Audio / Video System (W/ Navigation) (Diagnostic Codes & Symptom Tests): Overview Lexus HS I

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.

Scheme 107

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

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

Scheme 108

Scheme 109

Scheme 110

Scheme 111

Scheme 112

Scheme 113

Scheme 114

Scheme 115

Scheme 116

1. CHECK DTC Disconnect the F43 and F24 stereo component amplifier assembly connectors. Clear the DTCs and recheck for DTCs. Check if DTC B15C3 is output. OK DTC B15C3 is not output. NG --> See step 18 OK: Go to next step
2. CHECK OPERATION Reconnect the F24 stereo component amplifier assembly connector. 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 the F43 stereo component amplifier assembly connector, the F38 DCM (telematics transceiver) connector*1 and the I5, H5, G5, G3, K4, J4, K6, J6 speaker connectors. *1: w/ Manual (SOS) Switch 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 F43-3 (FL+) - Body ground Always 10 kohms or higher F43-8 (FL-) - Body ground Always 10 kohms or higher F43-10 (FR+) - Body ground Always 10 kohms or higher F43-9 (FR-) - Body ground Always 10 kohms or higher F43-4 (RL+) - Body ground Always 10 kohms or higher F43-11 (RL-) - Body ground Always 10 kohms or higher F43-5 (RR+) - Body ground Always 10 kohms or higher F43-12 (RR-) - 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 I5-1 - Body ground Always 10 kohms or higher I5-2 - Body ground Always 10 kohms or higher H5-1 - Body ground Always 10 kohms or higher H5-2 - 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 K4-1 - Body ground Always 10 kohms or higher K4-2 - Body ground Always 10 kohms or higher J4-1 - Body ground Always 10 kohms or higher J4-2 - 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 G3-3 (TWR+) - Body ground Always 10 kohms or higher G3-4 (TWR-) - Body ground Always 10 kohms or higher 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 G5-1 (+) - I5-1 Always Below 1 ohms G5-2 (-) - I5-2 Always Below 1 ohms G3-1 (+) - H5-1 Always Below 1 ohms G3-2 (-) - H5-2 Always Below 1 ohms 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 F43-3 (FL+) - G5-3 (TWL+) Always Below 1 ohms F43-8 (FL-) - G5-4 (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 F43-10 (FR+) - G3-3 (TWR+) Always Below 1 ohms F43-9 (FR-) - G3-4 (TWR-) Always Below 1 ohms w/ Manual (SOS) Switch Measure the resistance between the DCM (telematics transceiver) and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition F43-10 (FR+) - F38-2 (SPI+) Always Below 1 ohms F43-9 (FR-) - F38-3 (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 F38-5 (SPO+) - G3-3 (TWR+) Always Below 1 ohms F38-6 (SPO-) - G3-4 (TWR-) 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 F43-4 (RL+) - K6-3 (+TW) Always Below 1 ohms F43-11 (RL-) - K6-1 (-TW) Always Below 1 ohms F43-5 (RR+) - J6-3 (+TW) Always Below 1 ohms F43-12 (RR-) - J6-1 (-TW) Always Below 1 ohms Measure the resistance between each of the rear No. 2 speakers and the rear speakers to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition K6-4 (+) - K4-1 Always Below 1 ohms K6-2 (-) - K4-2 Always Below 1 ohms J6-4 (+) - J4-1 Always Below 1 ohms J6-2 (-) - J4-2 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 I5-1 - I5-2 Always 3.2 to 4.8 ohms H5-1 - H5-2 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 G5-3 (TWL+) - G5-4 (TWL-) Always 10 kohms or higher G3-3 (TWR+) - G3-4 (TWR-) Always 10 kohms or higher TEXT IN ILLUSTRATION *A for LH *B for RH *1 Component without harness connected (Front No. 2 Speaker) NG --> See step 13 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 K4-1 - K4-2 Always 4 to 6 ohms J4-1 - J4-2 Always 4 to 6 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Speaker) NG --> See step 15 OK: Go to next step
