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10B-18 Body Electrical Control System:
DTC B1141 / DTC B1142 / DTC B1143 (No.1141 / No. 1142/ No. 1143) Outside Air Temperature
(Ambient Temp.) Sensor Circuit Malfunction
Wiring Diagram
[A]: BCM connector viewed from harness side
1. Outside air temperature sensor
2. BCM
DTC Detecting Condition and Possible Cause
DTC detecting condition
DTC B1141 (DTC No. 1141):
Input signal from outside air temperature sensor is higher
than 4.88 V.
DTC B1142 (DTC No. 1142):
Input signal from outside air temperature sensor is lower
than 0.1 V.
DTC B1143 (DTC No. 1143):
Input signal from outside air temperature sensor is 0.1 -
0.27 V or 4.6 - 4.88 V.
Flow Test Description
Step 1: Check whether malfunction is in outside air temperature sensor.
Step 2: Check outside air temperature sensor input circuit.
Step 3: Check outside air temperature sensor ground circuit (for DTC B1141 and B1143).
3. Junction block assembly
4. Outside air temperature sensor connector
Possible cause
• Open in outside air temperature sensor circuit
• Outside air temperature sensor malfunction
• BCM malfunction
• Short in outside air temperature sensor circuit
• Outside air temperature sensor malfunction
• BCM malfunction
• High resistance in outside air temperature sensor
circuit
• Outside air temperature sensor malfunction
• BCM malfunction
S4RS0AA204022
I4RS0AA20010-
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