DTC 41

DTC 41 - NO.1 HEIGHT CONTROL RELAY CIRCUIT


CIRCUIT DESCRIPTION





When raising of the vehicle height starts, a signal is sent from terminal RCMP of the ECU to switch the No. 1 height control relay on. As a result, current flows to the No.1 height control relay coil, the contacts in the relay close, and thus battery voltage is applied to the compressor, the compressor produces compressed air.





Once the ECU stores diagnostic trouble code 41 in memory, vehicle height control is not carried out until a normal signal is input to the ECU from the No.1 height control relay.

However, control is resumed if the ignition switch is turned off, then on again.

HINT: Since the terminal -RC of the ECU is also the ground terminal for the exhaust valve, when there is an open circuit at the terminal -RC, exhaust valve malfunction diagnostic trouble code "35" may be output.





*1: However, when diagnostic trouble code 41 is displayed, check and replace suspension ECU.

DIAGNOSTIC CHART





WIRING DIAGRAM

Step 1:

Step 2:

INSPECTION PROCEDURE