Code No. C2114
Abnormality in G and yaw rate sensor operation voltage Code No. C2115 Abnormality
in G and yaw rate sensor operation voltage
caution
If there is any problem in the CAN bus lines, an incorrect
diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP
54C, Trouble code diagnosis ).
OPERATION
ASC-ECU supplies power to the G and yaw rate sensor at the terminal No. 1.
The G and yaw rate sensor outputs the signal to ASC-ECU via the special CAN bus
lines.
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set if any malfunction below is found:
Code No. C2114
When the power supply voltage applied from ASC-ECU to the G and yaw rate sensor
is not within the standard value range (low)
Code No. C2115
When the power supply voltage applied from ASC-ECU to the G and yaw rate sensor
is not within the standard value range (high)
PROBABLE CAUSES
Damaged wiring harness and connectors
G and yaw rate sensor malfunction
ASC-ECU malfunction
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnosis
Use M.U.T.-III to diagnose the CAN bus lines.
Q.
Is the check result normal?
Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ).
On completion, go to Step 2.
STEP 2. Diagnosis code recheck after resetting CAN bus lines
Q.
Are the diagnosis codes No. C2114 and C2115 set?
Go to Step 3.
This diagnosis is complete.
STEP 3. G and yaw rate sensor installation check
Check that the G and yaw rate sensor is installed correctly.
Q.
Is the check result normal?
Go to Step 4.
Reinstall the G and yaw rate sensor correctly.
STEP 4. Voltage measurement at C-30 G and yaw rate sensor connector
(1)Disconnect the connector, and measure at the wiring harness-side connector.
(2)Turn the ignition switch to the ON position.
(3)Measure the voltage between the terminal No. 1 and the body earth. OK: Approximately battery voltage
Q.
Is the check result normal?
Go to Step 7.
Go to Step 5.
STEP 5. Connector check: A-03 ASC-ECU connector, C-30 G and yaw rate
sensor connector
Q.
Is the check result normal?
Go to Step 6.
Repair the defective connector.
STEP 6. Wiring harness check between A-03 ASC-ECU connector terminal
No. 6 and C-30 G and yaw rate sensor connector terminal No. 1.
Check the open circuit in power supply circuit.
Q.
Is the check result normal?
Go to Step 7.
Repair the wiring harness.
STEP 7. Resistance measurement at C-30 G and yaw rate sensor connector
(1)Disconnect the connector, and measure at the wiring harness-side connector.
(2)Resistance between the terminal No. 5 and the body earth OK: Continuity exists (2 Ω or less)
Q.
Is the check result normal?
Go to Step 10.
Go to Step 8.
STEP 8. Connector check: A-03 ASC-ECU connector, C-30 G and yaw rate
sensor connector
Q.
Is the check result normal?
Go to Step 9.
Repair the defective connector.
STEP 9. Wiring harness check between A-03 ASC-ECU connector terminal
No. 31 and C-30 G and yaw rate sensor connector terminal No. 5
Check the earth wires for open circuit.
Q.
Is the check result normal?
Go to Step 10.
Repair the wiring harness.
STEP 10. M.U.T.-III data list
Check the following service data.
Item 08: Lateral G-sensor
Item 09: G sensor
Item 12: Deviation ratio sensor
Q.
Is the check result normal?
Go to Step 11.
Replace the G and yaw rate sensor, and then go to Step 11.
STEP 11. Check whether the diagnosis code is reset.
Q.
Are the diagnosis codes No. C2114 and C2115 set?
)
)
)
)
)
).
Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting