Electronic control system (Honda HR-V 1)

Contents: Starter clutch function ⇊ Electrical diagram and contact…⇊ The arrangement of contacts in the…⇊

The electronic control system consists of a powertrain control module (PCM), sensors, three linear control solenoids and one shift lock solenoid. Electronic shift control provides convenience in all driving modes. The Grade Logic Control System is also provided to control shifting in the D range when driving uphill or downhill. The PCM is located under the instrument panel on the passenger side behind the wheel arch panel.

The PCM controls the transmission to reduce engine speed to maintain engine cooling capacity when accelerating at wide open throttle. If you continually drive at wide open throttle, the PCM adjusts the hydraulic pressure to the pulley to increase the ratio, which in turn reduces engine speed and maintains the designed cooling capacity. After driving the vehicle at a lower engine speed for a period of time, the PCM returns the pulley ratio to the original value.

The starting clutch serves to ensure smooth starting from a standstill. It provides the same inertia as conventional automatic transmissions. The operation of the starting clutch and inertia in positions D, L and R are controlled by the hydraulic pressure in the clutch, and electronic regulation of the hydraulic pressure in the clutch is carried out by the PCM. In order for the starting clutch to function adequately, the PCM regulates the hydraulic pressure in the starting clutch based on the vacuum value in the engine in position N, which is stored in memory.

Starter clutch function

The starting clutch generates two types of inertia, weak and strong, under the following conditions:

Low inertia conditions: Position D (including Sport mode), brake pedal depressed, vehicle stationary, throttle closed, engine coolant temperature above 75°C.
Strong inertia conditions: Other conditions than weak inertia conditions in position D.