DTC Code | DTC Name |
---|---|
P0976 | Shift Solenoid "B" Control Circuit Low (Shift Solenoid Valve S2) |
P0977 | Shift Solenoid "B" Control Circuit High (Shift Solenoid Valve S2) |
DESCRIPTION
Shifting from 1st to 5th is performed in combination with the "ON" and "OFF" operation of the shift solenoid valves SL1, SL2, S1, S2 and SR which is controlled by the ECM. If an open or short circuit occurs in one of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated smoothly (In case of an open or short circuit, the ECM stops sending current to the circuit. For details, refer to the Fail-Safe Chart Click here.
DTC Code | DTC Detection Condition | Trouble Area |
---|---|---|
P0976 | The ECM detects a short in the solenoid valve S2 circuit 2 times when the solenoid valve S2 is operated (1 trip detection logic). |
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P0977 | The ECM detects an open in the solenoid valve S2 circuit 2 times when the solenoid valve S2 is not operated (1 trip detection logic). |
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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 higher, the ECM determines there is an open in the shift solenoid valve S2 circuit Click here.
WIRING DIAGRAM
INSPECTION PROCEDURE
Tech Tips
The shift solenoid valve S2 turns ON/OFF normally when the shift lever is in D.
ECM gear shift command | 1st | 2nd | 3rd | 4th | 5th |
Shift solenoid valve S2 | OFF | ON | ON | OFF | OFF |
PROCEDURE
INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE S2)
*a | Component without harness connected (Transmission Wire) |
Disconnect the transmission wire connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
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|
NG |
INSPECT SHIFT SOLENOID VALVE S2 Click here |
OK |
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
*a | Front view of wire harness connector (to ECM) |
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
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|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
REPLACE ECM Click here
INSPECT SHIFT SOLENOID VALVE S2
*a | Component without harness connected (Shift Solenoid Valve S2) |
Remove the shift solenoid valve S2.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
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Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating noise.
OK | ||||
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NG |
REPLACE SHIFT SOLENOID VALVE S2 Click here |
OK |
REPAIR OR REPLACE TRANSMISSION WIRE Click here