K313 CVT CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM P1586 Acceleration Sensor Malfunction | Toyota Corolla/Altis NZE17/ZRE17 2017 Service Manual

DESCRIPTION

The ECM determines the vehicle inclination based on a signal from the airbag ECU assembly (yaw rate and acceleration sensor). If a malfunction of the airbag ECU assembly (yaw rate and acceleration sensor) is determined based on a malfunction signal from the brake actuator assembly (skid control ECU), the ECM stores a DTC.

HINT:: ·

The airbag ECU assembly (yaw rate and acceleration sensor) signal is sent to the brake actuator assembly (skid control ECU) via CAN communication.

·

If CAN communication DTCs are output, perform troubleshooting for those DTCs first.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P1586	Acceleration Sensor Malfunction	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other DTC Detection Condition 1: 1. The ignition switch is ON. 2. At a vehicle speed 30 km/h (19 mph) or more, the difference between longitudinal G calculated based on the airbag ECU assembly (yaw rate and acceleration sensor) (G sensor) value and longitudinal G calculated based on the vehicle speed is more than 0.35 G for 60 seconds or more. 3. 3 seconds or more 4. 1-trip detection logic DTC Detection Condition 2: 1. The ignition switch is ON. 2. The airbag ECU assembly (yaw rate and acceleration sensor) signal does not change 16 times or more while the vehicle speed decreases from 30 km/h (19 mph) to 0 km/h (0 mph). 3. 3 seconds or more 4. 1-trip detection logic	· Airbag ECU assembly (Yaw rate and acceleration sensor) · Brake actuator assembly (Skid control ECU) · CAN communication system	Does not come on	DTC stored

WIRING DIAGRAM

Refer to DTC P1585

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>P1585

CAUTION / NOTICE / HINT

NOTICE:: ·

Perform initialization when parts related to the continuously variable transaxle are replaced.

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION

·

Check that no DTCs are stored after performing initialization.

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DTC CHECK / CLEAR

PROCEDURE

1.CHECK DTC OUTPUT

a.

Connect the GTS to the DLC3.

b.

Turn the ignition switch to ON.

c.

Turn the GTS on.

d.

Check for DTCs.

Powertrain > Engine and ECT > Trouble Codes: 50001 234

Result:

Result	Proceed to
DTC U0129 is not output	A
DTC U0129 is output	B

A

2.CHECK DTC OUTPUT (IN ADDITION TO DTC P1586)

B

GO TO CAN COMMUNICATION SYSTEM

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>DIAGNOSIS SYSTEM

2.CHECK DTC OUTPUT (IN ADDITION TO DTC P1586)

a.

Connect the GTS to the DLC3.

b.

Turn the GTS on.

c.

Turn the ignition switch to ON.

d.

Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs: 50002 234

e.

Perform a road test where the vehicle is driven at 30 km/h (19 mph) or more, the brakes are applied at least 16 times and the vehicle is finally stopped.

f.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Powertrain > Engine and ECT > Trouble Codes: 50001 234

g.

Read the DTCs using the GTS.

HINT:: If any DTCs other than P1586 are output, perform troubleshooting for those DTCs first.

Result:

Result	Proceed to
Only DTC P1586 is output	A
DTC P1586 and other DTCs are output	B

A

3.READ VALUE USING GTS (G SENSOR)

B

GO TO DTC CHART

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DIAGNOSTIC TROUBLE CODE CHART

3.READ VALUE USING GTS (G SENSOR)

a.

Connect the GTS to the DLC3.

b.

Turn the ignition switch to ON.

c.

Turn the GTS on.

d.

Enter the following menus: Powertrain / Engine and ECT / Data List / Primary.

e.

According to the display on the GTS, read the Data List.

Powertrain > Engine and ECT > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
G Sensor	Converted output voltage of G sensor	min.: 0 V max.: 79.998 V	Displays converted voltage of G sensor · 2.31 V to 2.69 V: Vehicle on level ground · 1.88 V to 2.5 V: Decelerating · 2.5 V to 3.11 V: Accelerating · Set to 1.87 V: G sensor malfunction · Set to 1.87 V: Communication malfunction	-

Powertrain > Engine and ECT > Data List

Tester Display
G Sensor

50003 234 410

Result:

Result	Proceed to
Data List value is not normal	A
Data List value is normal	B

A

4.REPLACE AIRBAG ECU ASSEMBLY

B

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR>COMPONENTS

4.REPLACE AIRBAG ECU ASSEMBLY

a.

Replace the airbag ECU assembly (yaw rate and acceleration sensor).

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>COMPONENTS

Result:

Proceed to
NEXT

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION