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TROUBLE DIAGNOSIS FOR SYMPTOMS TF-31 < SERVICE INFORMATION > C E F G H I J K L M A B TF N O P 2. Disconnect AWD control unit harness connector. 3. Turn ignition switch “ON”. (Do not start engine.) 4. Check voltage between AWD control unit harness connector ter- 5. Turn ignition switch “OFF”. 6. Check voltage between AWD control unit harness connector ter- OK or NG OK >> GO TO 3. NG >> Check the following. If any items are damaged, repair • 10A fuse [No. 12 or 21, located in the fuse block (J/B)] minal 7 • Ignition switch. Refer to . 3. CHECK AWD CONTROL UNIT GROUND CIRCUIT 1. Turn ignition switch “OFF”. 2. Disconnect AWD control unit harness connector. 3. Check continuity between AWD control unit harness connector Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK AWD CONTROL UNIT Check AWD control unit input/output signal. Refer to TF-20, "AWD Control Unit Input/Output Signal Reference OK or NG OK >> GO TO 5. NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts. 5. CHECK OUTPUT SIGNAL WITH UNIFIED METER AND A/C AMP. With CONSULT-III 1. Turn ignition switch “ON”. (Do not start engine.) 2. Select “DATA MONITOR” mode for “METER A/C AMP” with CONSULT-III. Connector Terminal Voltage (Approx.) M92 7 - Ground Battery voltage 9 - Ground SDIA2319E Connector Terminal Voltage (Approx.) M92 7 - Ground 0V 9 - Ground Battery voltage SDIA2320E Continuity should exist. SDIA1883E |