7. 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 K6-3 (+TW) - K6-1 (-TW) Always 10 kohms or higher J6-3 (+TW) - J6-1 (-TW) Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (Rear No. 2 Speaker) Proceed to the next step based on the inspection result. Result Result Proceed to OK (w/ Manual (SOS) Switch) A OK (w/o Manual (SOS) Switch) B NG C C --> See step 16 B --> See step 18 A: Go to next step
8. 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 F38-2 (SPI+) - F38-5 (SPO+) Always Below 1 ohms F38-3 (SPI-) - F38-6 (SPO-) Always Below 1 ohms F38-2 (SPI+) - F38-3 (SPI-) Always 10 kohms or higher F38-5 (SPO+) - F38-6 (SPO-) Always 10 kohms or higher F38-3 (SPI-) - Body ground Always 10 kohms or higher F38-6 (SPO-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (DCM (Telematics Transceiver)) NG --> See step 19 OK --> See step 18
9. CHECK HARNESS AND CONNECTOR Disconnect the F24 stereo component amplifier assembly connector and the L37, G2 speaker connectors. 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 F24-1 (WF1+) - Body ground Always 10 kohms or higher F24-5 (WF1-) - Body ground Always 10 kohms or higher F24-2 (WF2+) - Body ground Always 10 kohms or higher F24-6 (WF2-) - Body ground Always 10 kohms or higher F24-8 (CTR+) - Body ground Always 10 kohms or higher F24-7 (CTR-) - Body ground Always 10 kohms or higher Measure the resistance between the rear 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 F24-1 (WF1+) - L37-2 (WF1+) Always Below 1 ohms F24-5 (WF1-) - L37-1 (WF1-) Always Below 1 ohms F24-2 (WF2+) - L37-4 (WF2+) Always Below 1 ohms F24-6 (WF2-) - L37-3 (WF2-) Always Below 1 ohms Measure the resistance between the front No. 3 speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition F24-8 (CTR+) - G2-2 Always Below 1 ohms F24-7 (CTR-) - G2-1 Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
10. INSPECT FRONT NO. 3 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 4.8 to 7.2 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 3 Speaker) NG --> See step 14 OK: Go to next step
11. INSPECT REAR STEREO COMPONENT SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L37-2 (WF1+) - L37-1 (WF1-) Always 2.4 to 3.6 ohms L37-4 (WF2+) - L37-3 (WF2-) Always 2.4 to 3.6 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Stereo Component Speaker) NG --> See step 17 OK --> See step 18
12. REPLACE FRONT NO. 1 SPEAKER. Refer to «REMOVAL»(ref-398277-S40152031092011051600000)
13. REPLACE FRONT NO. 2 SPEAKER. Refer to «REMOVAL»(ref-398277-S02888460282011051600000)
14. REPLACE FRONT NO. 3 SPEAKER. Refer to «REMOVAL»(ref-398277-S02888460282011051600000)
15. REPLACE REAR SPEAKER. Refer to «REMOVAL»(ref-398277-S06794886652011051600000)
16. REPLACE REAR NO. 2 SPEAKER. Refer to «REMOVAL»(ref-398277-S06794886652011051600000)
17. REPLACE REAR STEREO COMPONENT SPEAKER. Refer to «REMOVAL»(ref-398277-S06734651162011051600000)
18. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-398277-S29782841752011051600000)
19. REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to «REMOVAL»(ref-398300-S33003729062011051600000)

