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Contents Section: Entertainment Systems All sections

Audio / Visual (Diagnostic Codes & Circuit Tests): Diagnosis Lexus GS III рестайлинг

Entertainment Systems 38 illustrations ~5341 words

INSPECTION PROCEDURE

HINT

After the inspection is completed, clear the DTCs.

Note. Be sure to read DESCRIPTION before performing the following procedures.

Note. Be sure to read DESCRIPTION before performing the following procedures.

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Scheme 218: PROCEDURE
Scheme 218: PROCEDURE

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  1. CHECK MULTI-DISPLAY POWER SOURCE CIRCUIT Refer to the multi-display power source circuit. Refer to «Multi-display Power Source Circuit»(ref-387173-S38893476092011022400000) . If the power source circuit is operating normally, proceed to the next step. NEXT: Go to next step
  2. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE Enter the diagnostic mode. Press the "LAN Mon" switch to change to "LAN Monitor" mode. Identify the component which has stored this code. COMPONENT TABLE Display Component AUDIO H/U Radio receiver DSP-AMP Stereo component amplifier G/W Gateway ECU HINT: "G/W" is the component which has stored this code in the example shown in the illustration. NEXT: Go to next step
  3. CHECK POWER SOURCE CIRCUIT OF COMPONENT WHICH HAS STORED THIS CODE Inspect the power source circuit of the component which has stored this code. If the power source circuit is operating normally, proceed to the next step. COMPONENT TABLE: Component Proceed to Radio receiver (AUDIO H/U) Radio receiver power source circuit. Refer to «Radio Receiver Power Source Circuit»(ref-387172-S33767789882011022400000) Stereo component amplifier (DSP-AMP) Stereo component amplifier power source circuit. Refer to «Stereo Component Amplifier Power Source Circuit»(ref-387172-S30019823112011022400000) Gateway ECU (G/W) Gateway ECU power source circuit. Refer to «Gateway ECU Power Source Circuit»(ref-387172-S36310091602011022400000) NEXT: Go to next step
  4. INSPECT RADIO RECEIVER Disconnect the K53, K54 and K56 receiver connectors. Measure the resistance of the receiver. Standard resistance Tester Connection Specified Condition K53-9 (TXM+) - K53-10 (TXM-) 60 to 80 ohms K54-5 (ATX+) - K54-15 (ATX-) 60 to 80 ohms K56-9 (TX+) - K56-10 (TX-) 60 to 80 ohms NG --> REPLACE RADIO RECEIVER ASSEMBLY OK: Go to next step
  5. CHECK WIRE HARNESS (MULTI-DISPLAY - COMPONENT WHICH HAS STORED THIS CODE) HINT: For details of the connectors, refer to "TERMINALS OF ECU". Refer to «TERMINALS OF ECU»(ref-387171-S34649818612011022400000) . Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the multi-display and the component which has stored this code. Disconnect all connectors between the multi-display and the component which has stored this code. Check for an open or short in the AVC-LAN circuit between the multi-display and the component which has stored this code. OK There is no open or short circuit. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. REPLACE COMPONENT WHICH HAS STORED THIS CODE Replace the component which has stored this code with a normal one and check if the same problem occurs again. OK Same problem does not occur. NG --> REPLACE MULTI-DISPLAY OK --> END

Note. Be sure to read DESCRIPTION before performing the following procedures.

Note. Be sure to read DESCRIPTION before performing the following procedures.

Note. Be sure to read DESCRIPTION before performing the following procedures.

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  1. CHECK MULTI-DISPLAY POWER SOURCE CIRCUIT Refer to the multi-display power source circuit. Refer to «Multi-display Power Source Circuit»(ref-387173-S38893476092011022400000) . If the power source circuit is operating normally, proceed to the next step. NEXT: Go to next step
  2. INSPECT RADIO RECEIVER Disconnect the K53, K54 and K56 receiver connectors. Measure the resistance of the receiver. Standard resistance Tester Connection Specified Condition K53-9 (TXM+) - K53-10 (TXM-) 60 to 80 ohms K54-5 (ATX+) - K54-15 (ATX-) 60 to 80 ohms K56-9 (TX+) - K56-10 (TX-) 60 to 80 ohms NG --> REPLACE RADIO RECEIVER ASSEMBLY OK: Go to next step
  3. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE Enter the diagnostic mode. Press the "LAN Mon" switch to change to "LAN Monitor" mode. Identify the component which has stored this code. COMPONENT TABLE Display Component AUDIO H/U Radio receiver DSP-AMP Stereo component amplifier G/W Gateway ECU HINT: "G/W" is the component which has stored this code in the example shown in the illustration. NEXT: Go to next step
  4. CHECK WIRE HARNESS (MULTI-DISPLAY - COMPONENT WHICH HAS STORED THIS CODE) HINT: For details of the connectors, refer to "TERMINALS OF ECU". Refer to «TERMINALS OF ECU»(ref-387171-S34649818612011022400000) . Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the multi-display and the component which has stored this code. Disconnect all connectors between the multi-display and the component which has stored this code. Check for an open or short in the AVC-LAN circuit between the multi-display and the component which has stored this code. OK There is no open or short circuit. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK WIRE HARNESS (MULTI-DISPLAY - RADIO RECEIVER) HINT: For details of the connectors, refer to "TERMINALS OF ECU". Refer to «TERMINALS OF ECU»(ref-387171-S34649818612011022400000) . Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the multi-display and the radio receiver. Disconnect all connectors between the multi-display and the radio receiver. Check for an open or short in the AVC-LAN circuit between the multi-display and the radio receiver. OK There is no open or short circuit. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. REPLACE MULTI-DISPLAY WITH NORMAL ONE AND CHECK Replace the multi-display with a normal one and check if the same problem occurs again. OK Same problem does not occur. NG --> REPLACE COMPONENT WHICH HAS STORED THIS CODE OK --> END

