Yaris 2007

1.5L L4 VIN - Std 8

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Trouble Code: P0788



SHIFT/TIMING SOLENOID HIGH (SHIFT SOLENOID VALVE ST)

Possible Causes:



Open in shift solenoid valve ST circuit
 
Shift solenoid valve ST
 
ECM
 

Trouble Code: P0973



Shift Solenoid -A- Control Circuit Low (Shift Solenoid Valve S1)

Possible Causes:



Short in shift solenoid valve S1 circuit
 
Shift solenoid valve S1
 
ECM
 

Trouble Code: P0974



Shift Solenoid -A- Control Circuit High (Shift Solenoid Valve S1)

Possible Causes:



Open in shift solenoid valve S1 circuit
 
Shift solenoid valve S1
 
ECM
 

Trouble Code: P0976



Shift Solenoid -B- Control Circuit Low (Shift Solenoid Valve S2)

Possible Causes:



Short in shift solenoid valve S2 circuit
 
Shift solenoid valve S2
 
ECM
 

Trouble Code: P0977



SHIFT SOLENOID -B- CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S2)

Possible Causes:



Open in shift solenoid valve S2 circuit
 
Shift solenoid valve S2
 
ECM
 

Trouble Code: P2102



Throttle Actuator Control Motor Circuit Low

Possible Causes:



Open in throttle actuator circuit
 
Throttle actuator
 
ECM
 

Trouble Code: P2103



Throttle Actuator Control Motor Circuit High

Possible Causes:



Short in throttle actuator circuit
 
Throttle actuator
 
Throttle valve
 
Throttle body assembly
 
ECM
 

Trouble Code: P2111



Throttle Actuator Control System - Stuck Open

Possible Causes:



Throttle actuator
 
Throttle body assembly
 
Throttle valve
 

Trouble Code: P2112



Throttle Actuator Control System - Stuck Closed

Possible Causes:



Throttle actuator
 
Throttle body assembly
 
Throttle valve
 

Trouble Code: P2119



Throttle Actuator Control Throttle Body Range / Performance

Possible Causes:



Electronic throttle control system
 
ECM
 

Trouble Code: P2121



Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance

Possible Causes:



Accelerator Pedal Position (APP) sensor
 
ECM
 

Trouble Code: P2238



Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1)

Possible Causes:



Open or short in A/F sensor (sensor 1) circuit
 
A/F sensor (sensor 1)
 
A/F sensor heater (sensor 1)
 
Integration relay (EFI relay)
 
A/F sensor heater and EFI relay circuits
 
ECM
 

Trouble Code: P2239



Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1)

Possible Causes:



Open or short in A/F sensor (sensor 1) circuit
 
A/F sensor (sensor 1)
 
A/F sensor heater (sensor 1)
 
Integration relay (EFI relay)
 
A/F sensor heater and EFI relay circuits
 
ECM
 

Trouble Code: P2252



Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1)

Possible Causes:



Open or short in A/F sensor (sensor 1) circuit
 
A/F sensor (sensor 1)
 
A/F sensor heater (sensor 1)
 
Integration relay (EFI relay)
 
A/F sensor heater and EFI relay circuits
 
ECM
 

Trouble Code: P2253



Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1)

Possible Causes:



Open or short in A/F sensor (sensor 1) circuit
 
A/F sensor (sensor 1)
 
A/F sensor heater (sensor 1)
 
Integration relay (EFI realy)
 
A/F sensor heater and EFI relay circuits
 
ECM
 

Trouble Code: P2401



Evaporative Emission Leak Detection Pump Stuck OFF

Possible Causes:



Canister pump
 
module (Reference
 
orifice, leak detection
 
pump, vent valve)
 
Connector/wire
 
harness (Canister
 
pump module - ECM)
 
EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
 
ECM
 
module (Reference
 
orifice, leak detection
 
pump, vent valve)
 
Connector/wire
 
harness (Canister
 

Trouble Code: P2402



Evaporative Emission Leak Detection Pump Stuck ON

Possible Causes:



pump module - ECM)
 
EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
 
ECM
 

Trouble Code: P2610



ECM / PCM Internal Engine Off Timer Performance

Possible Causes:



ECM
 

Trouble Code: P2757



Torque Converter Clutch Pressure Control Solenoid Performance (Shift Solenoid Valve SLU)

Possible Causes:



Shift solenoid valve SLU remains open or closed
 
Valve body is blocked
 
Shift solenoid valve SLU
 
Torque converter clutch
 
Automatic transaxle (clutch, brake or gear etc.)
 
Line pressure is too low
 
ECM
 

Trouble Code: P2759



TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT ELECTRICAL (SHIFT SOLENOID VALVE SLU)

Possible Causes:



Open or short in shift solenoid valve SLU circuit
 
Shift solenoid valve SLU
 
ECM
 

Trouble Code: P2A00



A/F Sensor Circuit Slow Response (Bank 1 Sensor 1)

Possible Causes:



Open or short in A/F sensor circuit
 
A/F sensor
 
ECM
 

Trouble Code: U0073



Control Module Communication Bus OFF

Possible Causes:



CAN communication system
 

Trouble Code: U0100



Lost Communication with ECM / PCM

Possible Causes:



CAN communication system (Skid control ECU to ECM)
 

Trouble Code: U0123



Lost Communication with Yaw Rate Sensor Module

Possible Causes:



CAN communication system (Skid control ECU to yaw rate and acceleration sensor)
 

Trouble Code: U0124



Lost Communication with Lateral Acceleration Sensor Module

Possible Causes:



CAN communication system (Skid control ECU to yaw rate and acceleration sensor)
 

Trouble Code: U0126



Lost Communication with Steering Angle Sensor Module

Possible Causes:



CAN communication system (Skid control ECU to steering angle sensor)
 

Trouble Code: U0129



Lost Communication with Brake System Control Module

Possible Causes:



CAN communication system
 
Skid control ECU (ABS ECU)
 

 
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