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Home >> Suzuki >> 2011 >> Equator Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine General Information And Diagnosis (Qr25DE) - (3 Of 5) >> DTC P2122, P2123: APP Sensor >> Diagnosis Procedure
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Diagnosis Procedure

DIAGNOSIS PROCEDURE CHART

Step Action YES NO
1  CHECK GROUND CONNECTIONS 
  1. Turn ignition switch OFF.
  2. Loosen and retighten two ground screws on the body. Refer to [POWER SUPPLY AND GROUND CIRCUIT CHECK ].
G06444337Courtesy of SUZUKI OF AMERICA CORP.

OK or NG 		 GO TO 2. Repair or replace ground connections.
2  CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT 
  1. Disconnect accelerator pedal position (APP) sensor harness connector.
G06444338G06444339Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

  1. 2. Turn ignition switch ON.
  2. 3. Check voltage between APP sensor terminal 2 and ground with SDT or tester.
G06444338G06444339Courtesy of SUZUKI OF AMERICA CORP.SUZUKI OF AMERICA CORP.

Voltage: Approximately 5V 
OK or NG 		 GO TO 3. Repair open circuit, short to ground or short to power in harness or connectors.
3  CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT 
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check harness continuity between APP sensor terminal 4 and ECM terminal 82. Refer to WIRING DIAGRAM .

    Continuity should exist. 

  4. Also check harness for short to ground and short to power.

OK or NG 		 GO TO 4. Repair open circuit, short to ground or short to power in harness or connectors.
4  CHECK APP SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
  1. Check harness continuity between ECM terminal 106 and APP sensor terminal 3. Refer to WIRING DIAGRAM .

    Continuity should exist. 

  2. Also check harness for short to ground and short to power.

OK or NG 		 GO TO 5. Repair open circuit, short to ground or short to power in harness or connectors.
5  CHECK APP SENSOR 
Refer to [P2122, P2123 APP SENSOR ].
OK or NG 		 GO TO 7. GO TO 6.
6  REPLACE ACCELERATOR PEDAL ASSEMBLY 
  1. Replace accelerator pedal assembly.
  2. Perform "Accelerator Pedal Released Position Learning" in Accelerator Pedal Released Position Learning .
  3. Perform "Throttle Valve Closed Position Learning" in Throttle Valve Closed Position Learning .
  4. Perform "Idle Air Volume Learning" in Idle Air Volume Learning .
 INSPECTION END   
7  CHECK INTERMITTENT INCIDENT 
Refer to [SERVICE INFORMATION FOR ELECTRICAL INCIDENT: INTERMITTENT INCIDENT ]		 INSPECTION END 
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