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DTC P0122: Throttle Position Sensor Circuit Low Input: Diagnosis

CAUTION: To prevent damage to scan tool, always turn the ignition switch to LOCK position before connecting or disconnecting scan tool.
NOTE: If PCM is replaced, immobilizer code registration must be performed. See PROGRAMMING  .

For diagnostic procedure, see Fig 1 -Fig 5 .

For intermittent diagnosis, see INTERMITTENT DIAGNOSTIC TROUBLE CODES  . For OBD-II drive cycle, other monitor pattern, see OTHER MONITOR  under OBD-II DRIVE CYCLES. For PCM location, see Figure . For PCM connector terminal view, see Figure .

To identify circuits referenced in testing, see ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. For testing of systems or components, see SYSTEM & COMPONENT TESTING article. For adjustments, see ON-VEHICLE ADJUSTMENTS article. For removal and installation of components, see REMOVAL & INSTALLATION article.

Fig 1: DTC P0122 Diagnostic Procedure (Step 1)
G00274392Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig 2: DTC P0122 Diagnostic Procedure (Steps 2-4)
G00274393Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig 3: DTC P0122 Diagnostic Procedure (Steps 5-6)
G00274394Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig 4: DTC P0122 Diagnostic Procedure (Steps 7-9)
G00274395Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig 5: DTC P0122 Diagnostic Procedure (Steps 10-11)
G00274396Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.