Test No. 1 (Communication With Scan Tool Not Possible)

1. With a voltmeter, check for battery voltage at Data Link Connector (DLC) B-38, pin No. 16 (Red/Black wire). If battery voltage is not present, go to next step. If battery voltage is present, go to step 5).
2. Check for battery voltage, at Jumper Connector 1 (J/C 1) B-07, pin No. 6 (Red/Black wire). Connector B-07 is located under top left of instrument panel. If battery voltage is present, go to step 5). If battery voltage is not present, go to next step.
3. Check for battery voltage at connector B-07, pin No. 3 (Red/Black wire). If battery voltage exists, repair connector B-07 as required. If battery voltage does not exist, go to next step.
4. Check for battery voltage at junction block connector B-50, pin No. 10 (Red/Black wire). If battery voltage exists, repair open Red/Black wire.
5. Using an ohmmeter, check for continuity between ground and DLC connector B-38, pin No. 4 (Black wire) and pin No. 5 (Black/White wire). If no continuity exists, repair open to ground. If continuity exists, replace scan tool.

Fig 1: Alarm Horn Connector Terminals (A-45)

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Fig 2: Alarm Horn Relay Connector Terminals (B-45X)

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Fig 3: J/C 1 Connector Terminals (B-07)

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Fig 4: DLC Connector Terminals (B-38)

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Fig 5: ECU Connector Terminals (B-47)

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Fig 6: ECU Connector Terminals (B-48)

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Fig 7: Junction Block/Body Harness Connector Terminals (B-49)

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Fig 8: Junction Block/Body Harness Connector Terminals (B-50)

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Fig 9: Junction Block/Body Harness Connector Terminals (B-51)

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Fig 10: Body Harness/Control Harness Connector Terminals (B-63)

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Fig 11: Junction Block/Instrument Panel Connector Terminals (B-66)

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Fig 12: Junction Block/Front Harness Connector Terminals (B-75)

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Fig 13: Front Harness/Body Harness Connector Terminals (B-76)

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Fig 14: Combination Meter Connector Terminals (C-05)

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Fig 15: Inst. Panel Harness/Body Harness Connector Terminal (C-24)

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