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C1601 BATTERY POWER SUPPLY STC-19 < DTC/CIRCUIT DIAGNOSIS > C D E F H I J K L M A B STC N O P 2. Turn ignition switch ON. CAUTION: Never start the engine. 3. Check voltage between EPS control unit harness connector and ground. Is the inspection result normal? YES >> GO TO 4. NO >> GO TO 3. 3. CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (2) 1. Turn ignition switch OFF. 2. Check the 10A fuse (No. 5). 3. Check the harness for open or short between EPS control unit harness connector M53 terminal 4 and the 10A fuse (No. 5). Is the inspection result normal? YES >> Perform the trouble diagnosis for ignition power supply circuit. Refer to NO >> Repair or replace malfunctioning component. 4. CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (3) 1. Turn ignition switch OFF. 2. Check voltage between EPS control unit harness connector terminal and ground. 3. Turn ignition switch ON. CAUTION: Never start the engine. 4. Check voltage between EPS control unit harness connector and ground. Is the inspection result normal? YES >> GO TO 6. NO >> GO TO 5. 5. CHECK EPS CONTROL UNIT POWER SUPPLY CIRCUIT (4) 1. Turn ignition switch OFF. 2. Check the 60A fusible link (J). 3. Check the harness for open or short between EPS control unit harness connector E23 terminal 17 and the 60A fusible link (J). Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit. Refer to . EPS control unit — Voltage Connector Terminal M53 4 Ground Approx. 0 V EPS control unit — Voltage Connector Terminal M53 4 Ground Battery voltage EPS control unit — Voltage Connector Terminal E23 17 Ground Battery voltage EPS control unit — Voltage Connector Terminal E23 17 Ground Battery voltage |