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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) SEC-207 < ECU DIAGNOSIS INFORMATION > [WITH INTELLIGENT KEY SYSTEM] C D E F G H I J L M A B SEC N O P If No CAN Communication Is Available With BCM *: Only for models with steering lock unit. IGNITION RELAY MALFUNCTION DETECTION FUNCTION • IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it. coil circuit. • If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to alert the user to the ignition relay malfunction when the ignition switch is turned OFF. FRONT WIPER CONTROL IPDM E/R detects front wiper stop position by a front wiper auto stop signal. Control part Fail-safe operation Cooling fan • Turns ON the cooling fan relay-2 and the cooling fan relay-3 when ignition switch is turned ON (Cooling fan operates at HI) • Turns OFF the cooling fan relay-1, the cooling fan relay-2 and the cooling fan relay-3 when the ignition switch is turned OFF (Cooling fan does not operate) A/C compressor A/C relay OFF Alternator Outputs the power generation command signal (PWM signal) 0% Control part Fail-safe operation Headlamp • Turns ON the headlamp low relay when the ignition switch is turned ON • Parking lamps • Turns ON the tail lamp relay when the ignition switch is turned ON Front wiper • The status just before activation of fail-safe control is maintained until the ignition switch is turned OFF while the front wiper is operating at LO or HI speed. • The wiper is operated at LO speed until the ignition switch is turned OFF if the fail- safe control is activated while the front wiper is set in the INT/AUTO mode and the Front fog lamps Front fog lamp relay OFF Horn Horn OFF Ignition relay The status just before activation of fail-safe is maintained. Starter motor Starter control relay OFF Steering lock unit * Steering lock relay OFF Voltage judgment IPDM E/R judgment Operation Ignition relay contact side Ignition relay excitation coil side ON ON Ignition relay ON normal — OFF OFF Ignition relay OFF normal — ON OFF Ignition relay ON stuck • Detects DTC “B2098: IGN RELAY ON” utes OFF ON Ignition relay OFF stuck Detects DTC “B2099: IGN RELAY OFF” |