OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (HEIGHT CONTROL SWITCH - ECU AND BODY GROUND)
(a) Disconnect the A56 ECU connector.
(b) Disconnect the F24 height control switch (driver seat) connector.
(c) Measure the resistance according to the values in the table below.
Standard resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SUSPENSION CONTROL ECU
Up to 08/2009
SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: C1794: Height Control OFF Switch Circuit (Test Mode DTC)
C1794 - Height Control OFF Switch Circuit (Test Mode DTC)
DESCRIPTION
If the height control OFF switch is pressed when the vehicle is stopped with the engine running or the engine switch on (IG), vehicle height control
will be disabled and remain disabled even after the engine switch is turned off. In this case, "HEIGHT CONTROL OFF" will be displayed on the
multi-information display in the combination meter assembly. Pressing the height control OFF switch again with the engine running or the engine
switch on (IG) will resume the vehicle height control. If the vehicle speed reaches approximately 30 km/h when the vehicle height control is
disabled, vehicle height control will automatically resume.
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