DTC B1421 SOLAR SENSOR CIRCUIT (PASSENGER SIDE)

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Juliet Gallagher
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1 DT 1421 SOLR SENSOR IRUIT (PSSEER SIDE) IVR01 IRUIT DESRIPTION Resistance of photodiode High Low Weak Strong Strength of solar radiation The / solar sensor is installed in the upper part of the instrument panel to detect the amount of solar sensor radiation with photodiode to control the heater and air conditioner UTO function. It sends appropriate signals to the / amplifier. The output voltage of the / solar sensor changes in accordance with the amount of solar radiation. s the amount increases, the voltage increases. s the amount decreases, the voltage decreases. The / amplifier reads voltage output from the / solar sensor. DT No. Detection Item Trouble rea 1421 Open or short in solar sensor circuit. (If the check is performed in a dark place, DT 1424/24 may be displayed.) / solar sensor Harness or connector between / solar sensor and / amplifier or body EU / amplifier WIRI DIGRM / Solar Sensor enter onnector No GR LG IG1 5D 5J GR 2 1 / mplifier (/ ontrol ssembly) 12 8 IG1 3 5D 12 5J 21 I Prius Preliminary Release (RM1075U) 1461

2 INSPETION PROEDURE 1 RED VLUE ON HNDHELD TESTER onnect the handheld tester to DL3. Turn the power switch ON and push the handheld tester main switch ON. (c) Select the item below in the DT LIST, and read the display on the handheld tester. DT LIST / IR ONDITIONER: Item SOLR SENSD Measurement Item/Display (Range) Solar sensor (Driver side) / min.: 0 max.: 255 : The display is as specified in the normal condition. Result: (hecking from the PROLEM SYMPTOM TLE) (hecking from the DT) Normal ondition Increases as brightness increases Diagnostic Note Open in the circuit: 0 Short in the circuit: 255 PROEED TO NEXT IRUIT INSPETION SHOWN IN PROLEM SYMPTOMS TLE (SEE PGE ) REPLE IR ONDITIONI MPLIFIER (SEE PGE 5547) 2004 Prius Preliminary Release (RM1075U) 1462

3 INSPET IR ONDITIONI MPLIFIER( ) ir onditioning mplifier onnector Wire Harness View: E73002 I41186 Remove the air / amplifier with connectors still connected. Tester connection ondition Specified condition 12 () 21 () 12 () 21 () Power switch ON (ON) Sensor is subject to electric light Power switch ON (ON) Sensor is covered with a cloth 0.8 to 4.3 V elow 0.8 V HINT: s the inspection light is moved away from the sensor, the voltage increases. Use an incandescent lamp for inspection. ring it within 30 cm (11.8 in.) of the / solar sensor (cooler (solar sensor) thermistor). Result: (hecking from the PROLEM SYMPTOMS TLE) (hecking from the DT) PROEED TO NEXT IRUIT INSPETION SHOWN IN PROLEM SYMPTOMS TLE (SEE PGE ) REPLE IR ONDITIONI MPLIFIER (SEE PGE 5547) 2004 Prius Preliminary Release (RM1075U) 1463

4 INSPET / SOLR SENSOR / Solar Sensor onnector Front View: 2 1 (c) (d) Remove the / solar sensor. Disconnect the connector from the / solar sensor. onnect the positive (+) lead from the ohmmeter to terminal 2 and negative () lead to terminal of the / solar sensor. E50667 E72857 Tester connection ondition Specified condition 1 2 Sensor is subject to electric light Except Ω 1 2 Sensor is covered with a cloth Ω (No continuity) NOTIE: The connection procedure for using a digital tester such as an TOYOT electrical tester is shown above. When using an analog tester, connect the positive (+) lead to terminal 1 and negative () lead to terminal 2 of the / solar sensor. HINT: s the inspection light is moved away from the sensor, the voltage increases. Use an incandescent lamp for inspection. ring it within 30 cm (11.8 in.) of the / solar sensor. REPLE / SOLR SENSOR 2004 Prius Preliminary Release (RM1075U) 1464

5 HEK HRNESS ND ONNETOR(/ SOLR SENSOR IR ONDITONI MPLIFIER) (SEE PGE 0147) / Solar Sensor onnector Front View: ir onditioning mplifier onnector Wire Harness View: Disconnect the connector from the / solar sensor. Tester connection ondition Specified condition 12 () 1 lways elow 1 Ω 21 () 2 lways elow 1 Ω 12 () ody ground 21 () ody ground lways lways 10 kω or higher 10 kω or higher I36368 REPIR OR REPLE HRNESS OR ONNETOR REPLE IR ONDITIONI MPLIFIER (SEE PGE 5547) 2004 Prius Preliminary Release (RM1075U) 1465

Introduction...2. Solar Radiation...3 Solar Sensor...3. Components...4. System Operation...6

Introduction...2. Solar Radiation...3 Solar Sensor...3. Components...4. System Operation...6 Table of Contents Subject Page Introduction.................................................2 Solar Radiation...............................................3 Solar Sensor..............................................3