INSPECTION & VERIFICATION
- Verify customer's original problem 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 related fuses for system in question.
- Inspect Data Link Connector (DLC) pins for damage. (Scheme 1) The DLC is located below driver's side of instrument panel, to the 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 is on. If NGS tester still does not communicate with vehicle, go to «TEST M: NO MODULE/NETWORK COMMUNICATION»(ref-1748-S03544444792000031400000) under SYSTEM TESTS. If NGS tester communicates with vehicle, perform data link diagnostic procedure. See «DATA LINK DIAGNOSTIC TEST»(ref-1748-S15958630282000031400000).
Scheme 1
DATA LINK DIAGNOSTIC TEST
- Connect New Generation Star (NGS) tester to Data Link Connector (DLC), if not already connected. Select vehicle to be tested from NGS tester menu.
- Turn ignition on. 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 CKT 914 (+) = SYSTEM PASSED and CKT 915 (-) = SYSTEM PASSED, module communications network is okay. If NGS tester displays CKT 70 = SYSTEM PASSED, ISO 9141 communication link is operating properly. Return to article that directed you here and continue diagnosis.
- If NGS tester does not display CKT 914 (+) = SYSTEM PASSED, CKT 915 (-) = SYSTEM PASSED and CKT 70 = SYSTEM PASSED, perform the following as applicable: If no response from NGS tester, go to «TEST M: NO MODULE/NETWORK COMMUNICATION»(ref-1748-S03544444792000031400000) under TESTING. If NGS tester displays CKT 70, CKT 914 and/or CKT 915 = SOME ECUS NO RESP/NOT EQUIP, go to «SYMPTOM INDEX»(ref-1748-S17483365872000031400000) table to continue diagnosis. If NGS tester displays CKT 70 = ALL ECUS NO RESP/NOT EQUIP, go to «TEST K: NO MODULE/NETWORK COMMUNICATION - ISO 9141 LINK»(ref-1748-S35411623202000031400000) under TESTING. If NGS tester displays CKT 914 = ALL ECUS NO RESP/NOT EQUIP, go to «TEST L: NO MODULE/NETWORK COMMUNICATION - BUS LINK»(ref-1748-S00830569042000031400000) under TESTING. If NGS tester displays CKT 915 = ALL ECUS NO RESP/NOT EQUIP, go to «TEST L: NO MODULE/NETWORK COMMUNICATION - BUS LINK»(ref-1748-S00830569042000031400000) under TESTING. If module in question is NO RESPONSE/NOT EQUIPPED, go to «SYMPTOM INDEX»(ref-1748-S17483365872000031400000) table to continue diagnosis. If module in question is NO RESPONSE ON CKT 914 (BUS +), go to «SYMPTOM INDEX»(ref-1748-S17483365872000031400000) table to continue diagnosis. If module in question is NO RESPONSE ON CKT 915 (BUS -), go to «SYMPTOM INDEX»(ref-1748-S17483365872000031400000) table to continue diagnosis.
RETRIEVING & CLEARING DIAGNOSTIC TROUBLE CODES
Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Following manufacturer's instructions to retrieve and clear codes for desired module. See appropriate table under DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS for a listing of DTCs and location of appropriate test procedure.
SYMPTOM TESTS
| Condition | Go To Test |
|---|---|
| 4-Wheel Anti-Lock Brake System (4WABS) Module Does Not Respond To NGS Tester | A |
| Generic Electronic (GEM) Module/Central Timer Module (CTM) Does Not Respond To NGS Tester | B |
| Restraint Control Module Does Not Respond To NGS Tester | C |
| Remote Anti-Theft Personality (RAP) Module Does Not Respond To NGS Tester | D |
| Powertrain Control Monitor (PCM) Does Not Respond To NGS Tester | E |
| Air Suspension Control Module Does Not Respond To NGS Tester | F |
| Electronic Automatic Temperature Control (EATC) Module Does Not Respond To NGS Tester | G |
| Driver Seat Module (DSM) Module Does Not Respond To NGS Tester | H |
| Parking Aid Monitor (PAM) Does Not Respond To NGS Tester | I |
| Passive Anti-Theft System (PATS) Module Does Not Respond To NGS Tester | J |
| No Module/Network Communications - ISO 9141 Link | K |
| No Module/Network Communications - BUS Link | L |
| No Module/Network Communication | M |
SYMPTOM INDEX
TEST A: 4-WHEEL ANTI-LOCK BRAKE SYSTEM (4WABS) MODULE DOES NOT RESPOND TO NGS TESTER
- Turn ignition off. Disconnect 4WABS module connector located at left side of engine compartment. Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 23 at 4WABS module connector and terminal No. 7 at Data Link Connector (DLC). (Scheme 1)and (Scheme 2). If resistance is less than 5 ohms, replace 4WABS module and retest system for normal operation. If resistance is 5 ohms or more, go to next step.
- Disconnect and inspect both halves of 40-pin bulkhead connector C148 located at left rear of engine compartment, near brake master cylinder. (Scheme 3) Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 16 at female half of connector C148 and terminal No. 7 at DLC. (Scheme 1)and (Scheme 4). 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 DLC and bulkhead connector. Retest system for normal operation.
- Disconnect and inspect both halves in-line connector C140 located at left front of engine compartment, near 4WABS module connector. Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 16 at male half of bulkhead connector C148 and terminal No. 8 at female half of in-line connector C140. (Scheme 4)and (Scheme 5). If resistance is less than 5 ohms, repair open in Light Blue/White wire between in-line connector C140 and 4WABS connector. Retest system for normal operation. If resistance is 5 ohms or more, repair open in Light Blue/White wire between connector C148 and in-line connector C140. Retest system for normal operation.
Scheme 2
Scheme 3
Scheme 4
Scheme 5
TEST B: GENERIC ELECTRONIC MODULE (GEM)/CENTRAL TIMER MODULE (CTM) DOES NOT RESPOND TO NGS TESTER
- Turn ignition off. Disconnect GEM/CTM 26-pin connector C280 located behind center of instrument panel. (Scheme 3) Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 25 at GEM/CTM connector and terminal No. 7 at Data Link Connector (DLC). (Scheme 1)and (Scheme 6). If resistance is less than 5 ohms, replace GEM/CTM and retest system for normal operation. If resistance is 5 ohms or more, repair open in Light Blue/White wire between GEM/CTM connector and DLC. Retest system for normal operation.
Scheme 6
TEST C: RESTRAINT CONTROL MODULE DOES NOT RESPOND TO NGS TESTER
- Turn ignition off. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect Restraint Control Module (RCM) 26-pin connector located behind right kick panel. (Scheme 3) Inspect RCM connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 5 at RCM 26-pin connector and terminal No. 7 at Data Link Connector (DLC). (Scheme 1)and (Scheme 7). If resistance is less than 5 ohms, replace RCM. If resistance is 5 ohms or more, repair open in Light Blue/White wire between RCM connector and DLC. Retest system for normal operation.