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

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

Scheme 117

Scheme 118

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 DTC. Refer to «DTC CHECK / CLEAR»(ref-398297-S23260168942011051600000) . Recheck for DTCs and check if the same DTCs is output again. OK No DTCs is output. NG --> See step 4 OK --> END
4. REPLACE RADIO RECEIVER ASSEMBLY. Refer to «REMOVAL»(ref-398277-S29815204222011051600000)

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.

Scheme 119

Scheme 120

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-398297-S29970953592011051600000)
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 F70-3 (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 F70-17 (ILL-) - F4-10 (ILL-) Always Below 1 ohms F4-10 (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-398302-S38155881282011051600000)

If there is a short in this 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

Scheme 121

Scheme 122

Scheme 123

1. for 10 Speakers
2. for 15 Speakers

Scheme 124

Scheme 125

Scheme 126

Scheme 127

Scheme 128

Scheme 129

Scheme 130

Scheme 131

1. CONFIRM MODEL Result Result Proceed to for 10 Speakers A for 15 Speakers B B --> See step 11 A: Go to next step
2. CHECK HARNESS AND CONNECTOR Disconnect the connectors from the stereo component amplifier assembly, DCM (telematics transceiver)*1 and speakers. *1: w/ Manual (SOS) Switch 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 G5-1 (+) - I5-1 Always Below 1 ohms G5-2 (-) - I5-2 Always Below 1 ohms G3-1 (+) - H5-1 Always Below 1 ohms G3-2 (-) - H5-2 Always Below 1 ohms 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 F43-3 (FL+) - G5-3 (TWL+) Always Below 1 ohms F43-8 (FL-) - G5-4 (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 F43-10 (FR+) - G3-3 (TWR+) Always Below 1 ohms F43-9 (FR-) - G3-4 (TWR-) Always Below 1 ohms w/ Manual (SOS) Switch Measure the resistance between the DCM (telematics transceiver) and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition F43-10 (FR+) - F38-2 (SPI+) Always Below 1 ohms F43-9 (FR-) - F38-3 (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 F38-5 (SPO+) - G3-3 (TWR+) Always Below 1 ohms F38-6 (SPO-) - G3-4 (TWR-) 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 F43-4 (RL+) - K6-3 (+TW) Always Below 1 ohms F43-11 (RL-) - K6-1 (-TW) Always Below 1 ohms F43-5 (RR+) - J6-3 (+TW) Always Below 1 ohms F43-12 (RR-) - J6-1 (-TW) Always Below 1 ohms Measure the resistance between each of the rear No. 2 speakers and the rear speakers to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition K6-4 (+) - K4-1 Always Below 1 ohms K6-2 (-) - K4-2 Always Below 1 ohms J6-4 (+) - J4-1 Always Below 1 ohms J6-2 (-) - J4-2 Always Below 1 ohms Measure the resistance between the rear 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 F24-1 (WF1+) - L37-2 (WF1+) Always Below 1 ohms F24-5 (WF1-) - L37-1 (WF1-) Always Below 1 ohms F24-2 (WF2+) - L37-4 (WF2+) Always Below 1 ohms F24-6 (WF2-) - L37-3 (WF2-) Always Below 1 ohms Measure the resistance between the front No. 3 speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition F24-8 (CTR+) - G2-2 Always Below 1 ohms F24-7 (CTR-) - G2-1 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 F43-3 (FL+) - Body ground Always 10 kohms or higher F43-8 (FL-) - Body ground Always 10 kohms or higher F43-10 (FR+) - Body ground Always 10 kohms or higher F43-9 (FR-) - Body ground Always 10 kohms or higher F43-4 (RL+) - Body ground Always 10 kohms or higher F43-11 (RL-) - Body ground Always 10 kohms or higher F43-5 (RR+) - Body ground Always 10 kohms or higher F43-12 (RR-) - Body ground Always 10 kohms or higher F24-1 (WF1+) - Body ground Always 10 kohms or higher F24-5 (WF1-) - Body ground Always 10 kohms or higher F24-2 (WF2+) - Body ground Always 10 kohms or higher F24-6 (WF2-) - Body ground Always 10 kohms or higher F24-8 (CTR+) - Body ground Always 10 kohms or higher F24-7 (CTR-) - 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 I5-1 - Body ground Always 10 kohms or higher I5-2 - Body ground Always 10 kohms or higher H5-1 - Body ground Always 10 kohms or higher H5-2 - 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 K4-1 - Body ground Always 10 kohms or higher K4-2 - Body ground Always 10 kohms or higher J4-1 - Body ground Always 10 kohms or higher J4-2 - 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 G3-3 (TWR+) - Body ground Always 10 kohms or higher G3-4 (TWR-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. 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 I5-1 - I5-2 Always 3.2 to 4.8 ohms H5-1 - H5-2 Always 3.2 to 4.8 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 1 Speaker) NG --> See step 21 OK: Go to next step
4. 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 G5-3 (TWL+) - G5-4 (TWL-) Always 10 kohms or higher G5-3 (TWL+) - G5-1 (+) Always Below 1 ohms G5-4 (TWL-) - G5-2 (-) Always Below 1 ohms G3-3 (TWR+) - G3-4 (TWR-) Always 10 kohms or higher G3-3 (TWR+) - G3-1 (+) Always Below 1 ohms G3-4 (TWR-) - G3-2 (-) Always Below 1 ohms TEXT IN ILLUSTRATION *A for LH *B for RH *1 Component without harness connected (Front No. 2 Speaker) NG --> See step 22 OK: Go to next step
