INSPECTION PROCEDURE
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
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- READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Allow exhaust gas (HC, CO) to travel to the sensing portion of the smog ventilation sensor. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Emission Gas Sensor Emission gas (HC, CO) / Min.: 0 Max.: 255 Smog ventilation sensor value increases as gas amount 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 C --> See step 8 B --> See step 7 A: Go to next step
- CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - BODY GROUND) Disconnect the smog ventilation sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-6 (E) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Smog Ventilation Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - BATTERY) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition B2-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V B2-3 (IG) - Body ground Engine switch off Below 1 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Smog Ventilation Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT SMOG VENTILATION SENSOR Remove the smog ventilation sensor. Connect a battery positive (+) lead to terminal 3 (IG) and a negative (-) lead to terminal 6 (E). Allow exhaust gas (HC, CO) to travel to the sensing portion of the smog ventilation sensor, and measure the resistance between terminals 1 (SG) and 2 (DGS). OK When the sensor is exposed to the exhaust gas, the resistance increases. HINT: The resistance before blowing exhaust gas is 10 kohms to 40 kohms. TEXT IN ILLUSTRATION *1 Component without harness connected (Smog Ventilation Sensor) NG --> See step 9 OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - A/C AMPLIFIER) Disconnect the A/C amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-1 (SG) - F50-13 (SG-2) Always Below 1 ohms B2-2 (DGS) - F50-6 (DGS) Always Below 1 ohms F50-13 (SG-2) - Body ground Always 10 kohms or higher F50-6 (DGS) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) *2 Front view of wire harness connector (to Smog Ventilation Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
- REPLACE A/C AMPLIFIER. Refer to «REMOVAL»(ref-400783-S15121641442011051800000)
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400793-S26530521342011051800000)
- REPLACE A/C AMPLIFIER. Refer to «REMOVAL»(ref-400783-S15121641442011051800000)
- REPLACE SMOG VENTILATION SENSOR. Refer to «REMOVAL»(ref-400783-S39049165952011051800000)
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
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- READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Allow exhaust gas (NOx) to travel to the sensing portion of the smog ventilation sensor. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Emission Gas Nox Sensor Emission gas (Nox) / Min.: 0 Max.: 255 Smog ventilation sensor value increases as gas amount 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 C --> See step 8 B --> See step 7 A: Go to next step
- CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - BODY GROUND) Disconnect the smog ventilation sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-6 (E) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Smog Ventilation Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - BATTERY) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition B2-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V B2-3 (IG) - Body ground Engine switch off Below 1 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Smog Ventilation Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT SMOG VENTILATION SENSOR Remove the smog ventilation sensor. Connect a battery positive (+) lead to terminal 3 (IG) and a negative (-) lead to terminal 6 (E). Allow exhaust gas (NOx) to travel to the sensing portion of the smog ventilation sensor, and measure the resistance between terminals 1 (SG) and 4 (DGS1). OK When the sensor is exposed to the exhaust gas, the resistance increases. HINT: The resistance before blowing exhaust gas is 10 kohms to 40 kohms. TEXT IN ILLUSTRATION *1 Component without harness connected (Smog Ventilation Sensor) NG --> See step 9 OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SMOG VENTILATION SENSOR - A/C AMPLIFIER) Disconnect the A/C amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-1 (SG) - F50-13 (SG-2) Always Below 1 ohms B2-4 (DGS1) - F51-3 (DGS1) Always Below 1 ohms F50-13 (SG-2) - Body ground Always 10 kohms or higher F51-3 (DGS1) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) *2 Front view of wire harness connector (to Smog Ventilation Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
- REPLACE A/C AMPLIFIER. Refer to «REMOVAL»(ref-400783-S15121641442011051800000)
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400793-S26530521342011051800000)
- REPLACE A/C AMPLIFIER. Refer to «REMOVAL»(ref-400783-S15121641442011051800000)
- REPLACE SMOG VENTILATION SENSOR. Refer to «REMOVAL»(ref-400783-S39049165952011051800000)
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT
If DTC B1244 is output together with other DTCs, troubleshoot DTC B1244 first. Refer to DTC B1244: Light Sensor Circuit Malfunction .
