Audio / Visual (W/navigation) (Diagnostic Codes & Symptom Tests): Overview Lexus ES XV40 facelift

DESCRIPTION

This DTC is stored when a malfunction occurs in a connected device.

These DTCs are stored when a malfunction occurs in the radio receiver assembly.

This DTC is stored when a malfunction occurs in the stereo component amplifier assembly.

This DTC is stored when a malfunction occurs in the radio receiver assembly.

This DTC is stored when a malfunction occurs in the multi-media interface ECU.

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This DTC is stored when a malfunction occurs in the speakers.

1. *1: w/ Manual (SOS) Switch

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1. INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY Disconnect stereo component amplifier assembly connectors M35 and M32. Clear the DTCs and recheck for DTCs. Check if DTC B15C3 is output. OK DTC B15C3 is not output. NG --> See step 16 OK: Go to next step
2. CHECK OPERATION Reconnect stereo component amplifier assembly connector M32. Check if DTC B15C3 is output. OK DTC B15C3 is not output. NG --> See step 9 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR Disconnect stereo component amplifier assembly connector M35, DCM (telematics transceiver) connector E97 (w/ Manual (SOS) Switch) and speaker connectors H8, E87, I7, E86, J5 and K5. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-10 (FR+) - Body ground Always 10 kohms or higher M35-9 (FR-) - Body ground Always 10 kohms or higher M35-3 (FL+) - Body ground Always 10 kohms or higher M35-8 (FL-) - Body ground Always 10 kohms or higher M35-5 (RR+) - Body ground Always 10 kohms or higher M35-12 (RR-) - Body ground Always 10 kohms or higher M35-4 (RL+) - Body ground Always 10 kohms or higher M35-11 (RL-) - Body ground Always 10 kohms or higher Measure the resistance between each of the front No. 1 speakers and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition H8-1 - Body ground Always 10 kohms or higher H8-2 - Body ground Always 10 kohms or higher I7-1 - Body ground Always 10 kohms or higher I7-2 - Body ground Always 10 kohms or higher w/ Manual (SOS) Switch: Measure the resistance between the front No. 2 speaker RH and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E87-1 (TWR+) - Body ground Always 10 kohms or higher E87-2 (TWR-) - Body ground Always 10 kohms or higher Measure the resistance between the front No. 2 speaker LH and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-3 (FL+) - E86-1 (TWL+) Always Below 1 ohms M35-8 (FL-) - E86-2 (TWL-) Always Below 1 ohms w/o Manual (SOS) Switch: Measure the resistance between the front No. 2 speaker RH and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-10 (FR+) - E87-1 (TWR+) Always Below 1 ohms M35-9 (FR-) - E87-2 (TWR-) Always Below 1 ohms w/ Manual (SOS) Switch: Measure the resistance between the stereo component amplifier assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-10 (FR+) - E97-2 (SPI+) Always Below 1 ohms M35-9 (FR-) - E97-3 (SPI-) Always Below 1 ohms w/ Manual (SOS) Switch: Measure the resistance between the front No. 2 speaker RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E97-5 (SPO+) - E87-1 (TWR+) Always Below 1 ohms E97-6 (SPO-) - E87-2 (TWR-) Always Below 1 ohms Measure the resistance between each of the rear speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-5 (RR+) - J5-1 Always Below 1 ohms M35-12 (RR-) - J5-2 Always Below 1 ohms M35-4 (RL+) - K5-1 Always Below 1 ohms M35-11 (RL-) - K5-2 Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT FRONT NO. 1 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H8-1 - H8-2 Always 3.2 to 4.8 ohms I7-1 - I7-2 Always 3.2 to 4.8 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 1 Speaker) NG --> See step 12 OK: Go to next step
5. INSPECT FRONT NO. 2 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E87-1 (TWR+) - E87-2 (TWR-) Always 10 kohms or higher E86-1 (TWL+) - E86-2 (TWL-) Always 10 kohms or higher TEXT IN ILLUSTRATION *A for RH *B for LH *1 Component without harness connected (Front No. 2 Speaker) NG --> See step 17 OK: Go to next step
6. INSPECT REAR SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition J5-1 - J5-2 Always 3.2 to 4.8 ohms K5-1 - K5-2 Always 3.2 to 4.8 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Speaker) Proceed to the next step based on the inspection result. Result Condition Proceed to OK (w/ Manual (SOS) Switch) A OK (w/o Manual (SOS) Switch) B NG C C --> See step 13 B --> See step 16 A: Go to next step
7. INSPECT DCM (TELEMATICS TRANSCEIVER) Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E97-2 (SPI+) - E97-5 (SPO+) Always Below 1 ohms E97-3 (SPI-) - E97-6 (SPO-) Always Below 1 ohms E97-2 (SPI+) - E97-3 (SPI-) Always 10 kohms or higher E97-5 (SPO+) - E97-6 (SPO-) Always 10 kohms or higher E97-3 (SPI-) - Body ground Always 10 kohms or higher E97-6 (SPO-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (DCM (Telematics Transceiver)) NG --> See step 8 OK --> See step 16
8. REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to «REMOVAL»(ref-396740-S39942374592011050900000)
9. CHECK HARNESS AND CONNECTOR Disconnect stereo component amplifier assembly connector M32 and speaker connectors M28 and G2. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-8 (CTR+) - Body ground Always 10 kohms or higher M32-7 (CTR-) - Body ground Always 10 kohms or higher M32-1 (WF1+) - Body ground Always 10 kohms or higher M32-5 (WF1-) - Body ground Always 10 kohms or higher M32-2 (WF2+) - Body ground Always 10 kohms or higher M32-6 (WF2-) - Body ground Always 10 kohms or higher Measure the resistance between the front stereo component speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-8 (CTR+) - G2-1 Always Below 1 ohms M32-7 (CTR-) - G2-2 Always Below 1 ohms Measure the resistance between the stereo component speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-1 (WF1+) - M28-4 (WF1+) Always Below 1 ohms M32-5 (WF1-) - M28-3 (WF1-) Always Below 1 ohms M32-2 (WF2+) - M28-2 (WF2+) Always Below 1 ohms M32-6 (WF2-) - M28-1 (WF2-) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
10. INSPECT FRONT STEREO COMPONENT SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition G2-1 - G2-2 Always 8 to 12 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front Stereo Component Speaker) NG --> See step 14 OK: Go to next step
11. INSPECT STEREO COMPONENT SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M28-4 (WF1+) - M28-3 (WF1-) Always 2 to 3 ohms M28-2 (WF2+) - M28-1 (WF2-) Always 2 to 3 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Stereo Component Speaker) NG --> See step 15 OK --> See step 16
12. REPLACE FRONT NO. 1 SPEAKER. Refer to «REMOVAL»(ref-396678-S19670409452011050900000)
13. REPLACE REAR SPEAKER. Refer to «REMOVAL»(ref-396678-S36636587502011050900000)
14. REPLACE FRONT STEREO COMPONENT SPEAKER. Refer to «REMOVAL»(ref-396678-S16200948222011050900000)
15. REPLACE STEREO COMPONENT SPEAKER. Refer to «REMOVAL»(ref-396678-S42189017472011050900000)
16. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-396678-S22179403352011050900000)
17. REPLACE FRONT NO. 2 SPEAKER. Refer to «REMOVAL»(ref-396678-S19670409452011050900000)

