( TF09EABK72100090122FAAT00 )
DTC Troubleshooting: P0122 (7)
DTC P0122:
 TP Sensor A Circuit Low Voltage
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Check TP SENSOR A in the DATA LIST with the HDS.
Is there about 0.3 V or less?
YES -
Go to Step 4 .
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body and the ECM/PCM.■
  1. Check for Temporary DTCs or DTCs with the HDS.
Are DTC P0122 and P0222 indicated at the same time?
YES -
Go to Step 10 .
NO -
Go to Step 5 .
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the throttle body 6P connector.
  1. Jump the SCS line with the HDS.
  1. Disconnect ECM/PCM connector C (49P).
  1. Check for continuity between throttle body 6P connector terminal No. 1 and body ground.
Is there continuity?
YES -
Repair short in the wire between the throttle body and the ECM/PCM (C20), then go to Step 18 .
NO -
Go to Step 23 .
  1. Measure the voltage between throttle body 6P connector terminal No. 2 and body ground.
Is there about 5 V?
YES -
Go to Step 16 .
NO -
Go to Step 11 .
  1. Turn the ignition switch to LOCK (0).
  1. Jump the SCS line with the HDS.
  1. Disconnect ECM/PCM connector C (49P).
  1. Disconnect the throttle body 6P connector.
  1. Check for continuity between ECM/PCM connector terminal C12 and throttle body 6P connector terminal No. 2.
Is there continuity?
YES -
Go to Step 23 .
NO -
Repair open in the wire between the throttle body and the ECM/PCM (C12), then go to Step 18 .
  1. Turn the ignition switch to LOCK (0).
  1. Reconnect all connectors.
  1. Turn the ignition switch to ON (II).
  1. Reset the ECM/PCM with the HDS.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0122 indicated?
YES -
Check for poor connections or loose terminals at the throttle body and the ECM/PCM, then go to Step 1 .
NO -
Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■
  1. Reconnect all connectors.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0122 indicated?
YES -
Check for poor connections or loose terminals at TP sensor A and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then recheck. If the ECM/PCM was substituted, go to Step 1 .
NO -
If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■