LEMON Manuals: Even more car manuals for everyone
Home >> Suzuki >> 2007 >> SX4 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0122 / P0123: Throttle / Pedal Position Sensor / Switch "A" Circuit Low / High >> DTC Troubleshooting

DTC Troubleshooting

NOTE:
  • When DTC P0122 and P0222 are indicated together, it is possible that TP sensor power supply circuit is open.
  • When DTC P0123 and P0223 are indicated together, it is possible that TP sensor power supply circuit is shorted to power circuit and/or TP sensor ground circuit is open.
DTC TROUBLESHOOTING CHART

Step Action YES NO
1  Was "Engine and Emission Control System Check" performed?  Go to Step 2. Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2  TP sensor and its circuit check 
  1. Connect scan tool to DLC with ignition switch turned OFF.
  2. Turn ON ignition switch, check "TP Sensor 1 Volt" displayed on scan tool when accelerator pedal is released and depressed fully.

Is displayed TP sensor value as described voltage in  "SCAN TOOL DATA "?		 Intermittent trouble. Check for intermittent referring to INTERMITTENT AND POOR CONNECTION INSPECTION Go to Step 3.
3  Wire harness check 
  1. Turn ignition switch OFF position.
  2. Disconnect connectors from TP sensor and ECM.
  3. Check for proper terminal connection to electric throttle body assembly and ECM connectors.
  4. If connections are OK, check that TP sensor (main) circuit is as follows.
    • Wiring harness resistance of each TP sensor (main) signal, power supply and ground circuit is less than 3 Ω.
    • Insulation resistance of each TP sensor (main) signal and power supply circuit is infinity between TP sensor connector and vehicle body ground.
    • Insulation resistance of wire harness is infinity between TP sensor (main) signal terminal and each other terminal at TP sensor connector.
    • Circuit voltage of each TP sensor (main) signal, power supply and ground circuit is 0 - 1 V with ignition switch turned ON.

Are they in good condition? 		 Go to Step 4. Repair or replace defective wire harness.
4  TP sensor circuit voltage check 
  1. Connect connectors to ECM.
  2. Turn ignition switch ON position.
  3. Check that TP sensor circuit voltage is as follows.
    • Between TP sensor power supply terminal and TP sensor ground terminal is 5 V.
    • Between TP sensor (main) signal terminal and TP sensor ground terminal is 5 V.

Is it in good condition? 		 Go to Step 5. Substitute a known-good ECM and recheck.
5  TP sensor check 
  1. Check TP sensor for performance referring to ELECTRIC THROTTLE BODY ASSEMBLY ON-VEHICLE INSPECTION .

Is it in good condition? 		 Substitute a known-good ECM and recheck. Replace electric throttle body assembly.
scientia non olet · About LEMON Manuals