This DTC is stored when a malfunction occurs in communication with a USB device or "iPod".

This DTC is stored when the disc in the radio receiver assembly cannot be read.

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1. CHECK DISC Check that the disc is not deformed or cracked. OK No deformation or cracks on the disc NG --> CHANGE DISC OK: Go to next step
2. DISC CLEANING Disc cleaning If dirt is on the disc surface, wipe it clean with a soft cloth from the inside to the outside in a radial direction. NOTE: Do not use a conventional record cleaner or anti-static preservative. NEXT: Go to next step
3. REPLACE DISC WITH ANOTHER AND RECHECK Replace the disc with another and recheck. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-396736-S11221912012011050900000) . Recheck for DTCs and check if the same DTC is output again. OK No DTC is output. NG --> See step 4 OK --> END
4. REPLACE RADIO RECEIVER ASSEMBLY. Refer to «REMOVAL»(ref-396678-S10849609972011050900000)

These DTCs are stored when a malfunction occurs in the satellite radio antenna which is connected to the radio receiver assembly.

Power is supplied to the radio receiver assembly illumination when the light control switch is in the tail or head position.

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1. CHECK ILLUMINATION Check if the illumination for the radio receiver assembly, heater control switch or others (hazard switch, etc.) comes on when the light control switch is turned to the head or tail position. Result Result Proceed to Illumination comes on for all components except radio receiver assembly. A No illumination comes on (radio receiver assembly, hazard switch, heater control switch, etc.). B B --> See step 5 A: Go to next step
2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-396736-S19392826392011050900000)
3. CHECK HARNESS AND CONNECTOR (BATTERY - RADIO RECEIVER ASSEMBLY) Disconnect the radio receiver assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E109-3 (ILL+) - Body ground Light control switch tail or head 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY) Disconnect the radio receiver assembly connector and combination meter assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E109-17 (ILL-) - E19-11 (ILL-) Always Below 1 ohms E19-11 (ILL-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
5. GO TO LIGHTING SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-396674-S25799567122011050900000)

If there is a short in a speaker circuit, the stereo component amplifier assembly detects the short and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, DCM (telematics transceiver)*1 or speakers.

1. *1: w/ Manual (SOS) Switch

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1. w/o Rear Header Speaker
2. w/ Rear Header Speaker

