Test Point 14

TEST POINT 14
Sun Sensor Short To B+, Short To Ground

DTC 33

Diagnosis Conditions
- No control module fault stored.
- No fault on the supply voltage (5 Volts).

Short to B+ / Short to Ground

1. Remove sun sensor.

2. Disconnect plug connection on the sun sensor.

3. Connect voltmeter to sleeve side of pin 2 (minus) and pin 3 (plus).

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 wires are routed via two plug connections on the heater/ A/C unit. Replace the heating/air conditioning control if the wires are OK.

4. Connect ohmmeter to sun sensor pins 2 and 3.

- Sun sensor not in darkness

Display: approx. 1.3 megohms

- Sun sensor in darkness

Display: approx. 240 kohms