C1800

C1800; RESERVOIR SOLENOID DRIVE CIRCUIT FAULT

G256924t7: CHECK THE SOLENOID DRIVE CIRCUIT FOR SHORT TO B+
1. Disconnect the ASU electrical connector, CR91.
2. Disconnect the valve block electrical connector, CR22.
3. Measure the voltage between CR22, pin 05 (BO) and GROUND.
^ Is the voltage greater than 3 volt?
-> Yes
REPAIR the short circuit. CLEAR the DTC. TEST the system for normal operation.
-> No

G256924t49: CHECK THE SOLENOID DRIVE CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between CR22, pin 05 (BO) 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

G256924t50: CHECK THE SOLENOID DRIVE CIRCUIT FOR HIGH RESISTANCE
1. Measure the resistance between CR22, pin 05 (BO) and CR91, pin 08 (130).
^ 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 valve block.