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1. CONFIRM MODEL Choose the model to be inspected. Result Model Proceed to w/o Rear Header Speaker A w/ Rear Header Speaker B B --> See step 3 A: Go to next step
2. CHECK HARNESS AND CONNECTOR Disconnect the connectors from the stereo component amplifier assembly, DCM (telematics transceiver) (w/ Manual (SOS) Switch) and speakers. Measure the resistance between the front No. 2 speaker LH and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-3 (FL+) - E86-1 (TWL+) Always Below 1 ohms M35-8 (FL-) - E86-2 (TWL-) Always Below 1 ohms w/o Manual (SOS) Switch: Measure the resistance between the front No. 2 speaker RH and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-10 (FR+) - E87-1 (TWR+) Always Below 1 ohms M35-9 (FR-) - E87-2 (TWR-) Always Below 1 ohms w/ Manual (SOS) Switch: Measure the resistance between the stereo component amplifier assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-10 (FR+) - E97-2 (SPI+) Always Below 1 ohms M35-9 (FR-) - E97-3 (SPI-) Always Below 1 ohms w/ Manual (SOS) Switch: Measure the resistance between the front No. 2 speaker RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E97-5 (SPO+) - E87-1 (TWR+) Always Below 1 ohms E97-6 (SPO-) - E87-2 (TWR-) Always Below 1 ohms Measure the resistance between each of the front No. 1 speakers and the front No. 2 speakers to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E87-3 (+) - H8-1 Always Below 1 ohms E87-4 (-) - H8-2 Always Below 1 ohms E86-3 (+) - I7-1 Always Below 1 ohms E86-4 (-) - I7-2 Always Below 1 ohms Measure the resistance between each of the rear speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-5 (RR+) - J5-1 Always Below 1 ohms M35-12 (RR-) - J5-2 Always Below 1 ohms M35-4 (RL+) - K5-1 Always Below 1 ohms M35-11 (RL-) - K5-2 Always Below 1 ohms Measure the resistance between the front stereo component speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-8 (CTR+) - G2-1 Always Below 1 ohms M32-7 (CTR-) - G2-2 Always Below 1 ohms Measure the resistance between the stereo component speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-1 (WF1+) - M28-4 (WF1+) Always Below 1 ohms M32-5 (WF1-) - M28-3 (WF1-) Always Below 1 ohms M32-2 (WF2+) - M28-2 (WF2+) Always Below 1 ohms M32-6 (WF2-) - M28-1 (WF2-) Always Below 1 ohms Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-10 (FR+) - Body ground Always 10 kohms or higher M35-9 (FR-) - Body ground Always 10 kohms or higher M35-3 (FL+) - Body ground Always 10 kohms or higher M35-8 (FL-) - Body ground Always 10 kohms or higher M35-5 (RR+) - Body ground Always 10 kohms or higher M35-12 (RR-) - Body ground Always 10 kohms or higher M35-4 (RL+) - Body ground Always 10 kohms or higher M35-11 (RL-) - Body ground Always 10 kohms or higher M32-8 (CTR+) - Body ground Always 10 kohms or higher M32-7 (CTR-) - Body ground Always 10 kohms or higher M32-1 (WF1+) - Body ground Always 10 kohms or higher M32-5 (WF1-) - Body ground Always 10 kohms or higher M32-2 (WF2+) - Body ground Always 10 kohms or higher M32-6 (WF2-) - Body ground Always 10 kohms or higher w/ Manual (SOS) Switch: Measure the resistance between the front No. 2 speaker RH and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M87-1 (TWR+) - Body ground Always 10 kohms or higher M87-2 (TWR-) - Body ground Always 10 kohms or higher Measure the resistance between each of the front No. 1 speakers and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition H8-1 - Body ground Always 10 kohms or higher H8-2 - Body ground Always 10 kohms or higher I7-1 - Body ground Always 10 kohms or higher I7-2 - Body ground Always 10 kohms or higher Proceed to the next step based on the inspection result. Result Condition Proceed to NG A OK B B --> See step 4 A --> REPAIR OR REPLACE HARNESS OR CONNECTOR
