Dtc B1141 / Dtc B1142 / Dtc B1143 - Suzuki GRAND VITARA Owner's Manual

10B-16 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
1
G30
12 11 10 9 8 7 6
24 23 22 21 20 19 18 17
G32
6 5 4 3 2
15 14 13 12 11 10 9
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).
2
5V
WHT/BLK
G31-24
BLK/RED G31-21
5 4 3 2 1
16 15 14 13
1
8 7
2
1. Outside air temperature sensor
2. BCM
3
20 19 18 17 16 15 14 13 12
40 39 38 37 36 35 34 33 32
3. 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
S5JB0AA204009
1
G31
11 10 9 8 7 6 5 4 3 2 1
31 30 29 28 27 26 25 24 23 22 21
I5JB0AA20007-01