LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2005 >> Verona EX >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0122 Throttle Position (TP) Sensor Low Input >> DTC Troubleshooting
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Troubleshooting

DIAGNOSIS PROCEDURE - DTC P0122 THROTTLE POSITION (TP) SENSOR LOW INPUT

Step Action Value(s) Yes No
1 Perform an On-Board Diagnostic (OBD) System Check.
Is the system check complete?		 - Go to Step 2. Go to "ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK ".
2
  1. Install the scan tool to the Data Link Connector (DLC).
  2. Turn the ignition switch to ON.
  3. Press the accelerator pedal while watching TPS for smooth changes in the voltage.

Does the scan tool show the TPS voltage change smoothly within the value specified?		 0.3 ~ 4.75 V Go to "DIAGNOSTIC AIDS ". Go to Step 3.
3
  1. Turn the ignition switch to LOCK.
  2. Disconnect the MTIA connector.
  3. Measure the voltage between the MTIA connector terminal 2 and 8.

Is the voltage within the specified value?		 4.75 ~ 5.0 V Go to Step 4. Go to Step 5.
4 Connect a fused jumper between the MTIA connector terminal 2 and 7.
Does the scan tool show the TPS voltage between the specified values?		 4.75 ~ 5.0 V Go to Step 10. Go to Step 8.
5 Measure the voltage between the MTIA connector terminal 2 and the ground.
Is the voltage below the specified value?		 5.0 V Go to Step 6. Go to Step 7.
6
  1. Turn the ignition switch to LOCK.
  2. Disconnect the ECM connector.
  3. Check for an open or a short in the wire between the MTIA connector terminal 8 and the ECM connector terminal 71.

Is the problem found?		 - Go to Step 9. Go to Step 11.
7 Check for an open or a short in the wire between the MTIA connector terminal 2 and the ECM connector terminal 50.
Is the problem found?		 - Go to Step 9. Go to Step 11.
8 Check for an open or a short in the wire between the MTIA connector terminal 7 and the ECM connector terminal 29.
Is the problem found?		 - Go to Step 9. Go to Step 11.
9
  1. Repair the wire or the connector terminal as needed.
  2. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs).
  3. Perform an On-Board Diagnostic (OBD) System Check.

Is the repair complete?		 - System OK -
10
  1. Replace the MTIA.
  2. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs).
  3. Perform an On-Board Diagnostic (OBD) System Check.

Is the repair complete?		 - System OK -
11
  1. Turn the ignition switch to LOCK.
  2. Replace the ECM.
  3. Perform an On-Board Diagnostic (OBD) System Check.

Is the repair complete?		 - System OK -
scientia non olet · About LEMON Manuals