3. CHECK HARNESS AND CONNECTOR Disconnect the connectors from the stereo component amplifier assembly, DCM (telematics transceiver) (w/ Manual (SOS) Switch) and speakers. Measure the resistance between the front No. 2 speaker LH and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-3 (FL+) - E94-1 (TWL+) Always Below 1 ohms M32-9 (FL-) - E94-2 (TWL-) Always Below 1 ohms w/o Manual (SOS) Switch: Measure the resistance between the front No. 2 speaker RH and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-4 (FR+) - E95-1 (TWR+) Always Below 1 ohms M32-10 (FR-) - E95-2 (TWR-) Always Below 1 ohms w/ Manual (SOS) Switch: Measure the resistance between the stereo component amplifier assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-4 (FR+) - E97-2 (SPI+) Always Below 1 ohms M32-10 (FR-) - E97-3 (SPI-) Always Below 1 ohms w/ Manual (SOS) Switch: Measure the resistance between the front No. 2 speaker RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E97-5 (SPO+) - E95-1 (TWR+) Always Below 1 ohms E97-6 (SPO-) - E95-2 (TWR-) Always Below 1 ohms Measure the resistance between each of the front No. 1 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-10 (WFR+) - H8-1 Always Below 1 ohms M35-9 (WFR-) - H8-2 Always Below 1 ohms M35-3 (WFL+) - I7-1 Always Below 1 ohms M35-8 (WFL-) - I7-2 Always Below 1 ohms Measure the resistance between each of the rear No. 2 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-5 (RR+) - J6-1 (+TW) Always Below 1 ohms M35-12 (RR-) - J6-2 (-TW) Always Below 1 ohms M35-4 (RL+) - K6-1 (+TW) Always Below 1 ohms M35-11 (RL-) - K6-2 (-TW) Always Below 1 ohms Measure the resistance between each of the rear speakers and the rear No. 2 speakers to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition J6-3 (+) - J5-1 Always Below 1 ohms J6-4 (-) - J5-2 Always Below 1 ohms K6-3 (+) - K5-1 Always Below 1 ohms K6-4 (-) - K5-2 Always Below 1 ohms Measure the resistance between each of the rear header speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-2 (SR+) - M27-1 Always Below 1 ohms M35-7 (SR-) - M27-2 Always Below 1 ohms M35-1 (SL+) - M26-1 Always Below 1 ohms M35-6 (SL-) - M26-2 Always Below 1 ohms Measure the resistance between the front stereo component speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-8 (CTR+) - G2-1 Always Below 1 ohms M32-7 (CTR-) - G2-2 Always Below 1 ohms Measure the resistance between the stereo component speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M32-1 (WF1+) - M28-4 (WF1+) Always Below 1 ohms M32-5 (WF1-) - M28-2 (WF1-) Always Below 1 ohms Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition M35-10 (WFR+) - Body ground Always 10 kohms or higher M35-9 (WFR-) - Body ground Always 10 kohms or higher M35-3 (WFL+) - Body ground Always 10 kohms or higher M35-8 (WFL-) - Body ground Always 10 kohms or higher M35-5 (RR+) - Body ground Always 10 kohms or higher M35-12 (RR-) - Body ground Always 10 kohms or higher M35-4 (RL+) - Body ground Always 10 kohms or higher M35-11 (RL-) - Body ground Always 10 kohms or higher M35-2 (SR+) - Body ground Always 10 kohms or higher M35-7 (SR-) - Body ground Always 10 kohms or higher M35-1 (SL+) - Body ground Always 