Acura RL. Manual - part 64
Fig. 210: Shift Solenoid Valve Driving Signal Combination Table
General Description
When shift solenoid valves A and D are turned ON, the hydraulic pressure circuit opens. When shift
solenoid valves B and C are turned OFF, the hydraulic pressure circuit opens. The hydraulic pressure circuit
supplies/discharges hydraulic pressure to/from each clutch according to the combination of the ON/OFF
status of those valves and the shift valves. The powertrain control module (PCM) commands the driver
circuit to turn on the shift solenoid valve. The circuit diagnoses malfunctions such as a circuit short or open,
and sends back a return signal during the PCM's command. A malfunction is detected when the return signal
does not match the PCM command to turn ON the shift solenoid valve, and a DTC is stored.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
MONITOR DESCRIPTION CHART
Enable Conditions
ENABLE CONDITIONS
Malfunction Threshold
The return signal does not match the command to turn ON shift solenoid valve B for at least 1 second.
Driving Pattern
Start the engine, shift to the P position, and wait for at least 1 second.
Diagnosis Details
Conditions for illuminating the MIL
When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the
PCM memory.
Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the
diagnostic runs.
The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by
disconnecting the battery.
Execution
Continuous
Sequence
None
Duration
1 second or more
DTC Type
One drive cycle, MIL ON, D indicator blinks
OBD Status
PASSED/FAILED/NOT COMPLETED (STILL TESTING)
Condition
Minimum
Maximum
Battery voltage
11.0 V
-
No active DTCs
P0977, P0979, P0980
2007 Acura RL
2007 ENGINE PERFORMANCE Advanced Diagnostics - RL
me
Friday, June 05, 2009 2:32:06 PM
Page 253 © 2005 Mitchell Repair Information Company, LLC.