DTC B14A3: Front Passenger Side Solar Sensor Short Circuit [10/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Air Conditioner / Data List.
5. Check the value(s) by referring to the table below.
   AIR CONDITIONER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Solar Sensor (P Side)	Front passenger side automatic light control sensor / Min.: 0 Max.: 255	Front passenger side automatic light control sensor value increases as brightness increases	-

   OK

   The display is as specified in the normal condition column.

   Result

   Result	Proceed to
   NG	A
   OK (When troubleshooting according to Problem Symptoms Table)	B
   OK (When troubleshooting according to the DTC)	C

Result: 

B 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [10/2014 - 10/2015] or PROBLEM SYMPTOMS TABLE [10/2015 - ] )

Result: 

C 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

A 

See step  2

1. Disconnect the D51 automatic light control sensor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D51-6 (CLTB) - D51-3 (CLTE)	Power switch off	Below 1 V
   D51-6 (CLTB) - D51-3 (CLTE)	Power switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Automatic Light Control Sensor)

Result: 

NG 

See step  5

Result: 

OK 

See step  3

1. Disconnect the D62 air conditioning amplifier assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D62-32 (TSP) - D51-2 (TSR)	Always	Below 1 Ω
   D62-32 (TSP) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Remove the automatic light control sensor (Refer to REMOVAL [10/2014 - ] ).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Reconnect the D51 automatic light control sensor connector.
3. Turn the power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D51-2 (TSR) - D51-3 (CLTE)	Sensor is subjected to electric light	0.8 to 4.3 V
   D51-2 (TSR) - D51-3 (CLTE)	Sensor is covered with a cloth	Below 0.8 V

   NOTE:

   • The connection procedure for using a digital tester such as a TOYOTA electrical tester is shown above. When using an analog tester, connect the negative (-) lead to terminal 2 and the positive (+) lead to terminal 3 of the automatic light control sensor.
   • Do not bring the positive and negative tester probes too close to each other as a short circuit may occur.

   HINT: 

   • Use an incandescent light for inspection. Bring it within about 30 cm (11.8 in.) of the automatic light control sensor.
   • As the inspection light is moved away from the sensor, the voltage decreases.
   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Automatic Light Control Sensor)

Result: 

OK 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

NG 

REPLACE AUTOMATIC LIGHT CONTROL SENSOR 

(Refer to REMOVAL [10/2014 - ] )

1. Disconnect the D6 main body ECU (multiplex network body ECU) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D6-20 (CLTB) - D51-6 (CLTB)	Always	Below 1 Ω
   D6-22 (CLTE) - D51-3 (CLTE)	Always	Below 1 Ω
   D6-20 (CLTB) - Body ground	Always	10 kΩ or higher
   D6-22 (CLTE) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

(Refer to REMOVAL [10/2014 - 10/2015] or REMOVAL [10/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR