Inspection Procedure

READ VALUE OF INTELLIGENT TESTER

(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch on (IG) and push the intelligent tester main switch on.

(c) Select the item below in the DATA LIST, and read the display on the intelligent tester.

DATA LIST / AIR CONDITIONER:

Item

Measure Item / Display (Range)

Normal Condition

Diagnostic Note

SOLAR SENS-P

Solar sensor (Passenger side) / min.: 0 max.: 255

Increases as brightness increases

-

Result

The display is as specified in the normal condition.

Result

Proceed to

NG

A

OK (Checking from the PROBLEM SYMPTOM TABLE)

B

OK (Checking from the DTC)

C

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE AIR CONDITIONING AMPLIFIER

INSPECT MULTIPLEX NETWORK BODY ECU

Multiplex Network Body ECU Connector Wire Harness View:

26

25

24

23

22

(a) Remove the multiplex network body ECU with

(b) Turn the ignition switch on (IG).

(c) Measure the voltage according to the value(s) in the table below.

Voltage

I036154E05

(a) Remove the multiplex network body ECU with

(b) Turn the ignition switch on (IG).

(c) Measure the voltage according to the value(s) in the table below.

Voltage

Tester connection (Symbols)

Condition

Specified condition

D7-6 (CLTB) - D7-4 (CLTE)

Ignition switch on (IG)

1G to 14 V

Go to step 4

Go to step 4

CHECK HARNESS AND CONNECTOR

Multiplex Network Body ECU Connector Wire Harness View:

17 16 15 14 13

26

25

24

23

17 16 15 14 13

I036154E06

(a) Disconnect the connector from the A/C solar sensor.

(b) Disconnect the connector from the multiplex network body ECU.

(c) Measure the resistance according to the value(s) in the table below.

Resistance

Tester connection (Symbols)

Condition

Specified condition

F1-6 (CLTB) - D7-6 (CLTB)

Always

Below 1 Q

F1-3 (CLTE) - D7-4 (CLTE)

Always

Below 1 Q

F1-6 (CLTB) - Body ground

Always

10 kQ or higher

F1-3 (CLTE) - Body ground

Always

10 kQ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MULTIPLEX NETWORK BODY ECU

CHECK HARNESS AND CONNECTOR

Toyota Prius Passenger Solar Sensor

(a) Disconnect the connector from A/C solar sensor.

(b) Disconnect the connector from the A/C amplifier.

(c) Measure the resistance according to the value(s) in the table below.

Resistance

Tester connection (Symbols)

Condition

Specified condition

D37-14 (TSP) - F1-2 (TSR)

Always

Below 1 Q

D37-14 (TSP) - Body ground

Always

10 kQ or higher

NGj>

REPAIR OR REPLACE HARNESS OR CONNECTOR

INSPECT A/C SOLAR SENSOR

A/C Solar Sensor Connector From Back Side:

CLTB-

i i.

1

4

3-

6

-CLTE

(a) Remove the A/C solar sensor.

(b) Apply Battery voltage between terminals F1-3 (CLTE) and F1-6 (CLTB) of the A/C solar sensor.

(c) Measure the voltage according to the value(s) in the table below.

Voltage

Tester connection (Symbols)

Condition

Specified condition

F1-2 (TSR) - F1-32 (CLTE)

Sensor is subject to electric light

4.0 to 4.6 V

F1-2 (TSR) - F1-32 (CLTE)

Sensor is covered with a cloth

• The connection procedure for using a digital tester such as a TOYOTA electrical tester is shown above. When using an analog tester, connect the positive (+) lead to terminal 2 and negative (-) lead to terminal 1 of the solar sensor.

• While using the battery during inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.

HINT:

• As the inspection light is moved away from the sensor the voltage increases.

• Use an incandescent lamp for inspection. Bring it within 30 cm (11.8 in.) of the solar sensor.

REPLACE A/C SOLAR SENSOR

B1422/22

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