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DTC 07

BHE070201038W11

DTC 07 | Cabin temperature sensor system inspection
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POSSIBLE CAUSE | • Cabin temperature sensor malfunction • Open or short circuit in wiring harness between A/C amplifier and cabin temperature sensor

Diagnostic Procedure

STEP | INSPECTION | ACTION
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1 | • Inspect the cabin temperature sensor. (See CABIN TEMPERATURE SENSOR INSPECTION.) • Is it normal? | Yes | Go to the next step.
No | Replace the cabin temperature sensor. (See CABIN TEMPERATURE SENSOR REMOVAL/INSTALLATION.)
2 | • Disconnect the A/C amplifier connector (16-pin) and the cabin temperature sensor connector. • Is there an open circuit in the wiring harness between the following terminals of the A/C amplifier connector (16-pin) and the cabin temperature sensor connector? – 2L-B – 2P-A | Yes | Repair the wiring harness.
No | Go to the next step.
3 | • Is there a short circuit to ground in the wiring harness between A/C amplifier connector (16-pin) terminal 2L and cabin temperature sensor connector terminal B? | Yes | Repair the wiring harness.
No | Connect the A/C amplifier connector (16-pin) and go to the next step.
4 | • Turn the ignition switch to the ON position. • Inspect the voltage at the following A/C amplifier terminal (wiring harness side). – Terminal 2L (16-pin, cabin temperature sensor input signal) • Is the voltage normal? (Approx. 5 V) | Yes | The system is normal at present. (Clear the past malfunction from memory.)
No | Inspect the connection at the A/C amplifier connector (16-pin). (See A/C AMPLIFIER INSPECTION [FULL-AUTO AIR CONDITIONER].)