Scheme 7
TEST D: REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DOES NOT RESPOND TO NGS TESTER
- Turn ignition off. Disconnect RAP module 26-pin connector C336 located behind left rear quarter panel. Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 3 at RAP module 26-pin connector and terminal No. 7 at Data Link Connector (DLC). (Scheme 1)and (Scheme 5). If resistance is less than 5 ohms, replace RAP module and retest system for normal operation. If resistance is 5 ohms or more, go to next step.
- Disconnect and inspect both halves of bulkhead connector C212 located at left corner of instrument panel, near cowl panel grommet. (Scheme 3) Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 3 at RAP module 26-pin connector and terminal No. 51 at male half of bulkhead connector C212. (Scheme 8) If resistance is less than 5 ohms, repair open in Light Blue/White wire between female half of bulkhead connector C212 and DLC. Retest system for normal operation. If resistance is 5 ohms or more, repair open in Light Blue/White wire between RAP module 26-pin connector and male half of bulkhead connector C212. Retest system for normal operation.
Scheme 8
TEST E: POWERTRAIN CONTROL MODULE (PCM) DOES NOT RESPOND TO NGS TESTER
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 and retest. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
Scheme 9
- Turn ignition off. Disconnect Powertrain Control Module (PCM) connector C202 located in engine compartment, at right side of firewall. Inspect PCM connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Tan/Orange wire between terminal No. 16 at PCM connector and terminal No. 2 at Data Link Connector (DLC) (Scheme 1)and (Scheme 9). Also, measure resistance of Pink/Light Blue wire between terminal No. 15 at PCM connector and terminal No. 10 at DLC. If both resistance readings are less than 5 ohms, replace PCM and retest system for normal operation. If any resistance reading is 5 ohms or more, go to next step.
- Disconnect and inspect both halves of 40-pin bulkhead connector C147 located at left rear corner engine compartment. (Scheme 3) Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Tan/Orange wire between terminal No. 21 at female half of bulkhead connector C147 and terminal No. 2 at DLC. (Scheme 1)and (Scheme 4). Also, measure resistance of Pink/Light Blue wire between terminal No. 25 at female half of bulkhead connector C147 and terminal No. 10 at DLC. If both resistance readings are less than 5 ohms, go to next step. If any resistance reading is 5 ohms or more, repair Tan/Orange wire and/or Pink/Light Blue wire between female half of bulkhead connector C147 and DLC. Retest system for normal operation.
- Disconnect and inspect both halves of 42-pin bulkhead Gray connector C115. Connector is located at left rear corner engine compartment, right of brake booster. Inspect connector for physical damage, bent terminals or corrosion. (Scheme 10) Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Tan/Orange wire between terminal No. 21 at male half of bulkhead connector C147 and terminal No. 11 at male half of bulkhead connector C115. (Scheme 4)and (Scheme 10). Also, measure resistance of Pink/Light Blue wire between terminal No. 25 at male half of bulkhead connector C147 and terminal No. 3 at male half of bulkhead connector C115. If both resistance readings are less than 5 ohms, repair Tan/Orange wire and/or Pink/Light Blue wire between female half of bulkhead connector C115 and PCM connector. Retest system for normal operation. If any resistance reading is 5 ohms or more, repair Tan/Orange wire and/or Pink/Light Blue wire between male half of bulkhead connector C147 and bulkhead connector C115.
Scheme 10
TEST F: AIR SUSPENSION CONTROL MODULE DOES NOT RESPOND TO NGS TESTER
- Turn ignition off. Disconnect air suspension control module Gray connector C2000 located left center of instrument panel. (Scheme 3) Inspect air suspension control module connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 29 at air suspension control module connector and terminal No. 7 at Data Link Connector (DLC). (Scheme 1)and (Scheme 11). If resistance is less than 5 ohms, replace air suspension control module and retest system for normal operation. If resistance 5 ohms or more, repair open in Light Blue/White wire between air suspension control module connector and DLC. Retest system for normal operation.
Scheme 11
TEST G: AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE DOES NOT RESPOND TO NGS TESTER
- Turn ignition off. Disconnect Automatic Temperature Control (EATC) module Black connector C297 located left center of instrument panel. (Scheme 3) Inspect EATC module connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Tan/Orange wire between terminal No. 15 at EATC module connector and terminal No. 2 at Data Link Connector (DLC). (Scheme 1)and (Scheme 12). Also, measure resistance of Light Blue/White wire between terminal No. 1 at EATC module connector and terminal No. 10 at DLC. If both resistance readings are less than 5 ohms, replace EATC module and retest system for normal operation. If any resistance reading is 5 ohms or more, repair Tan/Orange wire and/or Pink/Light Blue wire between DLC and EATC. Retest system for normal operation.
Scheme 12
TEST H: DRIVER SEAT MODULE (DSM) DOES NOT RESPOND TO NGS TESTER
- Turn ignition off. Disconnect Driver Seat Module (DSM) 22-pin connector C337 located under driver's seat. Inspect DSM connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 22 at DSM connector and terminal No. 7 at Data Link Connector (DLC). (Scheme 1)and (Scheme 13). If resistance is less than 5 ohms, replace DSM and retest system for normal operation. If resistance is 5 ohms or more, go to next step.
- Disconnect in-line connector C346 located under left front of driver's seat. Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 22 at DSM connector C337 and terminal No. 11 at in-line connector C346. (Scheme 13)and (Scheme 14). 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 DSM connector C337 and in-line connector C346. Retest system for normal operation.
- Disconnect and inspect both halves of bulkhead connector C212 located at left corner of instrument panel, near cowl panel grommet. (Scheme 3) Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 7 at DLC and terminal No. 51 at male half of bulkhead connector C212. (Scheme 1)and (Scheme 8). If resistance is less than 5 ohms, repair open in Light Blue/White wire between male half of bulkhead connector C212 and in-line connector C346. Retest system for normal operation. If resistance is 5 ohms or more, repair open in Light Blue/White wire between female half of bulkhead connector C212 and DLC. Retest system for normal operation.
Scheme 13
Scheme 14
TEST I: PARKING AID MODULE (PAM) DOES NOT RESPOND TO NGS TESTER
- Turn ignition off. Disconnect Parking Aid Module (PAM) 26-pin connector C440 located behind spare tire. Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 5 at PAM connector and terminal No. 7 at Data Link Connector (DLC). (Scheme 1)and (Scheme 15). If resistance is less than 5 ohms, replace PAM and retest system for normal operation. If resistance is 5 ohms or more, go to next step.
