DTC DETECTION LOGIC 
DTC CONFIRMATION PROCEDURE
1.CHECK SELF DIAGNOSTIC RESULT
With CONSULT.
Is DTC C1121, C1123, C1125 or C1127 detected?
YES >> Proceed to diagnosis procedure. Refer to BRC "Diagnosis Procedure".
NO >> Inspection End.
Regarding Wiring Diagram information, refer to BRC "Wiring Diagram".
1.CONNECTOR INSPECTION
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace as necessary.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) BATTERY POWER SUPPLY
Check voltage between ABS actuator and electric unit (control unit) connector
E33 terminal 25 and ground. 
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunctioning components.
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control unit)
connector E33 terminals 13, 38 and
ground. 
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC "Removal and Installation".
NO >> Repair or replace malfunctioning components.
Fuel efficient driving tips
Follow these easy-to-use Fuel Efficient Driving
Tips to help you achieve the most fuel economy
from your vehicle.
1. Use Smooth Accelerator and Brake
Pedal Application
Avoid rapid starts and stops.
Use smooth, gentle accelerator and
brake application whenever possible.
Maintain constan ...
P0979 Shift solenoid C
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0979
Shift Solenoid C Control Circuit
Low
The following diagnosis conditions
are met, and the current
monitor reading of the TCM 2-4
brake solenoid valve is ...