Toyota Yaris: Stop And Start System / Analog to Digital Converter Circuit Voltage Out of Range (P060B1C,P060B49,P060B71)

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Engine & Hybrid System / Stop And Start / Stop And Start System / Analog to Digital Converter Circuit Voltage Out of Range (P060B1C,P060B49,P060B71)

DESCRIPTION

If an internal malfunction occurs in the engine stop and start ECU, it stores P060B1C, P060B49 or P060B71 and blinks the stop and start cancel indicator.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Memory	Note
P060B1C	Analog to Digital Converter Circuit Voltage Out of Range	Both of the following conditions are met for 0.7 seconds or more (1 trip detection logic): Ignition switch ON. Engine stop and start ECU has an internal malfunction.	Engine stop and start ECU	Blinks	DTC stored	SAE Code: P060B
P060B49	Analog to Digital Converter Internal Electronic Failure	Both of the following conditions are met for 0.7 seconds or more (1 trip detection logic): Ignition switch ON. Engine stop and start ECU has an internal malfunction.	Engine stop and start ECU	Blinks	DTC stored	SAE Code: P060B
P060B71	Analog to Digital Converter Actuator Stuck	Both of the following conditions are met for 0.7 seconds or more (1 trip detection logic): Ignition switch ON. Engine stop and start ECU has an internal malfunction.	Engine stop and start ECU	Blinks	DTC stored	SAE Code: P060B

CONFIRMATION DRIVING PATTERN

CONFIRMATION AFTER TROUBLESHOOTING

HINT:

If the cable is disconnected from the auxiliary battery terminal, stop and start control is prohibited until refresh charge is completed.
In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item Status of Auxiliary Battery Charge Control changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the auxiliary battery fluid temperature at 11°C (52°F) or higher, the refresh charge will be completed.)
If the GTS is not available and the Data List item Status of Auxiliary Battery Charge Control cannot be checked, charge the auxiliary battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.
If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.
After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.

(a) Clear the DTCs.

Powertrain > Stop and Start > Clear DTCs

(b) Start the engine and warm it up.

CAUTION:

When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

(d) Depress the brake pedal and stop the vehicle.

(e) Keep the engine stopped by stop and start control for 1 second or more.

(f) Depress the clutch pedal and start the engine.

(g) Check that DTCs are not output.

Powertrain > Stop and Start > Trouble Codes

STOP AND START SYSTEM OPERATION CHECK

Click here

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.
Click here
After replacing the engine stop and start ECU, perform learning of the external backup boost converter (eco run vehicle converter assembly).
Click here
After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.
Click here
Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

Using the GTS, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.
Click here
DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.
Click here

PROCEDURE

CLEAR DTC

(a) Clear the DTC.

Powertrain > Stop and Start > Clear DTCs

2.	CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P060B1C, P060B49 OR P060B71)

(a) Turn the ignition switch off and wait for 30 seconds or more.

(b) Turn the ignition switch to ON.

(d) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(e) Enter the following menus: Powertrain / Stop and Start / Trouble Codes.

(f) Read the DTCs.

Powertrain > Stop and Start > Trouble Codes

Result	Proceed to
DTC P060B1C, P060B49 or P060B71 is output	A
DTC P060B1C, P060B49 or P060B71 and other DTCs are output	B
DTCs are not output	C

REPLACE ENGINE STOP AND START ECU

GO TO DIAGNOSTIC TROUBLE CODE CHART

USE SIMULATION METHOD TO CHECK

Backup Boost Converter "A" Control CPU Signal Invalid (P060629)

DESCRIPTION The engine stop and start ECU can detect open circuits when signals such as the boost, standby request or overheating signal cannot be sent to the backup boost converter control IC from the stop and start control IC in the engine stop and start ECU...

Starter Relay Circuit Current Above Threshold (P061519)

DESCRIPTION When the engine is started by stop and start control, the engine stop and start ECU controls the starter assembly by activating the ST NO. 1 relay (for starter pinion operation) via voltage from terminal STA...

Other information:

Toyota Yaris XP210 (2020-2024) Owner's Manual: Hill Launch Assist (HLA)(If equipped)

Hill Launch Assist (HLA) is a function which assists the driver in accelerating from a stop while on a slope. When the driver releases the brake pedal and depresses the accelerator pedal while on a slope, the function prevents the vehicle from rolling...

Toyota Yaris XP210 (2020-2024) Owner's Manual: Emission Control System

This vehicle is equipped with an emission control system (the catalytic converter is part of this system) that enables the vehicle to comply with existing exhaust emissions requirements. Under U.S. federal law, any modification to the original-equipment emission control system before the first sale and registration of a vehicle is subject to penalties...