10 kohms or higher M35-6 (SL-) - Body ground Always 10 kohms or higher M32-4 (FR+) - Body ground Always 10 kohms or higher M32-10 (FR-) - Body ground Always 10 kohms or higher M32-3 (FL+) - Body ground Always 10 kohms or higher M32-9 (FL-) - Body ground Always 10 kohms or higher M32-8 (CTR+) - Body ground Always 10 kohms or higher M32-7 (CTR-) - Body ground Always 10 kohms or higher M32-1 (WF1+) - Body ground Always 10 kohms or higher M32-5 (WF1-) - Body ground Always 10 kohms or higher w/ Manual (SOS) Switch: Measure the resistance between the front No. 2 speaker RH and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E95-1 (TWR+) - Body ground Always 10 kohms or higher E95-2 (TWR-) - Body ground Always 10 kohms or higher Measure the resistance between each of the rear speakers and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition J5-1 - Body ground Always 10 kohms or higher J5-2 - Body ground Always 10 kohms or higher K5-1 - Body ground Always 10 kohms or higher K5-2 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT FRONT NO. 1 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance W/O REAR HEADER SPEAKER Tester Connection Condition Specified Condition H8-1 - H8-2 Always 3.2 to 4.8 ohms I7-1 - I7-2 Always 3.2 to 4.8 ohms W/ REAR HEADER SPEAKER Tester Connection Condition Specified Condition H8-1 - H8-2 Always 6 to 8 ohms I7-1 - I7-2 Always 6 to 8 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 1 Speaker) NG --> See step 16 OK: Go to next step
5. INSPECT REAR SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance W/O REAR HEADER SPEAKER Tester Connection Condition Specified Condition J5-1 - J5-2 Always 3.2 to 4.8 ohms K5-1 - K5-2 Always 3.2 to 4.8 ohms W/ REAR HEADER SPEAKER Tester Connection Condition Specified Condition J5-1 - J5-2 Always 5.8 to 7.2 ohms K5-1 - K5-2 Always 5.8 to 7.2 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Speaker) NG --> See step 17 OK: Go to next step
6. INSPECT FRONT STEREO COMPONENT SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance W/O REAR HEADER SPEAKER Tester Connection Condition Specified Condition G2-1 - G2-2 Always 1.6 to 2.4 ohms W/ REAR HEADER SPEAKER Tester Connection Condition Specified Condition G2-1 - G2-2 Always 4.8 to 6.4 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front Stereo Component Speaker) NG --> See step 18 OK: Go to next step
7. INSPECT STEREO COMPONENT SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance W/O REAR HEADER SPEAKER Tester Connection Condition Specified Condition M28-4 (WF1+) - M28-3 (WF1-) Always 1.6 to 2.4 ohms M28-2 (WF2+) - M28-1 (WF2-) Always 1.6 to 2.4 ohms W/ REAR HEADER SPEAKER Tester Connection Condition Specified Condition M28-4 (WF1+) - M28-2 (WF1-) Always 5 to 7 ohms TEXT IN ILLUSTRATION *A w/o Rear Header Speaker *B w/ Rear Header Speaker *1 Component without harness connected (Stereo Component Speaker) NG --> See step 19 OK: Go to next step
8. CONFIRM MODEL Choose the model to be inspected. Result Model Proceed to w/o Rear Header Speaker A w/ Rear Header Speaker B B --> See step 11 A: Go to next step
9. INSPECT FRONT NO. 2 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E87-1 (TWR+) - E87-3 (+) Always Below 1 ohms E87-2 (TWR-) - E87-4 (-) Always Below 1 ohms E87-1 (TWR+) - E87-2 (TWR-) Always 10 kohms or higher E86-1 (TWL+) - E86-3 (+) Always Below 1 ohms E86-2 (TWL-) - E86-4 (-) Always Below 1 ohms E86-1 (TWL+) - E86-2 (TWL-) Always 10 kohms or higher TEXT IN ILLUSTRATION *A for RH *B for LH *1 Component without harness connected (Front No. 2 Speaker) NG --> See step 22 OK: Go to next step
