C1741

CIRCUIT DESCRIPTION

When the vehicle height starts to rise, a signal is sent from terminal RC of the ECU to switch the height control relay ON. As a result, current flows to the height control relay coil, the contacts in the relay close, and thus battery voltage is applied to the compressor, producing compressed air.

DTC Detecting Condition:

Once the ECU stores DTC C1741/41 in memory, the vehicle height control is not carried out until a normal signal is input to the ECU from the height control relay.

The control is resumed, however, if the ignition switch is turned OFF, then ON again.

Wiring Diagram:

Steps 1 - 2:

Steps 3 - 4:

Step 5:

INSPECTION PROCEDURE

HINT: Start the inspection from step 1 in case of using the LEXUS hand-held tester and start from step 2 in case of not using the LEXUS hand-held tester.