2. CHECK HARNESS AND CONNECTOR (EXHAUST VALVE - SUSPENSION CONTROL ECU AND BODY GROUND)
(a) Turn the engine switch off.
(b) Disconnect the A54 ECU connector.
(c) Disconnect the O27 exhaust solenoid valve connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SUSPENSION CONTROL ECU
From 08/2009
SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: C1745: Exhaust Solenoid Valve Circuit Malfunction
C1745 - Exhaust Solenoid Valve Circuit Malfunction
DESCRIPTION
The exhaust valve built into the height control compressor assembly opens to discharge compressed air from the pneumatic cylinders into the
atmosphere according to the signal from the suspension control ECU.
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