10. REPLACE FRONT NO. 2 SPEAKER Check that the malfunction disappears when a known good speaker is installed. Refer to «REMOVAL»(ref-396678-S19670409452011050900000) . OK Malfunction disappears. HINT: Connect all the connectors to the front No. 2 speakers that were disconnected. When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one. Perform the above inspection on both LH and RH sides. NG --> See step 15 OK --> END (FRONT NO. 2 SPEAKER WAS DEFECTIVE)
11. INSPECT FRONT NO. 2 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E95-1 (TWR+) - E95-2 (TWR-) Always 4.8 to 6.4 ohms E94-1 (TWL+) - E94-2 (TWL-) Always 4.8 to 6.4 ohms TEXT IN ILLUSTRATION *A for RH *B for LH *1 Component without harness connected (Front No. 2 Speaker) NG --> See step 22 OK: Go to next step
12. INSPECT REAR NO. 2 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition K6-1 (+TW) - K6-3 (+) Always Below 1 ohms K6-2 (-TW) - K6-4 (-) Always Below 1 ohms K6-1 (+TW) - K6-2 (-TW) Always 10 kohms or higher J6-1 (+TW) - J6-3 (+) Always Below 1 ohms J6-2 (-TW) - J6-4 (-) Always Below 1 ohms J6-1 (+TW) - J6-2 (-TW) Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (Rear No. 2 Speaker) NG --> See step 23 OK: Go to next step
13. REPLACE REAR NO. 2 SPEAKER Check that the malfunction disappears when a known good speaker is installed. Refer to «REMOVAL»(ref-396678-S36636587502011050900000) . OK Malfunction disappears. HINT: Connect all the connectors to the front No. 2 speakers that were disconnected. When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one. Perform the above inspection on both LH and RH sides. NG --> See step 14 OK --> END (REAR NO. 2 SPEAKER WAS DEFECTIVE)
14. INSPECT REAR HEADER SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M26-1 - M26-2 Always 4.8 to 6.4 ohms M27-1 - M27-2 Always 4.8 to 6.4 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Header Speaker) Proceed to the next step based on the inspection result. Result Condition Proceed to OK (w/ Manual (SOS) Switch) A OK (w/o Manual (SOS) Switch) B NG C C --> See step 24 B --> See step 20 A: Go to next step
15. INSPECT DCM (TELEMATICS TRANSCEIVER) Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E97-2 (SPI+) - E97-5 (SPO+) Always Below 1 ohms E97-3 (SPI-) - E97-6 (SPO-) Always Below 1 ohms E97-2 (SPI+) - E97-3 (SPI-) Always 10 kohms or higher E97-5 (SPO+) - E97-6 (SPO-) Always 10 kohms or higher E97-3 (SPI-) - Body ground Always 10 kohms or higher E97-6 (SPO-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (DCM (Telematics Transceiver)) NG --> See step 21 OK --> See step 20
16. REPLACE FRONT NO. 1 SPEAKER. Refer to «REMOVAL»(ref-396678-S19670409452011050900000)
17. REPLACE REAR SPEAKER. Refer to «REMOVAL»(ref-396678-S36636587502011050900000)
18. REPLACE FRONT STEREO COMPONENT SPEAKER. Refer to «REMOVAL»(ref-396678-S16200948222011050900000)
19. REPLACE STEREO COMPONENT SPEAKER. Refer to «REMOVAL»(ref-396678-S42189017472011050900000)
20. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-396736-S19392826392011050900000)
21. REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to «REMOVAL»(ref-396740-S39942374592011050900000)
22. REPLACE FRONT NO. 2 SPEAKER. Refer to «REMOVAL»(ref-396678-S19670409452011050900000)
23. REPLACE REAR NO. 2 SPEAKER. Refer to «REMOVAL»(ref-396678-S36636587502011050900000)
24. REPLACE REAR HEADER SPEAKER. Refer to «REMOVAL»(ref-396678-S42189017472011050900000)