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- READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Solar Sensor (D side) Driver side solar sensor / Min.: 0 Max.: 255 Driver side solar 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 C --> See step 7 B --> See step 6 A: Go to next step
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Disconnect the solar sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H3-6 (CLTB) - H3-3 (CLTE) Engine switch off Below 1 V H3-6 (CLTB) - H3-3 (CLTE) Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Solar Sensor) NG --> See step 5 OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SOLAR SENSOR - A/C AMPLIFIER) Disconnect the solar sensor connector. Disconnect the A/C amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F50-33 (TSD) - H3-1 (TSL) Always Below 1 ohms F50-33 (TSD) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Solar Sensor) *2 Front view of wire harness connector (to A/C Amplifier) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT SOLAR SENSOR Remove the solar sensor. Reconnect the solar sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H3-1 (TSL) - H3-3 (CLTE) Sensor is exposed to electric light 0.8 to 4.3 V H3-1 (TSL) - H3-3 (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 6 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: Use an incandescent light for inspection. Bring it within about 30 cm (11.8 in.) of the solar sensor. As the inspection light is moved away from the sensor, the voltage decreases. TEXT IN ILLUSTRATION *1 Component with harness connected (Solar Sensor) NG --> See step 8 OK --> See step 7
- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SOLAR SENSOR) Disconnect the main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F13-20 (CLTB) - H3-6 (CLTB) Always Blow 1 ohms F13-22 (CLTE) - H3-3 (CLTE) Always Blow 1 ohms F13-20 (CLTB) - Body ground Always 10 kohms or higher F13-22 (CLTE) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Main Body ECU) *2 Front view of wire harness connector (to Solar Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400793-S26530521342011051800000)
- REPLACE A/C AMPLIFIER. Refer to «REMOVAL»(ref-400783-S15121641442011051800000)
- REPLACE SOLAR SENSOR. Refer to «REMOVAL»(ref-400783-S27834484902011051800000)
- REPLACE MAIN BODY ECU. Refer to «REMOVAL»(ref-400866-S02233239402011051800000)
HINT
If DTC B1244 is output together with other DTCs, troubleshoot DTC B1244 first. Refer to DTC B1244: Light Sensor Circuit Malfunction .
HINT
If DTC B1244 is output together with other DTCs, troubleshoot DTC B1244 first. Refer to DTC B1244: Light Sensor Circuit Malfunction .
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- READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Data List. 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) Passenger side solar sensor / Min.: 0 Max.: 255 Passenger side solar 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 C --> See step 7 B --> See step 6 A: Go to next step
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Disconnect the solar sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H3-6 (CLTB) - H3-3 (CLTE) Engine switch off Below 1 V H3-6 (CLTB) - H3-3 (CLTE) Engine switch on (IG) 11 to 14 V *1 Front view of wire harness connector (to Solar Sensor) NG --> See step 5 OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SOLAR SENSOR - A/C AMPLIFIER) Disconnect the solar sensor connector. Disconnect the A/C amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F50-32 (TSP) - H3-2 (TSR) Always Below 1 ohms F50-32 (TSP) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Solar Sensor) *2 Front view of wire harness connector (to A/C Amplifier) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT SOLAR SENSOR Remove the solar sensor. Reconnect the solar sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H3-2 (TSR) - H3-3 (CLTE) Sensor is exposed to electric light 0.8 to 4.3 V H3-2 (TSR) - H3-3 (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 1 and the positive (+) lead to terminal 6 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: Use an incandescent light for inspection. Bring it within about 30 cm (11.8 in.) of the solar sensor. As the inspection light is moved away from the sensor, the voltage decreases. TEXT IN ILLUSTRATION *1 Component with harness connected (Solar Sensor) NG --> See step 8 OK --> See step 7
- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SOLAR SENSOR) Disconnect the main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F13-20 (CLTB) - H3-6 (CLTB) Always Below 1 ohms F13-22 (CLTE) - H3-3 (CLTE) Always Below 1 ohms F13-20 (CLTB) - Body ground Always 10 kohms or higher F13-22 (CLTE) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Main Body ECU) *2 Front view of wire harness connector (to Solar Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400793-S26530521342011051800000)
- REPLACE A/C AMPLIFIER. Refer to «REMOVAL»(ref-400783-S15121641442011051800000)
- REPLACE SOLAR SENSOR. Refer to «REMOVAL»(ref-400783-S27834484902011051800000)
- REPLACE MAIN BODY ECU. Refer to «REMOVAL»(ref-400866-S02233239402011051800000)
HINT
If DTC B1244 is output together with other DTCs, troubleshoot DTC B1244 first. Refer to DTC B1244: Light Sensor Circuit Malfunction .
