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B1515

B1515

Common sensor ground, shorted to Batt+



Note


• The cabin temperature sensor's ground (pin 15), blended air temperature sensor's ground (pin 14) and solar sensor's ground (pin 35) are connected together in the ACC control module. In consequence, only one trouble code can be detected.

• This trouble code can give rise to the following consequential trouble codes: B1343, B1348 and B1353.


Conditions

Control module pins 14, 15 or 35 shorted to battery positive.

Diagnostic procedure


1. Connect the ISAT and verify the trouble codes by obtaining a "SENSOR GROUND" readout. Clear the trouble code if the voltage is less than 0.5 V. Check that the trouble code is not generated afresh.

2. Unplug the indoor temperature sensor's connector and obtain a "SENSOR GROUND" reading again. If the voltage is now less than 0.5 V the fault is in the indoor temperature sensor. Change the indoor temperature sensor.


3. Unplug the mixed air temperature sensor's connector and obtain a "SENSOR GROUND" reading. If the voltage is now less than 0.5 V the fault is in the mixed air temperature sensor. Change the mixed air temperature sensor.


4. Unplug the solar sensor's connector and obtain a "SENSOR GROUND" reading. If the voltage is now less than 0.5 V the fault is in the solar sensor. Change the solar sensor.


5. The fault is in the wiring harness. Locate and rectify the fault.