Suzuki Swift Sport 2004 Service & Repair Manual page 1421

DTC B1141 / DTC B1142 (No. 1141 / No. 1142): 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.
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).
DTC Troubleshooting
Step
1 Check outside air temperature sensor
1) Turn ignition switch to OFF position.
2) Disconnect connector from outside air temperature
sensor.
3) Check outside air temperature sensor for resistance
referring to "Outside Air Temperature Sensor Inspection
(If Equipped) in Section 9C".
Is it in good condition?
Action
Body Electrical Control System:
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
Yes
Go to Step 2.
10B-18
S7RS0BA204009
I4RS0AA20010-01
No
Replace outside air
temperature sensor.