The multi-media interface ECU sends a sound signal to the display and navigation module display through this circuit.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, radio receiver assembly, display and navigation module display, DCM (telematics transceiver)*1 or speakers.

1. *1: w/ Manual (SOS) Switch

Scheme 123

The No. 1 stereo jack adapter assembly sends the sound signal from external device to the radio receiver assembly through this circuit.

The sound signal that has been sent is amplified by the stereo component amplifier assembly or radio receiver assembly, and then is sent to the speakers.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, radio receiver assembly, DCM (telematics transceiver)*1 or speakers.

1. *1: w/ Manual (SOS) Switch

Scheme 124

Scheme 125

Scheme 126

1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) Disconnect the No. 1 stereo jack adapter assembly connector and radio receiver assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z1-9 (AUXO) - E109-5 (AUXI) Always Below 1 ohms z1-8 (ASGN) - E109-21 (ASGN) Always Below 1 ohms z1-6 (ARO) - E109-19 (ARI) Always Below 1 ohms z1-7 (ALO) - E109-20 (ALI) Always Below 1 ohms z1-10 (AGND) - E109-6 (AGND) Always Below 1 ohms z1-9 (AUXO) - Body ground Always 10 kohms or higher z1-8 (ASGN) - Body ground Always 10 kohms or higher z1-6 (ARO) - Body ground Always 10 kohms or higher z1-7 (ALO) - Body ground Always 10 kohms or higher z1-10 (AGND) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) *2 Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-396736-S19392826392011050900000)

The No. 1 stereo jack adapter assembly sends the sound data from an external device to the multi-media interface ECU through this circuit.

Scheme 127

Scheme 128

Scheme 129

1. CHECK HARNESS AND CONNECTOR Disconnect the multi-media interface ECU connector. Disconnect the No. 1 stereo jack adapter assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z1-3 (UDO+) - E113-2 (UDI+) Always Below 1 ohms z1-2 (UDO-) - E113-3 (UDI-) Always Below 1 ohms z1-5 (UJSS) - E113-5 (UESS) Always Below 1 ohms z1-3 (UDO+) - Body ground Always 10 kohms or higher z1-2 (UDO-) - Body ground Always 10 kohms or higher z1-5 (UJSS) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Multi-media Interface ECU) *2 Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-396736-S19392826392011050900000)

The DCM (telematics transceiver) sends a mute signal to the stereo component amplifier assembly.

The stereo component amplifier assembly controls the volume according to the mute signal from the DCM (telematics transceiver).

Scheme 130

Scheme 131

Scheme 132

1. INSPECT DCM (TELEMATICS TRANSCEIVER) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E97-17 (MUTE) - Body ground Engine switch on (ACC), audio system is playing --> Emergency call mode Above 3.5 V --> Below 1 V TEXT IN ILLUSTRATION *1 Component with harness connected (DCM (Telematics Transceiver)) NG --> See step 2 OK --> See step 4
2. CHECK HARNESS AND CONNECTOR Disconnect the stereo component amplifier assembly connector and DCM (telematics transceiver) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M36-7 (TMUT) - E97-17 (MUTE) Always Below 1 ohms M36-7 (TMUT) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY Reconnect the stereo component amplifier assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E97-17 (MUTE) - Body ground Engine switch on (ACC) Above 3.5 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (DCM (Telematics Transceiver)) NG --> See step 5 OK --> See step 6
4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-396736-S19392826392011050900000)
5. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-396678-S22179403352011050900000)
6. REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to «REMOVAL»(ref-396740-S39942374592011050900000)

The circuit is necessary for the Automatic Sound Levelizer (ASL) built into the stereo component amplifier assembly.