5. REPLACE FRONT NO. 2 SPEAKER Check that the malfunction disappears when a known good speaker is installed. Refer to «REMOVAL»(ref-398277-S02888460282011051600000) . 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 6 OK --> END (FRONT NO. 2 SPEAKER WAS DEFECTIVE)
6. INSPECT FRONT NO. 3 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 4.8 to 7.2 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 3 Speaker) NG --> See step 23 OK: Go to next step
7. INSPECT REAR SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition K4-1 - K4-2 Always 4 to 6 ohms J4-1 - J4-2 Always 4 to 6 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Speaker) NG --> See step 24 OK: Go to next step
8. 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 K6-3 (+TW) - K6-1 (-TW) Always 10 kohms or higher K6-3 (+TW) - K6-4 (+) Always Below 1 ohms K6-1 (-TW) - K6-2 (-) Always Below 1 ohms J6-3 (+TW) - J6-1 (-TW) Always 10 kohms or higher J6-3 (+TW) - J6-4 (+) Always Below 1 ohms J6-1 (-TW) - J6-2 (-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear No. 2 Speaker) NG --> See step 25 OK: Go to next step
9. REPLACE REAR NO. 2 SPEAKER Check that the malfunction disappears when a known good speaker is installed. Refer to «REMOVAL»(ref-398277-S06794886652011051600000) . OK Malfunction disappears. HINT: Connect all the connectors to the rear No. 2 speakers that were disconnected. When there is a possibility that either the right or left rear 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 10 OK --> END (REAR NO. 2 SPEAKER WAS DEFECTIVE)
10. INSPECT REAR STEREO COMPONENT SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L37-2 (WF1+) - L37-1 (WF1-) Always 2.4 to 3.6 ohms L37-4 (WF2+) - L37-3 (WF2-) Always 2.4 to 3.6 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Stereo Component Speaker) Proceed to the next step based on the inspection result. Result Result Proceed to OK (w/o Manual (SOS) Switch) A OK (w/ Manual (SOS) Switch) B NG C C --> See step 27 B --> See step 20 A --> See step 28
11. CHECK HARNESS AND CONNECTOR Disconnect the connectors from the stereo component amplifier assembly, DCM (telematics transceiver)*1 and speakers. *1: w/ Manual (SOS) Switch Measure the resistance between the front No. 1 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 F43-3 (FL+) - I5-1 Always Below 1 ohms F43-8 (FL-) - I5-2 Always Below 1 ohms w/o Manual (SOS) Switch Measure the resistance between the front No. 1 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 F43-10 (FR+) - H5-1 Always Below 1 ohms F43-9 (FR-) - H5-2 Always Below 1 ohms w/ Manual (SOS) Switch Measure the resistance between the DCM (telematics transceiver) and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition F43-10 (FR+) - F38-2 (SPI+) Always Below 1 ohms F43-9 (FR-) - F38-3 (SPI-) Always Below 1 ohms w/ Manual (SOS) Switch Measure the resistance between the front No. 1 speaker RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition F38-5 (SPO+) - H5-1 Always Below 1 ohms F38-6 (SPO-) - H5-2 Always Below 1 ohms Measure the resistance between each of the front 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 F24-4 (MR+) - G4-2 Always Below 1 ohms F24-10 (MR-) - G4-1 Always Below 1 ohms F24-3 (ML+) - G6-2 Always Below 1 ohms F24-9 (ML-) - G6-1 Always Below 1 ohms Measure the resistance between the front No. 3 speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition F24-8 (CTR+) - G2-2 Always Below 1 ohms F24-7 (CTR-) - G2-1 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 F43-5 (RR+) - J6-3 (+TW) Always Below 1 ohms F43-12 (RR-) - J6-1 (-TW) Always Below 1 ohms F43-4 (RL+) - K6-3 (+TW) Always Below 1 ohms F43-11 (RL-) - K6-1 (-TW) Always Below 1 ohms Measure the resistance between each of the rear No. 2 speakers and the rear speakers to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition J6-4 (+) - J4-1 Always Below 1 ohms J6-2 (-) - J4-2 Always Below 1 ohms K6-4 (+) - K4-1 Always Below 1 ohms K6-2 (-) - K4-2 Always Below 1 ohms Measure the resistance between the rear 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 F24-1 (WF1+) - L37-2 (WF1+) Always Below 1 ohms F24-5 (WF1-) - L37-1 (WF1-) Always Below 1 ohms Measure the resistance between each of the rear No. 3 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition F43-2 (R+) - L36-2 Always Below 1 ohms F43-7 (R-) - L36-1 Always Below 1 ohms F43-1 (L+) - L23-2 Always Below 1 ohms F43-6 (L-) - L23-1 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 F43-10 (FR+) - Body ground Always 10 kohms or higher F43-9 (FR-) - Body ground Always 10 kohms or higher F43-3 (FL+) - Body ground Always 10 kohms or higher F43-8 (FL-) - Body ground Always 10 kohms or higher F43-5 (RR+) - Body ground Always 10 kohms or higher F43-12 (RR-) - Body ground