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
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- CONFIRM MODEL Result Result Proceed to w/ Navigation System A w/o Navigation System B B --> See step 5 A: Go to next step
- CHECK CAN COMMUNICATION SYSTEM Use the Techstream to check if the CAN communication system is functioning normally. Result Result Proceed to CAN DTC is not output A CAN DTC is output B B --> See step 8 A: Go to next step
- CHECK AVC-LAN CIRCUIT Check for an open or short in all AVC-LAN circuits. Refer to «AVC-LAN Circuit»(ref-400885-S25963593742011051800000) for DVD. Refer to «AVC-LAN Circuit»(ref-400884-S16148957642011051800000) for HDD). OK There is no open or short circuit. NG --> REPAIR AVC-LAN CIRCUIT OK: Go to next step
- CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND) Disconnect the radio receiver assembly (A/C control panel) connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition G8-8 (+B) - Body ground Always 11 to 14 V G8-15 (IG+) - Body ground Engine switch off Below 1 V G8-15 (IG+) - Body ground Engine switch on (IG) 11 to 14 V G8-16 (ACC) - Body ground Engine switch off Below 1 V G8-16 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AC-9 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly (A/C Control Panel)) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
- CHECK AVC-LAN CIRCUIT Check for an open or short in all AVC-LAN circuits. Refer to «AVC-LAN Circuit»(ref-400890-S06168196392011051800000) . OK There is no open or short circuit. NG --> REPAIR AVC-LAN CIRCUIT OK: Go to next step
- CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - ACCESSORY METER ASSEMBLY) Disconnect the A/C amplifier connector. Disconnect the accessory meter assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F50-37 (LIN1) - G1-20 (LIN1) Always Below 1 ohms F50-37 (LIN1) - Body ground Always 10 k ohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) *2 Front view of wire harness connector (to Accessory Meter Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND) Disconnect the radio receiver assembly (A/C control panel) connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition G8-8 (+B) - Body ground Always Always 11 to 14 V G8-16 (ACC) - Body ground Engine switch off Below 1 V G8-16 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition G8-9 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly (A/C Control Panel)) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
- GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-400834-S14071915672011051800000)
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400793-S26530521342011051800000)
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
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- PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Blower Motor Blower motor Min.: 0, Max.: 31 - OK Blower motor operates and blower motor speed level changes. Result Result Proceed to OK A NG (Blower motor does not operate) B NG (Blower motor operates but does not change speed) C C --> See step 7 B --> See step 3 A --> See step 2
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400793-S26530521342011051800000)
- CHECK HARNESS AND CONNECTOR (BLOWER MOTOR - BODY GROUND) Disconnect the blower motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F47-1 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Blower Motor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (BLOWER MOTOR - BATTERY) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F47-3 (+B) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Blower Motor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (BLOWER MOTOR - A/C AMPLIFIER) Disconnect the A/C amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F50-23 (BLW) - F47-2 (SI) Always Below 1 ohms F50-23 (BLW) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) *2 Front view of wire harness connector (to Blower Motor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT BLOWER MOTOR Reconnect the blower motor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F50-23 (BLW) - Body ground Always 4.5 to 5.5 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) NG --> See step 8 OK: Go to next step
- INSPECT A/C AMPLIFIER Remove the A/C amplifier. Reconnect the A/C amplifier connector. Turn the engine switch on (IG). Set the blower speed to LO. Measure the waveform between terminal F50-23 (BLW) of the A/C amplifier and body ground. Item Content Tool setting 1 V/DIV., 500 μs/DIV. Vehicle condition Engine switch on (IG) Blower set to LO OK Waveform is as shown in the illustration. HINT: The waveform varies with the blower speed. TEXT IN ILLUSTRATION *1 Component with harness connected (A/C Amplifier) NG --> See step 9 OK --> See step 8
- REPLACE BLOWER MOTOR. Refer to «DISASSEMBLY»(ref-400783-S12145769142011051800000)
- REPLACE A/C AMPLIFIER. Refer to «REMOVAL»(ref-400783-S15121641442011051800000)
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
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- CHECK CAN COMMUNICATION SYSTEM Use the Techstream to check if the CAN communication system is functioning normally. Result Result Proceed to CAN DTC is not output A CAN DTC is output B B --> See step 12 A: Go to next step