- Disconnect and inspect both halves of bulkhead connector C212 located at left corner of instrument panel, near cowl panel grommet. (Scheme 3) Inspect connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between terminal No. 5 at PAM connector and terminal No. 51 at male half of bulkhead connector C212. (Scheme 15)and see scheme 17. If resistance is less than 5 ohms, repair open in Light Blue/White wire between female half of bulkhead connector C212 and DLC. Retest system for normal operation. If resistance is 5 ohms or more, repair open in Light Blue/White wire between PAM connector and male half of bulkhead connector C212. Retest system for normal operation.
Scheme 15
TEST J: PASSIVE ANTI-THEFT SYSTEM (PATS) MODULE DOES NOT RESPOND TO NGS TESTER
- Turn ignition off. Disconnect PATS module 16-pin connector C222 located behind center of instrument panel. (Scheme 3) Inspect PATS module connector for physical damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Tan/Orange wire between terminal No. 6 at PATS module connector and terminal No. 2 at DLC. (Scheme 1)and (Scheme 16). Also, measure resistance of Pink/Light Blue wire between terminal No. 5 at PATS module connector and terminal No. 10 at DLC. If both resistance readings are less than 5 ohms, replace PATS module and retest system for normal operation. If any resistance reading is 5 ohms or more, repair Tan/Orange wire and/or Pink/Light Blue wire between DLC and PATS module. Retest system for normal operation.
Scheme 16
TEST K: NO MODULE/NETWORK COMMUNICATIONS - ISO 9141 LINK
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.
- Inspect NGS tester connector for loose, damaged or corroded terminals. Pay particular attention to terminal No. 7. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Turn ignition off. Inspect Data Link Connector (DLC) for physical damage, bent terminals or corrosion. Pay particular attention to terminal No. 7 (Light Blue/White wire). Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Ensure ignition is off. Disconnect GEM/CTM 26-pin connector C280 located behind center of instrument panel. (Scheme 3) Measure resistance of Light Blue/White wire between terminal No. 25 at GEM/CTM 26-pin connector and terminal No. 7 at DLC. (Scheme 1)and (Scheme 6). If resistance is 5 ohms or more, repair open Light Blue/White wire between DLC and GEM/CTM connector. Retest system for normal operation. If resistance is less than 5 ohms, go to next step.
- If vehicle is equipped with a Remote Anti-Theft Personality (RAP) module, Parking Aid Module (PAM) or a Driver Seat Module (DSM), go to next step. If vehicle is not equipped with a RAP module, PAM or a DSM, go to step 6.
- Disconnect 84-pin in-line connector C212 located at left corner of instrument panel, near cowl panel grommet. (Scheme 3) Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, go to next step. If both readings indicate zero volts, proceed as follows: If vehicle is equipped with a combination of RAP module, PAM or DSM, go to step 11. If vehicle is equipped with a RAP module only, go to step 18. If vehicle is equipped with a PAM only, go to step 19. If vehicle is equipped with a DSM only, go to step 20.
- Turn ignition off. Reconnect in-line connector C212. Disconnect 40-pin bulkhead connector C148 located at left rear of engine compartment, near brake master cylinder. (Scheme 3) Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, go to next step. If both readings indicate zero volts, go to step 22.
- Turn ignition off. Reconnect bulkhead connector C148. If vehicle is equipped with an air suspension control module, go to next step. If vehicle is not equipped with an air suspension control module, go to step 9.
- Disconnect air suspension control module connector C2000 located left center of instrument panel. (Scheme 3) Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, go to next step. If both readings indicate zero volts, replace air suspension control module and retest system for normal operation.
- Turn ignition off. Reconnect air suspension control module connector C2000. Disconnect GEM/CTM 26-pin connector C280 located behind center of instrument panel. (Scheme 3) Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, go to next step. If both readings indicate zero volts, replace GEM/CTM and retest system for normal operation.
- Turn ignition off. Reconnect GEM/CTM 26-pin connector C280. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect Restraint Control Module (RCM) connector, located behind right kick panel. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, repair circuit No. 70 (Light Blue/White wire). Retest system for normal operation. If both readings indicate zero volts, replace RCM and retest system for normal operation.
- Turn ignition off. Reconnect in-line connector C212. Check if vehicle is equipped with Remote Anti-Theft Personality (RAP) module. Rap is located behind left rear quarter panel. If vehicle is equipped with RAP module, go to next step. If vehicle is not equipped with RAP module, go to step 13.
- Disconnect RAP module 26-pin connector C336. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, go to next step. If both readings indicate zero volts, replace RAP module and retest system for normal operation.
- Turn ignition off. Reconnect RAP module 26-pin connector C336. Check if vehicle is equipped with Parking Aid Module (PAM). PAM is located behind spare tire. If vehicle is equipped with PAM, go to next step. If vehicle is not equipped with PAM, go to step 15.
- Disconnect PAM 24-pin connector C440. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, go to next step. If both readings indicate zero volts, replace PAM and retest system for normal operation.
- Turn ignition off. Reconnect PAM 24-pin connector C440. Check if vehicle is equipped with Driver's Seat Module (DSM). DSM is located under driver's seat. If vehicle is equipped with DSM, go to next step. If vehicle is not equipped with DSM, go to step 17.
- Disconnect DSM 22-pin connector C337. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, go to next step. If both readings indicate zero volts, replace DSM and retest system for normal operation.
- Turn ignition off. Reconnect DSM connector C337. Disconnect in-line connector C346 located under of left front of driver's seat. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, repair circuit No. 70 (Light Blue/White wire) between in-line connector C212, in-line connector C346 and RAP module connector. Retest system for normal operation. If both readings indicate zero volts, repair circuit No. 70 (Light Blue/White wire) between in-line connector C346 and DSM connector. Retest system for normal operation.
- Turn ignition off. Reconnect in-line connector C212. Disconnect RAP module 26-pin connector C336 located behind left rear quarter panel. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, repair circuit No. 70 (Light Blue/White wire) between in-line connector C212 and RAP module connector. Retest system for normal operation. If both readings indicate zero volts, replace RAP module and retest system for normal operation.
- Turn ignition off. Reconnect in-line connector C212. Disconnect PAM 26-pin connector C440 located behind spare tire. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, repair circuit No. 70 (Light Blue/White wire) between in-line connector C212 and PAM connector. If both readings indicate zero volts, replace PAM and retest system for normal operation.
- Turn ignition off. Reconnect PAM 26-pin connector C440. Disconnect DSM 22-pin connector C337 located under driver's seat. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, go to next step. If both readings indicate zero volts, replace DSM and retest system for normal operation.
- Turn ignition off. Disconnect in-line connector C346 located under left front of driver's seat. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, repair circuit No. 70 (Light Blue/White wire) between in-line connector C212 and in-line connector C346. Retest system for normal operation. If both readings indicate zero volts, repair circuit No. 70 (Light Blue/White wire) between in-line connector C346 and DSM connector. Retest system for normal operation.
- Turn ignition off. Reconnect 40-pin bulkhead connector C148. Disconnect 4WABS module connector located at left front of engine compartment. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, go to next step. If both readings indicate zero volts, replace 4WABS module and retest system for normal operation.
- Turn ignition off. Disconnect in-line 12-pin connector C140 located at left front of engine compartment, near 4WABS module connector. Turn ignition on. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange wire) at DLC. (Scheme 1) Also, measure voltage between terminals No. 7 (Light Blue/White wire) and No. 4 (Black wire) at DLC. If any reading indicates voltage, repair circuit No. 70 (Light Blue/White wire) between in-line connector C148 and in-line connector C140. Retest system for normal operation. If both readings indicate zero volts, repair circuit No. 70 (Light Blue/White wire) between in-line connector C140 and 4WABS. Retest system for normal operation.
TEST L: NO MODULE/NETWORK COMMUNICATIONS - BUS LINK
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 NGS tester connector for physical damage, bent terminals or corrosion. Pay particular attention to terminals No. 2 and 10. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Turn ignition off. Inspect Data Link Connector (DLC) for physical damage, bent terminals or corrosion. Pay particular attention to terminals No. 2 (Tan/Orange wire) and No. 10 (Pink/Light Blue wire). (Scheme 1) Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Disconnect PATS module 16-pin connector C222 located behind top right center of instrument panel. (Scheme 3) Measure resistance of Tan/Orange wire between terminal No. 6 at PATS module connector and terminal No. 2 at DLC. (Scheme 1)and (Scheme 16). Also, measure resistance of Pink/Light Blue wire between terminal No. 5 at PATS module connector and terminal No. 10 at DLC. If both resistance readings are less than 5 ohms, go to next step. If any resistance reading is 5 ohms or more, repair Tan/Orange wire and/or Pink/Light Blue wire between DLC and PATS module. Retest system for normal operation.
- Turn ignition on. Measure voltage between the following DLC terminals: Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 4 (Black wire) at DLC. (Scheme 1) Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 16 (Orange wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 4 (Black wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 16 (Orange wire) at DLC. If any reading indicates voltage, go to next step. If all readings indicate zero volts, replace PATS module. Retest system for normal operation.
- Turn ignition off. Reconnect PATS module 16-pin connector C222. Disconnect Powertrain Control Module (PCM) connector C202 located in engine compartment, at right side of firewall. Turn ignition on. Measure voltage between the following DLC terminals: Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 4 (Black wire) at DLC. (Scheme 1) Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 16 (Orange wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 4 (Black wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 16 (Orange wire) at DLC. If any reading indicates voltage, on vehicles not equipped with Electronic Automatic Temperature Control (EATC), go to step 7. On vehicles equipped with EATC, go to next step. If all readings indicate zero volts, replace PCM. Retest system for normal operation.
- Turn ignition off. Disconnect module Black connector C297 located left center of instrument panel. (Scheme 3) Measure voltage between the following DLC terminals: Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 4 (Black wire) at DLC. (Scheme 1) Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 16 (Orange wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 4 (Black wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 16 (Orange wire) at DLC. If any reading indicates voltage, go to next step. If all readings indicate zero volts, replace EATC module. Retest system for normal operation.
- Turn ignition off. Disconnect 40-pin bulkhead connector C147 located at left rear corner engine compartment. (Scheme 3) Turn ignition on. Measure voltage between the following DLC terminals: Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 4 (Black wire) at DLC. (Scheme 1) Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 16 (Orange wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 4 (Black wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 16 (Orange wire) at DLC. If all readings indicate zero volts, go to next step. If any reading indicates voltage, repair Tan/Orange wire and/or Pink/Light Blue wire between bulkhead connector C147, DLC, PATS module and EATC. Retest system for normal operation.
- Turn ignition off. Reconnect bulkhead connector C147. Disconnect 42-pin bulkhead Gray connector C115. Connector is located at left rear corner engine compartment, right of brake booster. Turn ignition on. Measure voltage between the following DLC terminals: Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 4 (Black wire) at DLC. (Scheme 1) Measure voltage between terminals No. 2 (Tan/Orange wire) and No. 16 (Orange wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 4 (Black wire) at DLC. Measure voltage between terminals No. 10 (Pink/Light Blue wire) and No. 16 (Orange wire) at DLC.
If all readings indicate zero volts, repair Tan/Orange wire and/or Pink/Light Blue wire between bulkhead connector C115 and PCM. Retest system for normal operation. If any reading indicates voltage, repair Tan/Orange wire and/or Pink/Light Blue wire between bulkhead connector C147 and connector C115. Retest system for normal operation.
TEST M: NO MODULE/NETWORK COMMUNICATION
- Inspect NGS tester connector for loose, damaged or corroded terminals. Repair as necessary and retest system for normal operation. If connector is okay, go to next step.
- Turn ignition off. Inspect Data Link Connector (DLC) for physical damage, bent terminals or corrosion. Repair as necessary and retest system for normal operation. If connector is okay, go to next step.
- Turn ignition off. Remove and inspect fuse No. 5 (10-amp) from instrument panel fuse block. If fuse is blown, go to next step. If fuse is okay, reinstall fuse and go to step 5.
- Replace fuse and retest system for normal operation. Recheck fuse. If fuse is okay, go to next step. If fuse is blown, repair short to ground in circuit No. 693 (Orange wire) between instrument panel fuse block and DLC. Retest system for normal operation.
- Measure voltage between ground and terminal No. 16 (Orange wire) at DLC. (Scheme 1) If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair circuit No. 693 (Orange wire) between instrument panel fuse block and DLC. Retest system for normal operation.
- Measure resistance between ground and terminals No. 4 (Black wire) and No. 5 (Black/White wire) at DLC. If both resistance readings are less than 5 ohms, repair or replace NGS tester. Retest system for normal operation. If any resistance reading is 5 ohms or more, repair open in Black wire or Black/White wire between ground and DLC. Retest system for normal operation.
DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS
| DTC | Description | Perform Test |
|---|---|---|
| B1318 | Battery Voltage Low | (1) |
| B1342 | ECU Defective | (1) |
| B1485 | Brake Pedal Position Switch Short To Voltage | (1) |
| B1565 | Door Ajar Input Short To Voltage | (1) |
| C1439 | Acceleration Input Signal Circuit Failure | (1) |
| C1724 | Height Sensor Power Circuit Failure | (1) |
| C1726 | Rear Pneumatic Failure | (1) |
| C1760 | Rear Height Sensor Circuit Failure | (1) |
| C1770 | Vent Solenoid Circuit Failure | (1) |
| C1830 | Air Compressor Relay Circuit Failure | (1) |
| C1865 | Rear Fill Solenoid Circuit Failure | (1) |
| C1869 | Rear Gate Solenoid | (1) |
| (1) Repair electronic suspension as necessary. See appropriate ELECTRONIC article in SUSPENSION. | ||
| (1) | Repair electronic suspension as necessary. See appropriate ELECTRONIC article in SUSPENSION. |
AIR SUSPENSION CONTROL MODULE DTC INDEX
| DTC | Description | Perform Test |
|---|---|---|
| B1342 | ECU Defective | (1) |
| B1529 | Memory Set Switch Short To Power | (2) |
| B1533 | Memory 1 Switch Short To Power | (2) |
| B1537 | Memory 2 Switch Short To Power | (2) |
| B1663 | Seat Front Up/Down Motor Stalled | (2) |
| B1664 | Seat Rear Up/Down Motor Stalled | (2) |
| B1665 | Seat Horizontal Motor Stalled | (2) |
| B1676 | Battery Voltage Out Or Range | (3) |
| B1711 | Driver's Seat Front Up Circuit Short To Voltage | (2) |
| B1715 | Driver's Seat Front Down Circuit Short To Voltage | (2) |
| B1719 | Driver's Seat Forward Circuit Short To Voltage | (2) |
| B1723 | Driver's Seat Rearward Circuit Short To Voltage | (2) |
| B1727 | Driver's Seat Rear Up Circuit Short To Voltage | (2) |
| B1731 | Driver's Seat Rear Down Circuit Short To Voltage | (2) |
| B1950 | Driver's Seat Rear Up/Down Feedback Circuit Failure | (2) |
| B1952 | Driver's Seat Rear Up/Down Feedback Circuit Short To Voltage | (2) |
| B1954 | Driver's Seat Front Up/Down Feedback Circuit Failure | (2) |
| B1956 | Driver's Seat Front Up/Down Feedback Circuit Short To Voltage | (2) |
| B1962 | Driver's Seat Horizontal Feedback Circuit Failure | (2) |
| B1964 | Driver's Seat Horizontal Feedback Circuit Short To Voltage | (2) |
| (1) Using NGS tester, retrieve and document continuous DTCs. Clear all DTCs. Perform GEM/CTM self-test. If DTC B1342 is retrieved again, replace GEM/CTM. (2) Repair power seat system as necessary. See POWER SEATS - EXPLORER & MOUNTAINEER article. (3) Check charging system and repair as necessary. See appropriate GENERATORS article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair wiring as necessary. See appropriate wiring diagram in POWER DISTRIBUTION article in WIRING DIAGRAMS. | ||
| (1) | Using NGS tester, retrieve and document continuous DTCs. Clear all DTCs. Perform GEM/CTM self-test. If DTC B1342 is retrieved again, replace GEM/CTM. |
| (2) | Repair power seat system as necessary. See POWER SEATS - EXPLORER & MOUNTAINEER article. |
| (3) | Check charging system and repair as necessary. See appropriate GENERATORS article in STARTING & CHARGING SYSTEMS. If charging system is okay, repair wiring as necessary. See appropriate wiring diagram in POWER DISTRIBUTION article in WIRING DIAGRAMS. |
DRIVER'S SEAT MODULE (DSM) DTC INDEX
| DTC | Description | Perform Test |
|---|---|---|
| B1249 | Blend Door Failure | (1) |
| B1251 | A/C In-Car Temperature Sensor Open Circuit | (1) |
| B1253 | A/C In-Car Temperature Sensor Circuit Short To Ground | (1) |
| B1255 | A/C Ambient Air Temperature Sensor Circuit Open | (1) |
| B1257 | A/C Ambient Air Temperature Sensor Circuit Short To Ground | (1) |
| B1261 | A/C Solar Radiation Sensor Circuit Short To Ground | (1) |
| U1073 | Invalid/Missing Data For Engine Coolant | (2) |
| U1341 | Invalid/Missing Data For Vehicle Speed | (3) |
| (1) Repair A/C system as necessary. See appropriate AUTOMATIC A/C-HEATER SYSTEMS article in A/C HEATER SYSTEMS. (2) Repair engine coolant temperature sensor circuit. See SELF-DIAGNOSTICS - EEC-V article in ENGINE PERFORMANCE. (3) Repair vehicle speed sensor circuit. See appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS. | ||
| (1) | Repair A/C system as necessary. See appropriate AUTOMATIC A/C-HEATER SYSTEMS article in A/C HEATER SYSTEMS. |
| (2) | Repair engine coolant temperature sensor circuit. See SELF-DIAGNOSTICS - EEC-V article in ENGINE PERFORMANCE. |
| (3) | Repair vehicle speed sensor circuit. See appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS. |
ELECTRONIC AUTOMATIC TEMPERATURE CONTROL MODULE DTC INDEX
| DTC | Description | Perform Test |
|---|---|---|
| B1302 (2) | Accessory Delay Relay Coil Circuit Failure | (3) |
| B1304 (2) | Accessory Delay Relay Coil Circuit Open Or Short To Voltage | (3) |
| B1313 | Battery Saver Relay Coil Circuit Failure | (3) |
| B1315 | Battery Saver Relay Coil Circuit Short To Voltage | (3) |
| B1317 | Battery Voltage High | (4) (5) |
| B1318 | Battery Voltage Low | (4) (5) |
| B1322 | Driver's Door Ajar Circuit Short To Ground | (5) (6) |
| B1323 | Door Ajar Light Circuit Failure | (7) |
| B1325 | Door Ajar Light Circuit Short To Voltage | (7) |
| B1330 | Passenger's Door Ajar Circuit Short To Ground | (5) (6) |
| B1334 | Deck Lid Ajar Rear Door Circuit Short To Ground | (6) |
| B1338 | Right Rear Door Ajar Circuit Short To Ground | (6) |
| B1340 | Chime Input Request Circuit Short To Ground | (8) |
| B1342 | GEM/CTM Is Defective | (9) |
| B1345 (2) | Heated Backlite Input Circuit Short To Ground | (10) |
| B1347 (2) | Heated Backlite Relay Circuit Failure | (10) |
| B1349 (2) | Heated Backlite Relay Circuit Short To Voltage | (10) |
| B1352 | Ignition Key-In Circuit Failure | (5) (8) |
| B1355 | Ignition RUN Circuit Failure | (11) |
| B1359 | Ignition RUN/ACC Circuit Failure | (11) |
| B1371 | Illuminated Entry Relay Circuit Failure | (4) |
| B1373 | Interior Light Relay Coil Circuit Short To Voltage | (6) |
| B1398 (2) | Driver's Power Window One-Touch Window Relay Circuit Failure | (12) |
| B1400 (2) | Driver's Power Window One-Touch Window Relay Coil Circuit Short To Voltage | (12) |
| B1404 (2) | Driver Door Power Window Down Circuit Open | (12) |
| B1405 (2) | Driver Door Power Window Down Circuit Short To Voltage | (12) |
| B1410 (2) | Driver Door Power Window Motor Circuit Failure | (5) (12) |
| B1426 | Seat Belt Light Circuit Short To Voltage | (7) |
| B1428 | Seat Belt Light Output Circuit Failure | (7) |
| B1431 | Wiper Brake/Run Relay Circuit Failure | (13) |
| B1432 | Wiper Brake/Run Relay Short To Voltage | (13) |
| B1434 | Wiper Hi/Low Speed Relay Circuit Failure | (13) |
| B1436 | Wiper Hi/Low Speed Relay Circuit Short To Voltage | (13) |
| B1438 | Wiper Mode Select Switch Circuit Failure | (5) (13) |
| B1441 | Wiper Mode Select Switch Input Short To Ground | (5) (13) |
| B1446 | Wiper Park Sense Circuit Failure | (5) (13) |
| B1450 | Wiper/Wash Interval Delay Switch Input Circuit Failure | (5) (13) |
| B1453 | Wiper/Wash Interval Delay Switch Input Short To Ground | (5) (13) |
| B1458 | Wiper/Washer Pump Motor Relay Circuit Failure | (13) |
| B1460 | Wiper/Washer Pump Motor Relay Coil Short To Voltage | (13) |
| B1462 | Seat Belt Switch Circuit Failure | (5) (8) |
| B1466 | Wiper Hi/Low Speed Not Switching | (13) |
| B1467 | Wiper Motor Hi/Low Speed Circuit Short To Voltage | (13) |
| B1473 | Wiper Motor Low Speed Circuit Failure | (13) |
| B1475 | Delayed Accessory Relay Contacts Short To Voltage | (12) |
| B1476 | Wiper Motor High Speed Circuit Failure | (13) |
| B1483 (2) | Brake Pedal Input Circuit Failure | (14) |
| B1485 (2) | Brake Pedal Input Circuit Short To Voltage | (14) |
| B1574 | Left Rear Door Ajar Circuit Short To Ground | (6) |
| B1577 | Parking Light Input Circuit Short To Voltage | (5) (8) |
| B1610 (2) | Illuminated Entry Input Request Circuit Short To Ground | (5) (6) |
| B1611 (2) | Rear Wiper Mode Select Switch Circuit Failure | (13) |
| B1614 (2) | Rear Wiper Mode Select Switch Circuit Short To Ground | (13) |
| B1814 (2) | Rear Wiper Motor Down Relay Circuit Failure | (13) |
| B1816 (2) | Rear Wiper Motor Down Relay Coil Circuit Short To Voltage | (13) |
| B1818 (2) | Rear Wiper Motor Up Relay Coil Circuit Failure | (13) |
| B1820 (2) | Rear Wiper Motor Up Relay Circuit Short To Voltage | (13) |
| B1833 (2) | Door Unlock Switch Circuit Short To Ground | (5) (15) |
| B1834 (2) | Door Unlock Disarm Output Circuit Failure | (15) |
| B1836 (2) | Door Unlock Disarm Output Circuit Short To Voltage | (15) |
| B1839 (2) | Rear Wiper Motor Circuit Failure | (13) |
| B1840 | Front Wiper Power Circuit Failure | (13) |
| B1894 (2) | Rear Wiper Motor Speed Sense Circuit Failure | (13) |
| B2105 (2) | Throttle Position Input Signal Out Of Low Range | (14) |
| B2106 (2) | Throttle Position Input Signal Out Of High Range | (14) |
| B2141 | NVM Configuration Failure | (16) |
| P0500 (2) | Vehicle Speed Signal Circuit Failure | (14) |
| P1763 (2) | Transmission Neutral In Tow Indicator Circuit Short To Voltage | (8) |
| P1764 (2) | Transmission Neutral In Tow Indicator Circuit Failure | (8) |
| P1804 (2) | 4-Wheel Drive High Indicator Circuit Failure | (7) |
| P1806 (2) | 4-Wheel Drive High Indicator Circuit Short To Voltage | (7) |
| P1808 (2) | 4-Wheel Drive Low Indicator Circuit Failure | (7) |
| P1810 (2) | 4-Wheel Drive Low Indicator Circuit Short To Voltage | (7) |
| P1812 (2) | 4-Wheel Drive Mode Select Circuit Failure | (14) |
| P1815 (2) | 4-Wheel Drive Mode Select Circuit Short To Ground | (14) |
| P1820 (2) | Transfer Case Clockwise Shift Relay Coil Circuit Failure | (14) |
| P1822 (2) | Transfer Case Clockwise Shift Relay Coil Short To Power | (14) |
| P1824 (2) | 4-Wheel Drive Electric Clutch Relay Circuit Failure | (14) |
| P1826 (2) | 4-Wheel Drive Low Clutch Relay Short To Voltage | (14) |
| P1828 (2) | Transfer Case Counterclockwise Shift Relay Circuit Failure | (14) |
| P1830 (2) | Transfer Case Counterclockwise Shift Relay Coil Short To Voltage | (14) |
| P1836 (2) | Transfer Case Front Shaft Speed Sensor Circuit Failure | (14) |
| P1837 (2) | Transfer Case Rear Shaft Speed Sensor Circuit Failure | (14) |
| P1838 (2) | Transfer Case Shift Motor Circuit Failure | (14) |
| P1846 (2) | Transfer Case Contact Plate "A" Circuit Failure | (14) |
| P1850 (2) | Transfer Case Contact Plate "B" Circuit Failure | (14) |
| P1854 (2) | Transfer Case Contact Plate "C" Circuit Failure | (14) |
| P1858 (2) | Transfer Case Contact Plate "D" Circuit Failure | (14) |
| P1866 (2) | Transfer Case System Concern | (14) |
| P1867 (2) | Transfer Case Contact Plate General Circuit Failure | (14) |
| P1874 (2) | Automatic Hall Effect Sensor Power Circuit Failure | (14) |
| P1875 (2) | Automatic Hall Effect Sensor Power Circuit Short To Voltage | (14) |
| P1891 (2) | Transfer Case Contact Plate Ground Return Open Circuit | (14) |
| (1) Vehicles equipped with 4WD and/or power windows are equipped with a GEM. All other vehicle are equipped with a CTM. (2) This code only applies to vehicles equipped with a GEM. (3) Perform TEST A: ALL POWER WINDOWS ARE INOPERATIVE in appropriate POWER WINDOWS article for testing procedures. (4) Check charging system. See appropriate GENERATORS article in STARTING & CHARGING SYSTEMS. Repair as necessary. If charging system is okay, fault is in power or ground circuits to GEM/CTM. See appropriate wiring diagram in BODY CONTROL MODULES article. (5) This DTC may also be present from GEM/CTM wiggle test. (6) Check wiring harness for open and/or short circuits and repair as necessary. See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS article. (7) Perform appropriate test under SYSTEM TESTS in ANALOG INSTRUMENT CLUSTER - EXPLORER & MOUNTAINEER article. (8) Check wiring harness for open and/or short circuits and repair as necessary. See appropriate wiring diagram in WARNING SYSTEMS article. (9) Clear DTCs. Retrieve DTCs. If DTC B1342 is retrieved, replace GEM/CTM and retest system operation. (10) Check wiring harness for open and/or short circuits and repair as necessary. See appropriate wiring diagram in REAR WINDOW DEFOGGERS article. (11) See appropriate STEERING COLUMN SWITCHES article for testing procedures. (12) See appropriate POWER WINDOWS article for testing procedures. (13) See appropriate WIPER/WASHER SYSTEMS article for testing procedures. (14) See appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS for testing procedures. (15) Check wiring harness for open and/or short circuits and repair as necessary. See appropriate wiring diagram in REMOTE KEYLESS ENTRY SYSTEMS article. (16) Vehicle speed calibration data is not programmed into GEM/CTM. Use NGS tester configuration card help screen to program tire size and axle ratio. Retest system operation. If DTC B2141 is still present, replace GEM/CTM and retest system operation. | ||
| (1) | Vehicles equipped with 4WD and/or power windows are equipped with a GEM. All other vehicle are equipped with a CTM. |
| (2) | This code only applies to vehicles equipped with a GEM. |
| (3) | Perform TEST A: ALL POWER WINDOWS ARE INOPERATIVE in appropriate POWER WINDOWS article for testing procedures. |
| (4) | Check charging system. See appropriate GENERATORS article in STARTING & CHARGING SYSTEMS. Repair as necessary. If charging system is okay, fault is in power or ground circuits to GEM/CTM. See appropriate wiring diagram in BODY CONTROL MODULES article. |
| (5) | This DTC may also be present from GEM/CTM wiggle test. |
| (6) | Check wiring harness for open and/or short circuits and repair as necessary. See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS article. |
| (7) | Perform appropriate test under SYSTEM TESTS in ANALOG INSTRUMENT CLUSTER - EXPLORER & MOUNTAINEER article. |
| (8) | Check wiring harness for open and/or short circuits and repair as necessary. See appropriate wiring diagram in WARNING SYSTEMS article. |
| (9) | Clear DTCs. Retrieve DTCs. If DTC B1342 is retrieved, replace GEM/CTM and retest system operation. |
| (10) | Check wiring harness for open and/or short circuits and repair as necessary. See appropriate wiring diagram in REAR WINDOW DEFOGGERS article. |
| (11) | See appropriate STEERING COLUMN SWITCHES article for testing procedures. |
| (12) | See appropriate POWER WINDOWS article for testing procedures. |
| (13) | See appropriate WIPER/WASHER SYSTEMS article for testing procedures. |
| (14) | See appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS for testing procedures. |
| (15) | Check wiring harness for open and/or short circuits and repair as necessary. See appropriate wiring diagram in REMOTE KEYLESS ENTRY SYSTEMS article. |
| (16) | Vehicle speed calibration data is not programmed into GEM/CTM. Use NGS tester configuration card help screen to program tire size and axle ratio. Retest system operation. If DTC B2141 is still present, replace GEM/CTM and retest system operation. |
GENERIC ELECTRONIC MODULE/CENTRAL TIMER MODULE (GEM/CTM) DTC INDEX (1)
| DTC | Description | Perform Test |
|---|---|---|
| B1299 | Power Supply Sensor Circuit Short To Ground | (1) |
| B1342 | ECU Defective | (2) |
| B2373 | LED No. 1 Circuit Short To Voltage | (1) |
| B2477 | Module Configuration Failure | (3) |
| C1699 | Left Rear Sensor Circuit Short To Voltage | (1) |
| C1700 | Left Rear Sensor Circuit Failure | (1) |
| C1701 | Left Rear Sensor Fault | (1) |
| C1702 | Right Rear Sensor Circuit Short To Voltage | (1) |
| C1703 | Right Rear Sensor Circuit Failure | (1) |
| C1704 | Right Rear Sensor Circuit Fault | (1) |
| C1705 | Left Rear Center Sensor Circuit Short To Voltage | (1) |
| C1706 | Left Rear Center Sensor Circuit Failure | (1) |
| C1707 | Left Rear Center Sensor Circuit Fault | (1) |
| C1708 | Right Rear Center Sensor Circuit Short To Voltage | (1) |
| C1709 | Right Rear Center Sensor Circuit Failure | (1) |
| C1710 | Right Rear Center Sensor Circuit Fault | (1) |
| C1742 | Rear Sounder Circuit Failure | (1) |
| C1743 | Rear Sounder Circuit Short To Voltage | (1) |
| C1748 | Switch Input Circuit Short To Ground | (1) |
| C1920 | LED No. 1 Circuit Failure | (1) |
| (1) See PARKING AID SYSTEM - EXPLORER & MOUNTAINEER article for testing procedure. (2) Using NGS tester, retrieve and document all continuous DTCs. Clear DTCs. Perform parking aid module self-test. If DTC B1342 is retrieved again, replace parking aid module. (3) Using NGS tester, configure parking aid module module. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION. | ||
| (1) | See PARKING AID SYSTEM - EXPLORER & MOUNTAINEER article for testing procedure. |
| (2) | Using NGS tester, retrieve and document all continuous DTCs. Clear DTCs. Perform parking aid module self-test. If DTC B1342 is retrieved again, replace parking aid module. |
| (3) | Using NGS tester, configure parking aid module module. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION. |
PARKING AID MODULE DTC (PAM) DTC INDEX
| DTC | Proceed To |
|---|---|
| B1213 (Number Of Programmed Ignition Keys Below Minimum) | (1) |
| B1232 (Defective Transceiver) | (1) |
| B1600 (PATS Ignition Key Transponder Signal Not Received) | (1) |
| B1601 (PATS Received Incorrect Key Code From Transponder) | (1) |
| B1602 (PATS Received Invalid Key Code Format From Transponder) | (1) |
| B1681 (PATS Transceiver Signal Is Not Received) | (1) |
| B2103 (Antenna Not Connected) | (1) |
