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Test M: No Module/Network Communication - 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 (Gray/Black wire). This is the International Standards Organization (ISO) 9141 diagnostic communications network circuit.
  1. Turn ignition switch to RUN position. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Gray/Black wire) at DLC. Measure voltage between terminals No. 7 (Gray/Black wire) and No. 16 (Orange/Yellow wire) at Data Link Connector (DLC). See Figure . If voltage is not indicated in both measurements, go to next step. If voltage is indicated in both measurements, replace Restraints Control Module (RCM).
  2. Turn ignition switch to LOCK position. Disconnect Anti-Lock Brake System (ABS) module harness connector, located in right front corner of engine compartment. Turn ignition switch to RUN position. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Gray/Black wire) at DLC. Measure voltage between terminals No. 7 (Gray/Black wire) and No. 16 (Orange/Yellow wire) at DLC. If voltage is not indicated in both measurements, go to next step. If voltage is indicated in both measurements, replace ABS module.
  3. Turn ignition switch to LOCK position. Disconnect in-line harness connector C211, located behind driver's side kick panel. See Figure . Turn ignition switch to RUN position. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Gray/Black wire) at DLC. Measure voltage between terminals No. 7 (Gray/Black wire) and No. 16 (Orange/Yellow wire) at DLC. If voltage is not indicated in both measurements, go to next step. If voltage is indicated in both measurement, repair short to ground or voltage in Gray wire between in-line harness connector C211 and ABS module.
  4. Turn ignition switch to LOCK position. Disconnect in-line harness connector C212, located behind driver's side kick panel. See Figure . Turn ignition switch to RUN position. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Gray/Black wire) at DLC. Measure voltage between terminals No. 7 (Gray/Black wire) and No. 16 (Orange/Yellow wire) at DLC. If voltage is indicated in either measurement, repair short to ground or voltage in Gray/Black wire between in-line harness connector C212 and DLC. If voltage is not indicated in either measurement, go to next step.
  5. Turn ignition switch to LOCK position. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect Restraints Control Module (RCM) harness connector C310a, located under center console. Connect in-line harness connector C212. Turn ignition switch to RUN position. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Gray/Black wire) at DLC. Measure voltage between terminals No. 7 (Gray/Black wire) and No. 16 (Orange/Yellow wire) at DLC. If voltage is indicated in either measurement, repair short to ground or voltage in wiring between in-line harness connector C212, RCM and in-line harness connector C211. If voltage is not indicated in either measurement, replace RCM.
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