SFI SYSTEM, Diagnostic DTC:P158504
| DTC Code | DTC Name |
|---|---|
| P158504 | Acceleration Sensor Circuit System Internal Failure |
DESCRIPTION
The yaw rate and acceleration sensor is built into the airbag sensor assembly. The airbag sensor assembly sends yaw rate and acceleration sensor signals to the ECM and other ECUs via CAN communication. These signals are used for the neutral control of the CVT system. If a yaw rate and acceleration sensor malfunction signal is received from the airbag sensor assembly, this DTC is stored.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
P158504 |
Acceleration Sensor Circuit System Internal Failure |
Yaw rate and acceleration sensor malfunction signal (abnormal yaw rate and acceleration sensor value) is received from the airbag sensor assembly for 3 seconds or more (1 trip detection logic). |
|
Does not come on |
DTC stored |
SAE Code: P1585 |
CONFIRMATION DRIVING PATTERN
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Start the engine and turn the GTS on.
Drive the vehicle while accelerating and decelerating repeatedly, for several minutes.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the pending DTCs.
Tip:If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P158504.
Check the DTC judgment result.
GTS Display
Description
NORMAL
DTC judgment completed
System normal
ABNORMAL
DTC judgment completed
System abnormal
INCOMPLETE
DTC judgment not completed
Perform driving pattern after confirming DTC enabling conditions
N/A
Unable to perform DTC judgment
Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit
Tip:If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Perform initialization after replacing any parts related to the any system.
Check that no DTCs are stored after performing initialization.
Inspect the fuses for circuits related to this system before performing the following procedure.
Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P158504)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: System Select / Health Check.
Read the DTCs.
Result
Result
Proceed to
DTC P158504 is output
A
DTC P158504 and other DTCs are output
B
Tip:If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.
If any DTCs other than P158504 are output, troubleshoot those DTCs first.
B GO TO DTC CHART
INSPECT AIRBAG SENSOR ASSEMBLY (CHECK SENSOR INSTALLATION)
Check the airbag sensor assembly (yaw rate and acceleration sensor) installation condition.
OK
The airbag sensor assembly is not tilted and its installation bolts are tightened to the specified torque, the airbag sensor assembly bracket is not deformed and there are no foreign objects under the airbag sensor assembly.
Result
Proceed to
OK
NG
NG REINSTALL OR REPLACE AIRBAG SENSOR ASSEMBLYClick here
CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIRBAG SENSOR ASSEMBLY)
Disconnect the airbag sensor assembly (yaw rate and acceleration sensor) connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection
Condition
Specified Condition
E14-21 (IG2) - Body ground
Ignition switch ON
11 to 14 V
Turn the ignition switch off.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
E14-25 (E1) - Body ground
Always
Below 1 Ω
E14-26 (E2) - Body ground
Always
Below 1 Ω
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR (AIRBAG SENSOR ASSEMBLY POWER SOURCE CIRCUIT)
REPLACE AIRBAG SENSOR ASSEMBLY
Replace the airbag sensor assembly (yaw rate and acceleration sensor).
Result
Proceed to
NEXT
NEXT PERFORM INITIALIZATIONClick here
REINSTALL OR REPLACE AIRBAG SENSOR ASSEMBLY
Reinstall or replace the airbag sensor assembly (yaw rate and acceleration sensor).
Result
Proceed to
NEXT
PERFORM INITIALIZATION
Perform the initialization.
Result
Proceed to
NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED (DTC P158504)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
Powertrain > Engine > Clear DTCs
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up.
Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
Result
Proceed to
DTC P158504 is output
A
DTCs are not output
B
B END