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DIAGNOSTICS - AUTOMATIC TRANSMISSION (A750E for 1GR-FE)
DIDVN-01
DTC P0985 Shift Solenoid "E" Control Circuit Low
(Shift Solenoid Valve SR)
DTC P0986 Shift Solenoid "E" Control Circuit High
(Shift Solenoid Valve SR)
CIRCUIT DESCRIPTION
Shifting from 1st to 5th is performed in combination with "ON" and "OFF" operation of the shift solenoid valves
SL1, SL2, S1, S2 and SR which are controlled by the ECM. If an open or short circuit occurs in either of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be
operated smoothly (See page DI-985).
DTC No. DTC Detection Condition Trouble Area
S Short in shift solenoid valve SR circuit
ECM detects short in solenoid valve SR circuit 2 times when
P0985 S Shift solenoid valve SR
solenoid valve SR is operated (1-trip detection logic)
S ECM
S Open in shift solenoid valve SR circuit
ECM detects open in solenoid valve SR circuit 2 times when
P0986 S Shift solenoid valve SR
solenoid valve SR is not operated (1-trip detection logic)
S ECM
MONITOR DESCRIPTION
These DTCs indicate an open or short in the shift solenoid valve SR circuit. When there is an open or short
circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and stores
the DTC. When the shift solenoid valve SR is on, if resistance is 8 or less, the ECM determines there is
a short in the shift solenoid valve SR circuit.
When the shift solenoid valve SR is off, if resistance is 100 k or more, the ECM determines there is an open
in the shift solenoid valve SR circuit (See page DI-985).
MONITOR STRATEGY
P0985 Shift solenoid valve SR/Range check (Low resistance)
Related DTCs
R l t d DTC
P0986 Shift solenoid valve SR/Range check (High resistance)
Required sensors/Components Shift solenoid valve SR
Frequency of operation Continuous
Duration 0.064 sec.
MIL operation Immediate
Sequence of operation None
DI-1069
DIAGNOSTICS - AUTOMATIC TRANSMISSION (A750E for 1GR-FE)
TYPICAL ENABLING CONDITIONS
Specification
Item
It
Minimum Maximum
The monitor will run whenever these
See page DI-963
DTCs are not present.
Range check (Low resistance)
Shift solenoid valve SR ON
Battery voltage 8 V or more -
Ignition switch ON
Starter OFF
Range check (High resistance)
Shift solenoid valve SR OFF
Battery voltage 8 V or more -
Ignition switch ON
Starter OFF
TYPICAL MALFUNCTION THRESHOLDS
Detection criteria Threshold
Range check (Low resistance)
Shift solenoid valve SR resistance 8 or less
Range check (High resistance)
Shift solenoid valve SR resistance 100 k or more
COMPONENT OPERATING RANGE
Parameter Standard value
Shift solenoid valve SR Resistance: 11 to 15 at 20
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