P1113

Intake air temperature sensor circuit malfunction - Lysholm compressor

[KJ]

Detection Conditions

• If the voltage from the intake air temperature sensor on the Lysholm compressor is above 4.9V and the intake air temperature sensor on the air box reads above 0 degrees C.
• If terminal A on the intake air temperature sensor on the Lysholm compressor reads higher than terminal B by 3.48V while the engine coolant temperature sensor reads above 80 degrees C, the intake air temperature on the air box reads above -10 degrees C, and the ignition key is ON.
• ECU reduces charged-air pressure but the intake air temperature sensor on the Lysholm compressor does not indicate a drop to 150 degrees C or below.

Diagnostic Support Notes

• This is a continuous monitor (CCM)
• Check engine indicator illuminates if the ECU detects the above malfunction condition during the first drive cycle
• PENDING CODE is not available
• FREEZE FRAME DATA is available
• DTC is stored in ECU memory

Possible Causes

• Intake air temperature sensor (Lysholm compressor) malfunction
• Poor connection at intake air temperature sensor (Lysholm compressor) or ECU connector
• Short to ground circuit between intake air temperature sensor (Lysholm compressor) terminal A and ECU
• Intake air temperature signal (Lysholm compressor) and intake air temperature ground (Lysholm compressor) circuit are shorted
• Open circuit between intake air temperature sensor (Lysholm compressor) terminal A and ECU
• Short to power circuit between intake air temperature sensor (Lysholm compressor) terminal A and ECU
• Open circuit between intake air temperature sensor (Lysholm compressor) terminal B and ECU
• Short to power circuit between intake air temperature sensor (Lysholm compressor) terminal B and ECU
• DTC P1540 detection
• ECU malfunction

[P1113 - From 2002 Mazda Millenia factory service manual]