HV Relay Assembly

INSPECTION

1. SMR1 AND SYSTEM MAIN RESISTOR




a. Measure the resistance between the 3 (CON1. and 4 (GND) terminals of the connector for the relay drive of the HV relay assembly.

Standard resistance: 70 to 165 ohms (at -30°C (-22°F) to 80°C (176°F))

b. Increase battery voltage between the 3 (CON1. and 4 (GND) terminals of the connector for the relay drive of the HV relay assembly, and measure the resistance between the terminal of the HV battery side positive connector and the w/ convertor inverter assembly side positive terminal of the HV relay assembly.

HINT: The standard resistance indicates the resistance of the system main resistor.

Standard resistance: 28.5 to 31.5 ohms

2. SMR2




a. Measure the resistance between the 1 (CON2. and 4 (GND) terminals of the connector for the relay drive of the HV relay assembly.

Standard resistance: 20 to 60 ohms (at -35°C (-31°F) to 80°C (176°F))

b. Increase battery voltage between the 1 (CON2. and 4 (GND) terminals of the connector for the relay drive of the HV relay assembly, and measure the resistance between the terminal of the HV battery side positive connector and the w/ converter inverter assembly side positive terminal of the HV relay assembly.

Standard resistance: Below 1 ohm

3. SMR3




a. Measure the resistance between the 2 (CON3. and 4 (GND) terminals of the connector for the relay drive of the HV relay assembly.

Standard resistance: 20 to 60 ohms (at -35°C (-31°F) to 80°C (176°F))

b. Increase battery voltage between the 2 (CON3. and 4 (GND) terminals of the connector for the relay drive of the HV relay assembly, and measure the resistance between the terminal of the HV battery side negative connector and the w/ converter inverter assembly side negative terminal of the HV relay assembly.

Standard resistance: Below 1 ohm