Test Point 14

Test point 14
Sun sensor

Short to B+
Short to ground

Fault code 33

Diagnosis conditions
No control module fault stored.
No fault with supply voltage (5 volts).

Short to B+/ Short to ground
1. Remove sun sensor.
2. Remove plug connection from sun sensor.
3. Connect voltmeter on sleeve side to pin 2 (negative) and pin 3 (positive).
Switch on ignition.
Display: approx. 4.5 - 5 volts

If 0 volts is displayed, check wiring to the heating/air-conditioning control A 12 and B 18 for continuity.
Check wiring to the heating/air-conditioning control B 18 for short to ground.

NOTE:
- The wiring to the heating/air-conditioning unit is routed via two plug connections.
- If the wiring is OK, replace the heating/air-conditioning control.

4. Connect ohmmeter to sun sensor pins 2 and 3.
Sun sensor not in darkness
Display: approx. 1.3 MOhm

Sun sensor in darkness
Display: approx. 240 kOhms