED under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. (11) Perform TEST I: PCM ID DOES NOT MATCH INSTRUMENT CLUSTER ID under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. (12) Perform TEST J: CONFIGURATION FAILURE, NO PCM ID EXCHANGED under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. (13) Replace instrument cluster. Clear DTCs and retest system. (14) Using NGS tester, perform Powertrain Control Module (PCM) self-test. (15) Perform TEST K: INVALID OR MISSING VEHICLE SECURITY DATA under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. (16) Start diagnostics at INSPECTION & VERIFICATION . |
| (1) | Perform TEST C: FUEL GAUGE INACCURATE under SYSTEM TESTS in ANALOG INSTRUMENT PANELS - EXPEDITION, F150 & F250 LIGHT-DUTY PICKUPS, & NAVIGATOR article. |
| (2) | Perform TEST C: ANTI-THEFT NUMBER OF PROGRAMMED KEYS IS BELOW MINIMUM under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (3) | Perform TEST D: ANTENNA NOT CONNECTED under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (4) | Repair charging system concern. See GENERATORS - ECONOLINE, EXPEDITION, EXPLORER (4.0L OHV), PICKUPS (GASOLINE), NAVIGATOR & RANGER article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair power and ground circuits to Hybrid Electronic Cluster (HEC). |
| (5) | Using NGS tester, retrieve and document all continuous DTCs. Perform Hybrid Electronic Cluster (HEC) self-test. If DTC B1342 is retrieved again, replace instrument cluster. |
| (6) | Repair ignition circuit concern. See STEERING COLUMN SWITCHES - EXPEDITION & NAVIGATOR article. See appropriate wiring diagram in POWER DISTRIBUTION article in WIRING DIAGRAMS. |
| (7) | Perform TEST E: IGNITION KEY TRANSPONDER SIGNAL NOT RECEIVED under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (8) | Perform TEST F: INCORRECT KEY CODE FROM IGNITION KEY TRANSPONDER under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (9) | Perform TEST G: INVALID FORMAT KEY CODE FROM IGNITION KEY TRANSPONDER under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (10) | Perform TEST H: TRANSCEIVER MODULE SIGNAL NOT RECEIVED under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (11) | Perform TEST I: PCM ID DOES NOT MATCH INSTRUMENT CLUSTER ID under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (12) | Perform TEST J: CONFIGURATION FAILURE, NO PCM ID EXCHANGED under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (13) | Replace instrument cluster. Clear DTCs and retest system. |
| (14) | Using NGS tester, perform Powertrain Control Module (PCM) self-test. |
| (15) | Perform TEST K: INVALID OR MISSING VEHICLE SECURITY DATA under SYSTEM TESTS in PASSIVE ANTI-THEFT SYSTEMS - EXPEDITION & NAVIGATOR article. |
| (16) | Start diagnostics at INSPECTION & VERIFICATION . |
HYBRID ELECTRONIC CLUSTER (HEC) DTC TEST INDEX
| DTC | Description | Perform Test |
|---|
| B1309 | Power Door Lock Circuit Short To Ground | (1) |
| B1341 | Power Door Unlock Circuit Short To Ground | (1) |
| B1485 | Brake Pedal Input Circuit Short To Power | (1) |
| B1629 | PRNDL Reverse Input Short To Power | (1) |
| B2425 | Remote Transmitter Out Of Sync | (1) |
| (1) Repair keyless entry system concern. See appropriate wiring diagram in REMOTE KEYLESS ENTRY article. |
| (1) | Repair keyless entry system concern. See appropriate wiring diagram in REMOTE KEYLESS ENTRY article. |
REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DTC INDEX
| DTC (1) | Description | Perform Test |
|---|
| B1342 | ECU Defective | (2) |
| B1231 | RCM Crash Data Memory Full | (2) |
| B1921 | RCM Bracket Ground Resistance High | (2) |
| C1414 | Incorrect Vehicle Identification Code | (2) |
| B1887 | Driver's Air Bag Circuit Shorted To Ground | (2) |
| B1916 | Driver's Air Bag Circuit Shorted To Power Or Ignition | (2) |
| B1888 | Passenger's Air Bag Circuit Shorted To Ground | (2) |
| B1925 | Passenger's Air Bag Circuit Shorted To Power | (2) |
| B1932 | Driver's Air Bag Circuit Resistance High | (2) |
| B1933 | Passenger's Air Bag Circuit Resistance High | (2) |
| B1934 | Driver's Air Bag Circuit Resistance Low | (2) |
| B1935 | Passenger's Air Bag Circuit Resistance Low | (2) |
| B1901 | External Crash Sensor Shorted To Ground | (2) |
| B1941 | External Crash Sensor Open Circuit Or Shorted To Power | (2) |
| B1892 | Air Bag tone Warning Indicator Circuit Shorted To Ground Or Open | (2) |
| B1891 | Air Bag Tone Warning Indicator Circuit Shorted To Power | (2) |
| B1869 | Air Bag Indicator Inoperative | (2) |
| B1870 | Air Bag Indicator Shorted To Power | (2) |
| (1) DTCs are listed in order of importance. Repair DTCs in order listed. (2) Repair supplemental restraint system concern. See appropriate DIAGNOSIS & TESTING article in the appropriate AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS. |
| (1) | DTCs are listed in order of importance. Repair DTCs in order listed. |
| (2) | Repair supplemental restraint system concern. See appropriate DIAGNOSIS & TESTING article in the appropriate AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS. |
RESTRAINT CONTROL MODULE (RCM) DTC INDEX
