Toyota Tundra (2015 year). Manual — part 600
OK
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
8 (S1) - Body ground
20°C (68°F)
11 to 15 Ω
NG
GO TO STEP 3
2.
CHECK HARNESS AND CONNECTOR (NO. 1 TRANSMISSION WIRE - ECM)
(a) Disconnect the D74 ECM connector.
(b) Measure the resistance according to the value(s) in the table
below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D74-7 (S1) - Body ground
20°C (68°F)
11 to 15 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM
3.
INSPECT SHIFT SOLENOID VALVE S1
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
(a) Remove shift solenoid valve S1.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION SPECIFIED CONDITION
Shift solenoid valve S1 connector terminal - Shift solenoid valve S1 body
20°C (68°F)
11 to 15 Ω
OK:
Valve moves and makes an operating noise.
NG
REPLACE SHIFT SOLENOID VALVE S1
OK
REPAIR OR REPLACE NO. 1 TRANSMISSION WIRE
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000W870EEX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P0976,P0977; Shift Solenoid
"B" Control Circuit Low (Shift Solenoid Valve S2); 2015 MY Tundra [08/2014 - ]
DTC
P0976
Shift Solenoid "B" Control Circuit Low (Shift Solenoid Valve S2)
DTC
P0977
Shift Solenoid "B" Control Circuit High (Shift Solenoid Valve S2)
DESCRIPTION
solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated
safely. Also, the ECM stops sending the current to the open or short circuited solenoid
.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
P0976
ECM detects short in solenoid valve S2 circuit 2 times when
solenoid valve S2 is operated (1 trip detection logic)
Short in shift solenoid
valve S2 circuit
Shift solenoid valve S2
ECM
P0977
ECM detects open in solenoid valve S2 circuit 2 times when
solenoid valve S2 is not operated (1 trip detection logic)
Open in shift solenoid
valve S2 circuit
Shift solenoid valve S2
ECM
MONITOR DESCRIPTION
These DTCs indicate an open or short in the shift solenoid valve S2 circuit. When there is an open or short circuit
in any shift solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores the DTC. When
the shift solenoid valve S2 is ON, if its resistance is 8 Ω or less, the ECM determines there is a short in the shift
solenoid valve S2 circuit.
When the shift solenoid valve S2 is OFF, if its resistance is 100 kΩ or more, the ECM determines there is an open
in the shift solenoid valve S2 circuit
.
MONITOR STRATEGY
Related DTCs
P0976: Shift solenoid valve S2/Range check (Low resistance)
P0977: Shift solenoid valve S2/Range check (High resistance)
Required sensors/Components
Shift solenoid valve S2
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Duration
0.128 seconds or more
MIL operation
Immediately
TYPICAL ENABLING CONDITIONS
All
The monitor will run whenever the following DTCs are not present
None
Battery voltage
8 V or more
Ignition switch
ON
Starter
OFF
P0976: Range Check (Low Resistance)
Command to shift solenoid valve S2
ON
P0977: Range Check (High Resistance)
Command to shift solenoid valve S2
OFF
TYPICAL MALFUNCTION THRESHOLDS
P0976: Range Check (Low Resistance)
Shift solenoid valve S2 resistance
8 Ω or less
P0977: Range Check (High Resistance)
Shift solenoid valve S2 resistance
100 kΩ or more
COMPONENT OPERATING RANGE
Shift solenoid valve S2 resistance
11 to 15 Ω at 20°C (68°F)
WIRING DIAGRAM
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
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