Toyota CH-R Service Manual: Shift Solenoid "G" Control Circuit Low (Shift Solenoid Valve SC) (P099B,P099C)

Toyota CH-R Service Manual / K114 Cvt / Continuously Variable Transaxle System / Shift Solenoid "G" Control Circuit Low (Shift Solenoid Valve SC) (P099B,P099C)

DESCRIPTION

Based on the signal received by the shift solenoid valve SC, the ECM uses the shift solenoid valve SLU to control the forward and reverse clutch pressure.

If there is an open or short in the shift solenoid valve SC circuit, the ECM stops sending current to the defective shift solenoid valve.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P099B	Shift Solenoid "G" Control Circuit Low (Shift Solenoid Valve SC)	While the vehicle is driven, there is a short in the shift solenoid valve SC circuit for 3 seconds (1 trip detection logic).	Wire harness or connector Continuously variable transaxle assembly (Shift solenoid valve SC) ECM	Comes on	DTC stored
P099C	Shift Solenoid "G" Control Circuit High (Shift Solenoid Valve SC)	While the vehicle is driven, there is an open in the shift solenoid valve SC circuit for 0.5 seconds (1 trip detection logic).	Wire harness or connector Continuously variable transaxle assembly (Shift solenoid valve SC) ECM	Comes on	DTC stored

MONITOR DESCRIPTION

These DTCs indicate an open or short in the shift solenoid valve SC circuit. If there is an open or short in the shift solenoid valve SC circuit, the ECM detects the malfunction, illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P099B: Shift solenoid valve SC / Range check P099C: Shift solenoid valve SC / Range check
Required sensors/Components	Continuously variable transaxle assembly (Shift solenoid valve SC)
Frequency of operation	Continuous
Duration Conditions	1 times
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

All

Battery voltage	8 V or more
Time after Battery voltage 8 V or more	0.5 seconds or more
Write Inhibit	permit
Time after Write status forbiddance to permit	0.5 seconds or more
Ignition switch	ON
Time after Ignition switch OFF to ON	0.5 seconds or more
Starter	OFF
Time after Starter ON to OFF	0.5 seconds or more

TYPICAL MALFUNCTION THRESHOLDS

P099B:

All of the following conditions are met:	3 seconds or more
Command to solenoid	ON
Time after command to solenoid ON to OFF	0.008192 seconds or more
Solenoid terminal voltage level (Shift solenoid valve SC)	Low

P099C:

All of the following conditions are met:	0.5 seconds or more
Command to solenoid	OFF
Time after command to solenoid ON to OFF	0.008192 seconds or more
Solenoid terminal voltage level (Shift solenoid valve SC)	High

COMPONENT OPERATING RANGE

Shift solenoid valve SC

Resistance: 11 to 15 Ω at 20°C (68°F)

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Perform initialization after replacing any parts related to the continuously variable transaxle system.
Click here
Check that no DTCs are stored after performing initialization.
Click here
Perform the universal trip to clear permanent DTCs.
Click here

HINT:

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

Drive the vehicle and confirm the lock-up on and off conditions according to Road Test.
Click here
Check for DTCs again.
Click here

PROCEDURE

1.	INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SC)

(a) Disconnect the C40 transmission wire connector.

*a	Component without harness connected (Transmission Wire)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
10 (SC) - Body ground	20°C (68°F)	11 to 15 Ω

GO TO STEP 4

2.	CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

(a) Disconnect the ECM connector.

*a	Front view of wire harness connector (to ECM)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C63-41 (SC) - Body ground	20°C (68°F)	11 to 15 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

3.	REPLACE ECM

(a) Replace the ECM.

Click here

PERFORM INITIALIZATION

4.	REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

(a) Replace the continuously variable transaxle assembly.

When Not Using the Engine Support Bridge
Click here
When Using the Engine Support Bridge
Click here

PERFORM INITIALIZATION

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