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P0A84-123 HBB-49 < COMPONENT DIAGNOSIS > D E F G H I J K L M A B HBB N O P 2. Measure the resistance according to the value(s) in the table below. NOTE: When taking measurements with an electrical tester, do not apply excessive force to the tester probes to avoid damaging the fuse holder or terminals. 3. Turn ignition switch ON. 4. Measure the voltage according to the value(s) in the table below. NOTE: When taking measurements with an electrical tester, do not apply excessive force to the tester probes to avoid damaging the fuse holder or terminals. OK or NG OK >> GO TO 12. NG >> Repair or replace harness or connector. 12. CHECK HARNESS AND CONNECTOR (HV BATTERY FAN RELAY - BATTERY COOLING BLOWER) Measure the resistance according to the value(s) in the table below. NOTE: When taking measurements with an electrical tester, do not apply excessive force to the tester probes to avoid damaging the fuse holder or terminals. OK >> Repair or replace harness or connector. NG >> Replace the hybrid vehicle control ECU (Refer to HBC-644, "Removal and Installation" ). 13. CHECK WAVEFORM 1. Install the 15A fuse to the high voltage fuse and fusible link box. 2. Connect the battery cooling blower assembly connector. 3. Connect an oscilloscope between connector terminals 3 (SI0) and 4 (GNDO) of the battery cooling blower assembly. 4. Turn ignition switch ON. 5. Select “COOLING FAN SPD” in “ACTINE TEST” mode with CONSULT-III. 6. Select air volume mode 1 to 6 in “COOLING FAN SPD” to operate the battery cooling blower assembly. high voltage fuse and fusible link box Hybrid vehicle control ECU Resistance Connector Terminal Connector Terminal HV battery fan relay 2 E66 186 (FCTL) Below 1 Ω high voltage fuse and fusible link box Ground Voltage Connector Terminal HV battery fan relay 2 Ground Below 1 V Hybrid vehicle control ECU Ground Voltage Connector Terminal E66 186 (FCTL) Ground Below 1 V HV battery fan relay Battery cooling blower assembly Resistance Connector Terminal Connector Terminal B111 5 B128 1 (IGO) Below 1 Ω |