Always 10 kohms or higher F43-4 (RL+) - Body ground Always 10 kohms or higher F43-11 (RL-) - Body ground Always 10 kohms or higher F43-2 (R+) - Body ground Always 10 kohms or higher F43-7 (R-) - Body ground Always 10 kohms or higher F43-1 (L+) - Body ground Always 10 kohms or higher F43-6 (L-) - Body ground Always 10 kohms or higher F24-1 (WF1+) - Body ground Always 10 kohms or higher F24-5 (WF1-) - Body ground Always 10 kohms or higher F24-4 (MR+) - Body ground Always 10 kohms or higher F24-10 (MR-) - Body ground Always 10 kohms or higher F24-3 (ML+) - Body ground Always 10 kohms or higher F24-9 (ML-) - Body ground Always 10 kohms or higher F24-8 (CTR+) - Body ground Always 10 kohms or higher F24-7 (CTR-) - Body ground Always 10 kohms or higher Measure the resistance between each of the rear No. 2 speakers and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition J6-4 (+) - Body ground Always 10 kohms or higher J6-2 (-) - Body ground Always 10 kohms or higher K6-4 (+) - Body ground Always 10 kohms or higher K6-2 (-) - Body ground Always 10 kohms or higher w/ Manual (SOS) Switch Measure the resistance between each of the front No. 1 speaker RH and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition H5-1 - Body ground Always 10 kohms or higher H5-2 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
12. 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 H5-1 - H5-2 Always 5 to 7 ohms I5-1 - I5-2 Always 5 to 7 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 1 Speaker) NG --> See step 21 OK: Go to next step
13. 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 G4-1 - G4-2 Always 4.6 to 7 ohms G6-1 - G6-2 Always 4.6 to 7 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 2 Speaker) NG --> See step 22 OK: Go to next step
14. INSPECT FRONT NO. 3 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 4.6 to 7 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 3 Speaker) NG --> See step 23 OK: Go to next step
15. INSPECT REAR SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition J4-1 - J4-2 Always 4.8 to 7.2 ohms K4-1 - K4-2 Always 4.8 to 7.2 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Speaker) NG --> See step 24 OK: Go to next step
16. 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 K6-3 (+TW) - K6-1 (-TW) Always 10 kohms or higher K6-3 (+TW) - K6-4 (+) Always Below 1 ohms K6-1 (-TW) - K6-2 (-) Always Below 1 ohms J6-3 (+TW) - J6-1 (-TW) Always 10 kohms or higher J6-3 (+TW) - J6-4 (+) Always Below 1 ohms J6-1 (-TW) - J6-2 (-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear No. 2 Speaker) NG --> See step 25 OK: Go to next step
17. REPLACE REAR NO. 2 SPEAKER Check that the malfunction disappears when a known good speaker is installed. Refer to «REMOVAL»(ref-398277-S06794886652011051600000) . OK Malfunction disappears. HINT: Connect all the connectors to the rear No. 2 speakers that were disconnected. When there is a possibility that either the right or left rear 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 18 OK --> END (REAR NO. 2 SPEAKER WAS DEFECTIVE)
18. INSPECT REAR NO. 3 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L36-1 - L36-2 Always 4.6 to 7 ohms L23-1 - L23-2 Always 4.6 to 7 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear No. 3 Speaker) NG --> See step 26 OK: Go to next step
19. INSPECT REAR STEREO COMPONENT SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L37-2 (WF1+) - L37-1 (WF1-) Always 10 to 18 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Stereo Component Speaker) Proceed to the next step based on the inspection result. Result Result Proceed to OK (w/ Manual (SOS) Switch) A OK (w/o Manual (SOS) Switch) B NG C C --> See step 27 B --> See step 28 A: Go to next step
20. 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 F38-2 (SPI+) - F38-5 (SPO+) Always Below 1 ohms F38-3 (SPI-) - F38-6 (SPO-) Always Below 1 ohms F38-2 (SPI+) - F38-3 (SPI-) Always 10 kohms or higher F38-5 (SPO+) - F38-6 (SPO-) Always 10 kohms or higher F38-3 (SPI-) - Body ground Always 10 kohms or higher F38-6 (SPO-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (DCM (Telematics Transceiver)) NG --> See step 29 OK --> See step 28
21. REPLACE FRONT NO. 1 SPEAKER. Refer to «REMOVAL»(ref-398277-S40152031092011051600000)
22. REPLACE FRONT NO. 2 SPEAKER. Refer to «REMOVAL»(ref-398277-S02888460282011051600000)
23. REPLACE FRONT NO. 3 SPEAKER. Refer to «REMOVAL»(ref-398277-S02888460282011051600000)
24. REPLACE REAR SPEAKER. Refer to «REMOVAL»(ref-398277-S06794886652011051600000)
25. REPLACE REAR NO. 2 SPEAKER. Refer to «REMOVAL»(ref-398277-S06794886652011051600000)
26. REPLACE REAR NO. 3 SPEAKER. Refer to «REMOVAL»(ref-398277-S06794886652011051600000)
27. REPLACE REAR STEREO COMPONENT SPEAKER. Refer to «REMOVAL»(ref-398277-S06734651162011051600000)
28. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-398297-S29970953592011051600000)
29. REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to «REMOVAL»(ref-398300-S33003729062011051600000)

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 132

The No. 1 stereo jack adapter assembly sends an external device sound signal 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 133

Scheme 134

Scheme 135

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 F132-9 (AUXO) - F81-5 (AUXI) Always Below 1 ohms F132-6 (ARO) - F81-19 (ARI) Always Below 1 ohms F132-7 (ALO) - F81-20 (ALI) Always Below 1 ohms F132-10 (AGND) - F81-6 (AGND) Always Below 1 ohms F132-8 (ASGN) - F81-21 (ASGN) Always Below 1 ohms F132-9 (AUXO) - Body ground Always 10 kohms or higher F132-8 (ASGN) - Body ground Always 10 kohms or higher F132-6 (ARO) - Body ground Always 10 kohms or higher F132-7 (ALO) - Body ground Always 10 kohms or higher F132-10 (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-398297-S29970953592011051600000)

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

Scheme 136

Scheme 137

Scheme 138

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 F132-5 (UJSS) - F133-5 (UESS) Always Below 1 ohms F132-3 (UDO+) - F133-2 (UDI+) Always Below 1 ohms F132-2 (UDO-) - F133-3 (UDI-) Always Below 1 ohms F132-5 (UJSS) - Body ground Always 10 kohms or higher F132-3 (UDO+) - Body ground Always 10 kohms or higher F132-2 (UDO-) - 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-398297-S29970953592011051600000)

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 139

Scheme 140

Scheme 141

1. INSPECT DCM (TELEMATICS TRANSCEIVER) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F38-17 (MUTE) - Body ground Power 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 F49-7 (TMUT) - F38-17 (MUTE) Always Below 1 ohms F49-7 (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 F38-17 (MUTE) - Body ground Power switch on (ACC) Above 3.5 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to 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-398297-S29970953592011051600000)
5. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-398277-S29782841752011051600000)
6. REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to «REMOVAL»(ref-398300-S33003729062011051600000)

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

The Automatic Sound Levelizer (ASL) function automatically adjusts the audio 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 142

Scheme 143

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 F4-40 (+S) and body ground. Turn the power 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 6 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR Disconnect the stereo component amplifier 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 F42-2 (SPD) - F4-40 (+S) Always Below 1 ohms NG --> See step 3 OK --> See step 5
3. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - JUNCTION CONNECTOR) Disconnect the stereo component amplifier assembly connector. Disconnect the junction connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F42-2 (SPD) - F96-34 Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR) Disconnect the junction connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F96-34 - F96-53 Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (JUNCTION CONNECTOR) OK --> See step 5
5. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-398277-S29782841752011051600000)
6. GO TO METER / GAUGE SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE»(ref-398239-S22475554722011051600000)

This circuit provides power to the radio receiver assembly.

Scheme 144

This circuit provides power to the stereo component amplifier assembly.

Scheme 145

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

Scheme 146

Scheme 147

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 F80-12 (+B) - F80-7 (GND) Power switch off 11 to 14 V F80-11 (ACC) - F80-7 (GND) Power 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-398297-S29970953592011051600000)
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 F80-11 (ACC) - F33-11 (ACC) Always Below 1 ohms F80-12 (+B) - F33-12 (+B) Always Below 1 ohms F80-7 (GND) - F33-7 (GND) Always Below 1 ohms F80-11 (ACC) - Body ground Always 10 kohms or higher F80-12 (+B) - Body ground Always 10 kohms or higher F80-7 (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-398301-S31731244982011051600000)