C1381

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1381: Acceleration Sensor Power Supply Voltage Malfunction
C1381 - Acceleration Sensor Power Supply Voltage Malfunction

DESCRIPTION

This DTC is stored when the skid control ECU receives a sensor supply voltage malfunction signal from the yaw rate and acceleration sensor (for separate type) or yaw rate and acceleration sensor (airbag sensor assembly) (for built-in type).

WIRING DIAGRAM

Refer to DTCs C1234 and C1472 C1234.

INSPECTION PROCEDURE

PROCEDURE

1. CONFIRM YAW RATE AND ACCELERATION SENSOR TYPE

(a) Confirm the yaw rate and acceleration sensor type.

Result:

B -- CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.

(b) Disconnect the yaw rate and acceleration sensor connector.

(c) Turn the ignition switch to ON.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL)

(a) Turn the ignition switch off.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

HINT
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts Problem Symptoms Table.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)

OK -- REPLACE YAW RATE AND ACCELERATION SENSOR Removal

4. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.

(b) Disconnect the yaw rate and acceleration sensor (airbag sensor assembly) connector.

(c) Turn the ignition switch to ON.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL)

(a) Turn the ignition switch off.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration