LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2008 >> XL7 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0111, P0112 or P0113 >> Circuit/System Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Testing

  1. Ignition OFF, disconnect the MAF/IAT sensor.
  2. Ignition OFF, remove the fuse that supplies B+ to circuit terminal X2-56 of the ECM.
    CAUTION: Do NOT use a test lamp to test the continuity of the circuit. Damage to the control module may occur due to excessive current draw.
  3. Test for less than 5 ohms between the low reference circuit terminal E and ground.
    • If greater than 5 ohms, test the low reference circuit for an open/high resistance, or for a short to voltage. If the circuit/connections test normal, replace the ECM.
  4. Install the fuse that supplies B+ to circuit terminal X2-56 of the ECM.
  5. Ignition ON, verify the scan tool IAT sensor parameter is at -40 °C (-40 °F).
    • If greater than -40 °C (-40 °F), test the signal circuit for a short to ground. If the circuit/connections test normal, replace the ECM.
      NOTE: If the fuse in the jumper wire opens, the signal circuit is shorted to a voltage and the sensor may be damaged.
  6. Ignition ON, install a 3A fused jumper wire between the signal circuit terminal D and ground circuit terminal C. Verify the scan tool IAT sensor parameter is greater than 134 °C (274 °F).
    • If less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit/connections test normal, replace the ECM.
  7. If all circuits/connections test normal, test or replace the MAF/IAT sensor.
scientia non olet · About LEMON Manuals