Speed signals are received from the combination meter assembly and used for the ASL.

The Automatic Sound Levelizer (ASL) function automatically adjusts the radio system volume level in order to compensate for increased vehicle noise (vehicle noise tends to increase as vehicle speed increases). The ASL adjusts the volume level based upon vehicle speed signals that it receives from the combination meter.

HINT

1. A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly. The signal is changed to a pulse signal at the transistor in the combination meter assembly. Each ECU controls the respective system based on the pulse signal.
2. If a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems in the following diagram will not operate normally.

Scheme 133

Scheme 134

1. INSPECT COMBINATION METER ASSEMBLY (OUTPUT WAVEFORM) Check the output waveform. Remove the combination meter assembly with the connector still connected. Connect an oscilloscope to terminal E20-12 (+S) and body ground. Turn the engine switch on (IG). Turn a wheel slowly. Check the signal waveform according to the condition(s) in the table below. Item Condition Tool setting 5 V/DIV., 20 ms./DIV. Vehicle condition Wheel being rotated OK The waveform is similar to that shown in the illustration. HINT: When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows. TEXT IN ILLUSTRATION *1 Component with harness connected (Combination Meter Assembly) NG --> See step 8 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR Disconnect the stereo component amplifier assembly and combination meter assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M36-2 (SPD) - E20-12 (+S) Always Below 1 ohms NG --> See step 3 OK --> See step 7
3. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - NO. 4 JUNCTION BLOCK) Disconnect the stereo component amplifier assembly and No. 4 junction block connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M36-2 (SPD) - 4D-7 Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK - NO. 3 JUNCTION BLOCK) Disconnect the No. 4 junction block and No. 3 junction block connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4M-8 - 3F-5 Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT NO. 4 JUNCTION BLOCK Disconnect the No. 4 junction block connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4D-7 - 4M-8 Always Below 1 ohms NG --> REPLACE NO. 4 JUNCTION BLOCK OK: Go to next step
6. INSPECT NO. 3 JUNCTION BLOCK Disconnect the No. 3 junction block connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3F-5 - 3P-6 Always Below 1 ohms NG --> REPLACE NO. 3 JUNCTION BLOCK OK --> See step 7
7. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-396678-S22179403352011050900000)
8. GO TO METER / GAUGE SYSTEM. Refer to «Speed Signal Circuit»(ref-396647-S25441360352011050900000)

This circuit provides power to the radio receiver assembly.

Scheme 135

This circuit provides power to the stereo component amplifier assembly.

Scheme 136

This circuit provides power to the multi-media interface ECU.

Scheme 137

Scheme 138

1. INSPECT MULTI-MEDIA INTERFACE ECU Disconnect the multi-media interface ECU connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E101-12 (+B) - E101-7 (GND) Always 11 to 14 V E101-11 (ACC) - E101-7 (GND) Engine switch on (ACC) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Multi-media Interface ECU) NG --> See step 3 OK --> See step 2
2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-396736-S19392826392011050900000)
3. CHECK HARNESS AND CONNECTOR Disconnect the display and navigation module display connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E101-11 (ACC) - E107-11 (ACC) Always Below 1 ohms E101-12 (+B) - E107-12 (+B) Always Below 1 ohms E101-7 (GND) - E107-7 (GND) Always Below 1 ohms E101-11 (ACC) - Body ground Always 10 kohms or higher E101-12 (+B) - Body ground Always 10 kohms or higher E101-7 (GND) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY. Refer to «REMOVAL»(ref-396714-S12976702422011050900000)