Test Point 4
Test point 4Footwell blower outlet sensor
Open circuit
Short to ground
Fault code 23
Diagnosis conditions
No control module fault stored.
No fault with supply voltage (5 volts).
Outside temperature higher than - 30 �C.
Open circuit
1. Unplug connectors A and B from the heating/air-conditioning control.
2. Connect ohmmeter to connectors A 12 and B 5.
Display: approx. 2.8 k Ohms at 23 �C
3. Unplug connector from blower outlet sensor.
4. Connect ohmmeter to connector A 12 and blower outlet
sensor connector pin 2.
Display: < 5 Ohms
5. Connect ohmmeter to connector B 5 and blower outlet
sensor connector pin 1.
Display: < 5 Ohms
6. Connect voltmeter to connector B 5 and ground.
Switch on ignition.
Display: 0 volts
If approx. 5 volts are displayed, check wiring harness for pinching and chafing damage.
Short to ground
1. Unplug connector B from the heating/air-conditioning control.
2. Connect ohmmeter to connector B 5 and ground.
Display: Infinite Ohms
If 0 - 5 Ohms is displayed, check wiring harness for pinching and chafing damage.