| B2139 (Security Identification Does Not Match Between PATS Module & PCM) | (1) |
| B2141 (No Security Identification Exchange Between PATS Module & PCM) | (1) |
| U1147 (Faulty SCP Link Or Incorrect PCM Calibration) | (1) |
| U1262 (Missing SCP Message) | (2) |
| (1) Perform appropriate test in PASSIVE ANTI-THEFT SYSTEMS - EXPLORER & MOUNTAINEER article. (2) Perform TEST L: NO MODULE/NETWORK COMMUNICATIONS - BUS LINK under SYSTEM TESTS. | |
| (1) | Perform appropriate test in PASSIVE ANTI-THEFT SYSTEMS - EXPLORER & MOUNTAINEER article. |
| (2) | Perform TEST L: NO MODULE/NETWORK COMMUNICATIONS - BUS LINK under SYSTEM TESTS. |
PASSIVE ANTI-THEFT SYSTEM (PATS) MODULE DTC INDEX
| DTC | Proceed To |
|---|---|
| B1309 (Door Lock Circuit Short To Ground) | (1) |
| B1341 (Door Unlock Circuit Short To Ground) | (1) |
| B1485 (Brake Pedal Input Circuit Short To Voltage) | (1) |
| B1522 (Hood Switch Circuit Short To Ground) | (2) |
| B1526 (Keypad Switch Circuit Short To Ground) | (1) |
| B1562 (Door Lock Cylinder Circuit Short To Ground) | (2) |
| B1629 (PRNDL Reverse Input Short To Voltage) | (1) |
| B1845 (Anti-Theft Ignition Lock Switch Failure) | (3) |
| B2425 (Keyless Entry Out Of Synchronization) | (1) |
| (1) Check for open and short circuits. See appropriate wiring diagram in REMOTE KEYLESS ENTRY SYSTEMS article. (2) Repair anti-theft system as necessary. See ACTIVE ANTI-THEFT SYSTEMS - EXPLORER & MOUNTAINEER article. (3) Disregard DTC B1845. This is an invalid DTC. | |
| (1) | Check for open and short circuits. See appropriate wiring diagram in REMOTE KEYLESS ENTRY SYSTEMS article. |
| (2) | Repair anti-theft system as necessary. See ACTIVE ANTI-THEFT SYSTEMS - EXPLORER & MOUNTAINEER article. |
| (3) | Disregard DTC B1845. This is an invalid DTC. |
REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DTC INDEX
| DTC | Description | Perform Test |
|---|---|---|
| B1231 | RCM Crash Data Memory Full | (1) |
| B1342 | ECU Defective | (1) |
| B1869 | Air Bag Indicator Inoperative | (1) |
| B1870 | Air Bag Indicator Short To Voltage | (1) |
| B1887 | Driver's Side Air Bag Circuit Short To Ground | (1) |
| B1888 | Passenger's Side Air Circuit Bag Short To Ground | (1) |
| B1891 | Air Bar Tone Warning Indicator Circuit Open Or Short To Ground | (1) |
| B1892 | Air Bag Tone Warning Indicator Circuit Open Or Short To Ground | (1) |
| B1916 | Driver's Side Air Bag Circuit Short To Voltage | (1) |
| B1921 | RCM Bracket Ground Resistance High | (1) |
| B1925 | Passenger's Side Air Bag Circuit Short To Voltage | (1) |
| B1932 | Driver's Side Air Bag Circuit Resistance High | (1) |
| B1933 | Passenger's Side Air Bag Circuit Resistance High | (1) |
| B1934 | Driver's Side Air Bag Circuit Resistance Low | (1) |
| B1935 | Passenger's Side Air Bag Circuit Resistance Low | (1) |
| B1901 | Front External Crash Sensor Short To Ground | (1) |
| B1941 | Front External Crash Sensor Open Or Short To Voltage | (1) |
| B1992 | Driver Side Air Bag Circuit Short To Battery Or Ignition | (1) |
| B1993 | Driver Side Air Bag Circuit Short To Ground | (1) |
| B1994 | Driver Side Air Bag Circuit High Resistance | (1) |
| B1995 | Driver Side Air Bag Circuit Low Resistance | (1) |
| B1996 | Passenger Side Air Bag Circuit Short To Battery Or Ignition | (1) |
| B1997 | Passenger Side Air Bag Circuit Short To Ground | (1) |
| B1998 | Passenger Side Air Bag Circuit High Resistance | (1) |
| B1999 | Passenger Side Air Bag Circuit Low Resistance | (1) |
| B2440 | Passenger Side Crash Sensor Mounting Failure | (1) |
| B2441 | Driver Side Crash Sensor Mounting Failure | (1) |
| B2444 | Driver Side Crash Sensor Internal Fault | (1) |
| B2445 | Passenger Side Crash Sensor Internal Fault | (1) |
| C1414 | Incorrect Vehicle Identification Code | (1) |
| U2017 | Driver Side Crash Sensor Communication Fault | (1) |
| U2018 | Passenger Side Crash Sensor Communication Fault | (1) |
| (1) Repair supplemental restraint system as necessary. See 1999 FORD MOTOR CO. AIR BAG RESTRAINT SYSTEM article in RESTAINTS. | ||
| (1) | Repair supplemental restraint system as necessary. See 1999 FORD MOTOR CO. AIR BAG RESTRAINT SYSTEM article in RESTAINTS. |
RESTRAINT CONTROL MODULE (RCM) DTC INDEX
| DTC | Description | Perform Test |
|---|---|---|
| B1342 | 4WABS Defective | (1) |
| B1485 | Brake Pedal Position Switch Circuit Failure | (2) |
| B1676 | Battery Voltage Out Of Range | (3) |
| B2141 | Vehicle Speed Calibration Data Not Programmed Into Module | (4) |
| C1095 | Hydraulic Pump Motor Circuit Failure | (3) |
| C1102 | G-Switch Circuit Failure | (3) |
| C1145 | Right Front ABS Sensor Circuit Failure | (3) |
| C1155 | Left Front ABS Sensor Circuit Failure | (3) |
| C1230 | Rear Front ABS Sensor Circuit Failure | (3) |
| C1233 | Left Front ABS Sensor Output Signal Missing | (3) |
| C1234 | Right Front ABS Sensor Output Signal Missing | (3) |
| C1237 | Rear ABS Sensor Output Signal Missing | (3) |
| (1) Using NGS tester, retrieve and document all continuous. Perform Anti-Lock Brake System (ABS) module self-test. If DTC B1342 is retrieved again, replace ABS module. (2) Disregard DTC B1485. This is an invalid DTC. (3) Repair Anti-Lock Brake System (ABS). See appropriate ANTI-LOCK article in BRAKES. (4) Using NGS tester, perform calibration procedure. Repeat self-test. | ||
| (1) | Using NGS tester, retrieve and document all continuous. Perform Anti-Lock Brake System (ABS) module self-test. If DTC B1342 is retrieved again, replace ABS module. |
| (2) | Disregard DTC B1485. This is an invalid DTC. |
| (3) | Repair Anti-Lock Brake System (ABS). See appropriate ANTI-LOCK article in BRAKES. |
| (4) | Using NGS tester, perform calibration procedure. Repeat self-test. |
4-WHEEL ANTI-LOCK BRAKE SYSTEM (4WABS) MODULE DTC INDEX