- INSPECT RELAY (MG/CLT) Remove the MG/CLT relay from the engine room relay block and junction block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage is applied to terminals 1 and 2) NG --> REPLACE RELAY (MG/CLT) OK: Go to next step
- CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK - BATTERY) Remove the MG/CLT relay from the engine room relay block and junction block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition Relay block MG/CLT relay terminal 1 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Component without relay installed (Engine Room Relay Block and Junction Block) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY) Disconnect the A/C amplifier connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F50-20 (MGC) - Body ground Engine switch off Below 1 V F50-20 (MGC) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT A/C AMPLIFIER Reconnect the A/C amplifier connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F50-20 (MGC) - Body ground Engine switch on (IG) A/C switch: off 11 to 14 V F50-20 (MGC) - Body ground Engine switch on (IG) A/C switch: on Below 1 V TEXT IN ILLUSTRATION *1 Component with harness connected (A/C Amplifier) NG --> See step 14 OK: Go to next step
- INSPECT A/C COMPRESSOR Disconnect the A/C compressor connector. Disconnect the magnetic clutch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D7-3 (MG+) - d17-1 Always Below 1 ohms D7-3 (MG+) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (A/C Compressor) *2 Component without harness connected (Magnetic Clutch) NG --> See step 11 OK: Go to next step
- INSPECT MAGNETIC CLUTCH Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition d17-1 - Body ground 20°C (68°F) 3.8 to 4.2 ohms When connector terminal d17-1 is connected to a positive (+) battery terminal, check that the following occurs: 1) the magnetic clutch operating sound can be heard, and 2) the magnetic clutch hub and rotor lock. TEXT IN ILLUSTRATION *1 Component without harness connected (Magnetic Clutch) NG --> See step 13 OK: Go to next step
- CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK - BATTERY) Remove the MG/CLT relay from the engine room relay block and junction block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition Relay block MG/CLT relay terminal 5 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Component without relay installed (Engine Room Relay Block and Junction Block NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK - A/C COMPRESSOR) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Relay block MG/CLT relay terminal 3 - D7-3 (MG+) Always Below 1 ohms D7-3 (MG+) - Body ground Always 10 kohms or higher Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C TEXT IN ILLUSTRATION *1 Component without relay installed (Engine Room Relay Block and Junction Block) *2 Front view of wire harness connector (to A/C Compressor) C --> See step 14 B --> See step 10 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400793-S26530521342011051800000)
- REPLACE A/C COMPRESSOR. Refer to «REMOVAL»(ref-400783-S29353979272011051800000)
- GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-400834-S14071915672011051800000)
- REPLACE MAGNETIC CLUTCH. Refer to «DISASSEMBLY»(ref-400783-S27699449452011051800000)
- REPLACE A/C AMPLIFIER. Refer to «REMOVAL»(ref-400783-S15121641442011051800000)
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT
Start the engine before inspection. Check the IG1 relay or battery if the engine does not start.
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Scheme 326
- INSPECT A/C AMPLIFIER Remove the A/C amplifier with its connectors still connected. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F50-1 (IG+) - F50-14 (GND) Engine switch off Below 1 V F50-1 (IG+) - F50-14 (GND) Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Component with harness connected (A/C Amplifier) NG --> See step 3 OK --> See step 2
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400793-S26530521342011051800000)
- CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY) Disconnect the A/C amplifier connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F50-1 (IG+) - Body ground Engine switch off Below 1 V F50-1 (IG+) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F50-14 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
- REPLACE A/C AMPLIFIER. Refer to «REMOVAL»(ref-400783-S15121641442011051800000)
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT
Start the engine before inspection. Check the IG1 relay or battery if the engine does not start.
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Scheme 327
Scheme 328
- CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY) Disconnect the A/C amplifier connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F50-21 (B) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BODY GROUND) Disconnect the A/C amplifier connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F50-14 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to A/C Amplifier) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400793-S26530521342011051800000)
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.