NR Series ENGINE CONTROL SFI SYSTEM P158504 Acceleration Sensor Circuit System Internal Failure
DESCRIPTION
The yaw rate and acceleration sensor is built into the airbag sensor with ECU assembly. The airbag sensor with ECU 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 with ECU 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 with ECU assembly for 3 seconds or more (1 trip detection logic). | ·
Airbag sensor with ECU assembly ·
CAN communication system ·
Wire harness or connector ·
ECM |
Does not come on | DTC stored | SAE Code:
P1585 |
CONFIRMATION DRIVING PATTERN
- HINT:
- ·
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
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 [A].
Turn the GTS on.
Drive the vehicle while accelerating and decelerating repeatedly, for several minutes [B].
Enter the following menus: Powertrain / Engine / Trouble Codes [C].
Read the pending DTCs.
- HINT:
- ·
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 |
- HINT:
- ·
If the judgment result is NORMAL, the system is normal.
·If the judgment result is ABNORMAL, the system is malfunctioning.
·If the judgment result is INCOMPLETE, perform steps [B] through [C] again.
·[A] to [C]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
·When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
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.
- HINT:
-
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
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
- HINT:
- ·
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.
A
B
Check the airbag sensor with ECU assembly installation condition.
- OK:
The airbag sensor with ECU assembly is not tilted and its installation bolts are tightened to the specified torque, the airbag sensor with ECU assembly bracket is not deformed and there are no foreign objects under the airbag sensor with ECU assembly.
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to Yaw Rate and Acceleration Sensor) |
Disconnect the 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 I47-36 (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 I47-33 (E1) - Body ground Always Below 1 Ω I47-32 (E2) - Body ground Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
Replace the airbag sensor with ECU assembly.
- Result:
Proceed to NEXT
NEXT
Reinstall or replace the airbag sensor with ECU assembly.
- Result:
Proceed to NEXT
NEXT
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
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
- 50001 372
- Result:
Result Proceed to DTCs are not output A DTC P158504 is output B
A
B