Code 45 - Left Front Solenoid Valve Fault: Notes

EBCM may command left front solenoid valve in hydraulic modulator to 3 different positions. Valve position is determined by amount of current which is allowed to flow through solenoid coil.

Solenoid valve circuits receive power through valve relay on hydraulic modulator. Valve relay is engaged at key on and remains engaged throughout ignition cycle. Solenoid valve circuits should always have battery voltage available.

When ignition switch is in RUN position, power is supplied to EBCM. EBCM will complete an internal self-check before providing ground to valve relay. When valve relay is energized, battery power is supplied to solenoid valves.

Code 45 will be set when expected position of left front solenoid valve does not match commanded position from EBCM. Conditions which could cause Code 45 to set are damage to left front solenoid, open circuit No. 826 and short circuit to ground or battery on circuit No. 826.