C1427

C1427; RIGHT-HAND REAR AIR SPRING DRIVE CIRCUIT MALFUNCTION

G256924t23: CHECK THE RIGHT-HAND REAR AIR SPRING DRIVE CIRCUIT FOR SHORT TO B+
1. Disconnect the right-hand rear air spring electrical connector, CR23.
2. Measure the voltage between CR23, pin 02 (BG) and GROUND.
^ Is the voltage greater than 3 volt?
-> Yes
REPAIR the short circuit. CLEAR the DTC. TEST the system for normal operation.
-> No

G256924t24: CHECK THE RIGHT-HAND REAR AIR SPRING DRIVE CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between CR23, pin 02 (BG) and GROUND.
^ Is the resistance less than 10,000 ohms?
-> Yes
REPAIR the short circuit. CLEAR the DTC. TEST the system for
normal operation.
-> No

G256924t25: CHECK THE RIGHT-HAND REAR AIR SPRING DRIVE CIRCUIT FOR HIGH RESISTANCE
1. Disconnect the battery negative terminal.
2. Disconnect the ASU electrical connector, CR89.
3. Measure the resistance between CR23, pin 02 (BG) and CR89, pin 11 (BG).
^ Is the resistance greater than 5 ohms?
-> Yes
REPAIR the high resistance circuit. CLEAR the DTC. TEST the system for normal operation.
-> No
INSTALL a new air spring solenoid, CLEAR the DTC. TEST the system for normal operation.