Component Location
General Description

The 4WD vehicle measures the G-sensor signal to solve for 4WD vehicle unique problems. For example all 4 wheels are locked early on a low-friction road or control response is delayed when road friction coefficients vary. The HECU uses a filtered signal, as a supplementary value, to determine the road friction coefficient. This value is used for the accurate calculations of assumed vehicle speed, or precise division of control starting points.

DTC Description

The HECU monitors the G-sensor voltage continuosly,and sets this code if the voltage is either higher than the permissible normal value ( approx. 4.5 V ) or lower than the value ( approx. 0.6V ) for more than 250ms.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

● Voltage monitoring

● Open or short of G-Sensor circuit

● Faulty G-Sensor

Detect Mode

● Initial Check

● Outside the ABS control cycle

● Inside the ABS control cycle

● Diagnosis mode

● Failure mode

Enable Conditions

● When the voltage of G-sensor signal is >4.5V±0.1V or <0.6V±0.1V for 250msec continuously.

Fail Safe

● ABS/TCS/ESP functions are inhibited, EBD function is allowed and the ABS/TCS/ESP warning lamps are activated.

Schematic Diagram
note
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