Fig. 145: Gear Position VS Shift Status Graph
Fig. 146: Shift Solenoid Valve Driving Signal Combination Table
General Description
Shift solenoid valve B is installed in the transmission housing. It is controlled by the ON/OFF signal from
the powertrain control module (PCM) to apply line pressure to shift valve B. The signal from the PCM is
output to apply clutch pressure control pressure to the proper gear change clutch according to the gear
change schedule. When the signal to shift solenoid valve B from the PCM is ON, and line pressure is
discharged, shift valve B is inactive. When the signal to shift solenoid valve B from the PCM is OFF, and
line pressure is applied to shift valve B, it operates against the shift valve B spring. The PCM monitors the
input shaft (mainshaft) speed and the output shaft (countershaft) speed at the gear change determined by the
shift schedule. When an improper gear ratio is output compared to the predetermined gear change mode, a
shift solenoid valve B OFF failure is detected and a DTC is stored.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
2007 Acura RL
2007 ENGINE PERFORMANCE Advanced Diagnostics - RL
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Friday, June 05, 2009 2:32:05 PM
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