Do the current condition(s) match the malfunction threshold?
YES
Go to step 3.
NO
Go to step 2.
2.
Problem verification:
Problem verification
?1.
Reinstall the fuel fill cap.
?2.
Start the engine.
?3.
Hold the engine speed at 3,000 rpm without load (CVT in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
?4.
Monitor the OBD STATUS for DTC P0453 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P0453 FTP Sensor Circuit High Voltage
Does the HDS indicate FAILED?
YES
The failure is duplicated. Go to step 3.
NO
If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the FTP sensor and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot. If the HDS indicates NOT COMPLETED, keep idling until a result comes on.?
3.
Determine possible failure area (FTP sensor, others):
Determine possible failure area (FTP sensor, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Disconnect the following connector.
FTP sensor 3P connector
?3.
Connect terminals A and B with a jumper wire.
Terminal A
FTP sensor 3P connector No. 1
Terminal B
FTP sensor 3P connector No. 2
?4.
Turn the vehicle to the ON mode.
?5.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
FTP SENSOR
More than 4.7
V
Do the current condition(s) match the malfunction threshold?
The P/TANK /PTANK wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If DTC P0453 goes away and the PCM was updated, troubleshooting is complete. If DTC P0453 goes away and the PCM was substituted, replace the original PCM.?
NO
Repair an open in the P/TANK /PTANK wire between the PCM (B43) and the FTP sensor.?
6.
Open wire check (SG5 line):
Open wire check (SG5 line)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Jump the SCS line with the HDS.
?3.
Disconnect the following connector.
PCM connector A (51P)
?4.
Connect terminals A and B with a jumper wire.
Terminal A
FTP sensor 3P connector No. 1
Terminal B
Body ground
?5.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
FTP sensor 3P connector: disconnected
FTP sensor 3P connector No. 1: jumped to body ground
The SG5 wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If DTC P0453 goes away and the PCM was updated, troubleshooting is complete. If DTC P0453 goes away and the PCM was substituted, replace the original PCM.?
NO
Repair an open in the SG5 wire between the PCM (A39) and the FTP sensor.?