U–58
ON-BOARD DIAGNOSTIC
Diagnostic Procedure
End Of Sie
DTC 12
A6E857001038W07
Diagnostic Procedure
End Of Sie
DTC 13
A6E857001038W08
Diagnostic Procedure
STEP INSPECTION ACTION
1 • Inspect evaporator temperature sensor.
• Is it okay?
Yes Go to next step.
No Replace evaporator temperature sensor.
2 • Disconnect climate control unit connector
(24-pin) and evaporator temperature sensor
connector.
• Is there open circuit between following
terminals of climate control unit connector
(24-pin) and evaporator temperature sensor
connector?
— 1Q—B
— 1I—A
Yes Repair wiring harness.
No Go to next step.
3 • Is there short circuit to ground between
terminal 1Q of climate control unit connector
(24-pin) and terminal B of evaporator
temperature sensor connector?
Yes Repair wiring harness.
No Connect climate control unit connector, then go to next step.
4 • Turn ignition switch to ON position.
• Measure voltage at terminal 1Q of climate
control unit connector (24-pin).
• Is voltage approximately 5 V?
Yes This system is normal at present. (Erase the past failure
from memory.)
No Replace climate control unit.
DTC 12 Ambient temperature sensor system inspection
POSSIBLE
CAUSE
• Ambient temperature sensor malfunction
• Climate control unit malfunction
• Open or short circuit between ambient temperature sensor and climate control unit
STEP INSPECTION ACTION
1 • Is resistance between terminals 1I and 1K of
climate control unit connector (24-pin) as
indicated below?
— 122 ohms—182 kilohms
Yes Replace climate control unit.
No Go to next step.
2 • Inspect ambient temperature sensor.
• Is it okay?
Yes Repair wiring harness.
No Replace ambient temperature sensor.
DTC 13 Ambient temperature sensor system inspection
POSSIBLE
CAUSE
• Ambient temperature sensor malfunction
• Climate control unit malfunction
• Open or short circuit between ambient temperature sensor and climate control unit
STEP INSPECTION ACTION
1 • Inspect ambient temperature sensor.
• Is it okay?
Yes Go to next step.
No Replace ambient temperature sensor.
2 • Disconnect climate control unit connector
(24-pin) and ambient temperature sensor
connector.
• Is there open circuit between following
terminals of climate control unit connector
(24-pin) and ambient temperature sensor
connector?
— 1K—B
— 1I—A
Yes Repair wiring harness.
No Go to next step.
3 • Is there short circuit to ground between
terminal 1K of climate control unit connector
(24-pin) and terminal B of ambient
temperature sensor connector?
Yes Repair wiring harness.
No Connect climate control unit connector, then go to next step.
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