Toyota Yaris: Active Torque Split Awd System / Linear Solenoid Power Supply System Circuit Voltage Out of Range (C120C1C)
DESCRIPTION
When a malfunction has occurred in the linear solenoid power source system, the AWD ECU assembly stores DTC C120C1C.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory |
|---|---|---|---|---|---|
| C120C1C | Linear Solenoid Power Supply System Circuit Voltage Out of Range | When the IG1 terminal voltage is 9.5 V or more and less than 17.0 V, the BSLC terminal voltage is less than 9.5 V for 1 second. |
| Displayed | Yes |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
-
When the AWD ECU assembly is replaced, before removing the AWD ECU assembly, it is necessary to perform ECU Data Save to save the original AWD ECU assembly information.
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-
After performing repairs, clear the DTCs and check that the DTCs are not output again.
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PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (BSLC TERMINAL) |
(a) Turn the ignition switch off.
(b) Disconnect the O119 AWD ECU assembly connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| O119-2 (BSLC) - Body ground | Always | 11 to 14 V |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 2. | CHECK HARNESS AND CONNECTOR (GND TERMINAL) |
(a) Turn the ignition switch off.
(b) Disconnect the O119 AWD ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| O119-1 (GND) - Body ground | Always | Below 1 Ω |
| OK |
 | REPLACE AWD ECU ASSEMBLY |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
4WD/AWD Range Actuator Temperature Sensor Circuit Range/Performance Circuit Voltage Out of Range (C11411C)
DESCRIPTION When a malfunction has occurred in the AWD coupling solenoid system, the AWD ECU assembly stores DTC C11411C. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory C11411C 4WD/AWD Range Actuator Temperature Sensor Circuit Range/Performance Circuit Voltage Out of Range
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Supply Voltage Circuit Circuit Voltage Out of Range (C123A1C)
DESCRIPTION When a malfunction has occurred in the power source circuit, the AWD ECU assembly stores DTC C123A1C. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory C123A1C Supply Voltage Circuit Circuit Voltage Out of Range
At a vehicle speed of 3 km/h (2 mph) or more, the IG1 terminal voltage is less than 9...
Other information:
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Break-In Period
No special break-in is necessary, but a few precautions in the first 600 miles (1,000 km) may add to the performance, economy, and life of the vehicle.
Do not race the engine. Do not maintain one constant speed, either slow or fast, for a long period of time. Do not drive constantly at full-throttle or high engine rpm for extended periods of time. Avoid unnecessary hard stops. Avoid full-throttle starts.