DTC Troubleshooting: P0222
DTC P0222: TP Sensor B Circuit Low Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P0222 TP Sensor B Circuit Low Voltage
   

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
TP SENSOR B
Less than 0.3
V
    

Do the current condition(s) match the threshold?

     
YES
     
     
     
The failure is duplicated. Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot.?
2.
Determine possible failure area (THL2 line, others):

Determine possible failure area (THL2 line, others)
?1.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
P0122 TP Sensor A Circuit Low Voltage
   
P0222 TP Sensor B Circuit Low Voltage
   

Are DTC P0122 and P0222 indicated at the same time?

     
YES
     
     
     
Go to step 4.
     
NO
     
     
     
Go to step 3.
3.
Shorted wire check (THL2 line):

Shorted wire check (THL2 line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Jump the SCS line with the HDS, and wait more than 1 minute.


?3.
Disconnect the following connectors.
PCM connector E (80P)
Throttle body 6P connector

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
PCM connector E (80P): disconnected
 
Throttle body 6P connector: disconnected
Test point 1
Throttle body 6P connector No. 4
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
Repair a short in the THL2 wire between the PCM (E51) and the throttle body.?
     
NO
     
     
     
The THL2 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If DTC P0222 goes away and the PCM was substituted, replace the original PCM.?
4.
Determine possible failure area (VCC3 line, throttle body):

Determine possible failure area (VCC3 line, throttle body)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Throttle body 6P connector

?3.
Turn the vehicle to the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
Throttle body 6P connector: disconnected
Test point 1
Throttle body 6P connector No. 5
Test point 2
Body ground


Is there about 5.0 V?

     
YES
     
     
     
     
NO
     
     
     
Go to step 5.
5.
Open wire check (VCC3 line):

Open wire check (VCC3 line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Jump the SCS line with the HDS, and wait more than 1 minute.


?3.
Disconnect the following connector.
PCM connector E (80P)

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Throttle body 6P connector: disconnected
 
PCM connector E (80P): disconnected
Test point 1
Throttle body 6P connector No. 5
Test point 2
PCM connector E (80P) No. 75


Is there continuity?

     
YES
     
     
     
The VCC3 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If DTC P0222 goes away and the PCM was substituted, replace the original PCM.?
     
NO
     
     
     
Repair an open in the VCC3 wire between the PCM (E75) and the throttle body.?