HINT

  1. After the inspection is completed, clear the DTCs.
  2. These DTCs do not indicate a malfunction.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

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Scheme 222: PROCEDURE

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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 antistatic preservative. NEXT: Go to next step
  3. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-387171-S27895678712011022400000) . NEXT: Go to next step
  4. RECHECK DTC Recheck DTCs and check if the same trouble occurs again. OK Malfunction disappears. OK --> END NG: Go to next step
  5. REPLACE DISC WITH ANOTHER AND RECHECK Replace the disc and recheck. Replace the disc with a normal one. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387171-S27895678712011022400000) . Recheck for DTCs and check if the same trouble occurs again. OK Malfunction disappears. NG --> REPLACE RADIO RECEIVER OK --> END

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

Note. This code may be output even if there is no malfunction. If this code is output frequently, replace the radio receiver.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

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Scheme 224: PROCEDURE
Scheme 224: PROCEDURE

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  1. CHECK WIRE HARNESS (MULTI-DISPLAY - TELEVISION CAMERA) Disconnect the K47 display connector. Disconnect the Y8 camera connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition Y8-4 (CB+) - K47-13 (CA+) Below 1 ohms Y8-3 (CGND) - K47-14 (CGND) Below 1 ohms Y8-2 (CV+) - K47-27 (V+) Below 1 ohms Y8-1 (CV-) - K47-28 (V-) Below 1 ohms Y8-4 (CB+) - Body ground 10 kohms or higher Y8-3 (CGND) - Body ground 10 kohms or higher Y8-2 (CV+) - Body ground 10 kohms or higher Y8-1 (CV-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK MULTI-DISPLAY (CA+ VOLTAGE) Measure the voltage of the display. Standard voltage Tester Connection Condition Specified Condition K47-13 (CA+) - K47-14 (CGND) Power switch ON (IG), shift lever in R position Approx. 6 V NG --> REPLACE MULTI-DISPLAY OK --> REPLACE TELEVISION CAMERA ASSEMBLY

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection completed, clear the DTCs.

Note. This code may be output even if there is no malfunction. If this code is output frequently, replace the radio receiver.

HINT

After the inspection is completed, clear the DTCs.

HINT

After the inspection is completed, clear the DTCs.

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  1. CHECK AUDIO MODELS Check the audio model. RESULT Model Proceed to CD changer models A DVD changer models B B --> See step 22 A: Go to next step
  2. INSPECT STEREO COMPONENT AMPLIFIER Disconnect the U30 and U44 receiver connectors. Clear the DTC and recheck. Check if DTC 74-40 is output. OK DTC 74-40 is not output. NG --> REPLACE STEREO COMPONENT AMPLIFIER OK: Go to next step
  3. CHECK OPERATION Reconnect the U30 and U44 receiver connectors. Check if DTC 74-40 is output. OK DTC 74-40 is not output. OK --> END NG: Go to next step
  4. CHECK SPEAKER Check the malfunctioning speakers. RESULT Result Proceed to Malfunction in front speaker area A Malfunction in rear speaker area B B --> See step 15 A: Go to next step
  5. CHECK SPEAKER Check the malfunctioning speakers. RESULT Result Proceed to Front stereo component speaker A Front No. 2 speaker B Front No. 1 speaker C C --> See step 13 B --> See step 8 A: Go to next step
  6. INSPECT FRONT STEREO COMPONENT SPEAKER Disconnect the L2 speaker connector. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 1 - 2 Approx. 10 ohms NG --> REPLACE FRONT STEREO COMPONENT SPEAKER OK: Go to next step
  7. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT STEREO COMPONENT SPEAKER) Disconnect the L2 speaker connector. Disconnect the U44 amplifier connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U44-3 (CTR+) - L2-1 Below 1 ohms U44-9 (CTR-) - L2-2 Below 1 ohms U44-3 (CTR+) - Body ground 10 kohms or higher U44-9 (CTR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER
  8. INSPECT FRONT NO. 2 SPEAKER Disconnect the K23 and K62 speaker connectors. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition K23-1 (TWL+) - K23-2 (TWL-) Approx. 4 ohms K62-1 (TWR+) - K62-2 (TWR-) Approx. 4 ohms NG --> REPLACE FRONT NO. 2 SPEAKER OK: Go to next step
  9. CHECK DEFECTIVE SPEAKER AND VEHICLE EQUIPMENT Check which side of the vehicle the defective speaker is on. Also, check if the vehicle is equipped with the LEXUS Link System. RESULT Defective speaker location Specified Condition Defective speaker is on right side (with LEXUS Link System) A Defective speaker is on right side (without LEXUS Link System) B Defective speaker is on left side (with LEXUS Link System) B B --> See step 12 A: Go to next step
  10. CHECK WIRE HARNESS (MAYDAY ECU - STEREO COMPONENT AMPLIFIER AND FRONT NO. 2 SPEAKER) Disconnect the U30 amplifier connector. Disconnect the K62 speaker connector. Disconnect the U45 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K62-1 (TWR+) - U45-2 (SPO+) Below 1 ohms K62-2 (TWR-) - U45-3 (SPO-) Below 1 ohms U30-8 (FR+) - U45-10 (SPI+) Below 1 ohms U30-7 (FR-) - U45-11 (SPI-) Below 1 ohms K62-1 (TWR+) - Body ground 10 kohms or higher K62-2 (TWR-) - Body ground 10 kohms or higher U30-8 (FR+) - Body ground 10 kohms or higher U30-7 (FR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  11. CHECK STEREO COMPONENT AMPLIFIER (OPERATION) After replacing the stereo component amplifier with a normal one, check that audio sound can be heard from the front RH side speaker. OK Audio sound can be heard. NG --> REPLACE MAYDAY ECU OK --> END (STEREO COMPONENT AMPLIFIER IS DEFECTIVE)
  12. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) Disconnect the U30 amplifier connector. Disconnect the K23 and K62 speaker connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U30-2 (FL+) - K23-1 (TWL+) Below 1 ohms U30-6 (FL-) - K23-2 (TWL-) Below 1 ohms U30-8 (FR+) - K62-1 (TWR+) Below 1 ohms U30-7 (FR-) - K62-2 (TWR-) Below 1 ohms U30-2 (FL+) - Body ground 10 kohms or higher U30-6 (FL-) - Body ground 10 kohms or higher U30-8 (FR+) - Body ground 10 kohms or higher U30-7 (FR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER
  13. INSPECT FRONT NO. 1 SPEAKER Disconnect the M7 and M1 speaker connectors. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 1 - 2 Approx. 4 ohms NG --> REPLACE FRONT NO. 1 SPEAKER OK: Go to next step
  14. CHECK WIRE HARNESS (FRONT NO. 2 SPEAKER - FRONT NO. 1 SPEAKER) Disconnect the K23, K62, M7 and M1 speaker connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K23-3 (+) - M7-1 Below 1 ohms K23-4 (-) - M7-2 Below 1 ohms K62-3 (+) - M1-1 Below 1 ohms K62-4 (-) - M1-2 Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE FRONT NO. 2 SPEAKER
  15. CHECK SPEAKER Check the malfunctioning speakers. RESULT Result Proceed to Rear No. 2 speaker A Rear No. 1 speaker B Stereo component speaker C C --> See step 20 B --> See step 18 A: Go to next step
  16. INSPECT REAR NO. 2 SPEAKER Disconnect the S8 and S4 speaker connectors. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 1 (+TW) - 2 (-TW) Approx. 4 ohms NG --> REPLACE REAR NO. 2 SPEAKER OK: Go to next step
  17. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - REAR NO. 2 SPEAKER) Disconnect the U30 amplifier connector. Disconnect the S8 and S4 speaker connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U30-3 (RL+) - S8-1 (+TW) Below 1 ohms U30-9 (RL-) - S8-2 (-TW) Below 1 ohms U30-4 (RR+) - S4-1 (+TW) Below 1 ohms U30-10 (RR-) - S4-2 (-TW) Below 1 ohms U30-3 (RL+) - Body ground 10 kohms or higher U30-9 (RL-) - Body ground 10 kohms or higher U30-4 (RR+) - Body ground 10 kohms or higher U30-10 (RR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER
  18. INSPECT REAR NO. 1 SPEAKER Disconnect the O1 and O6 speaker connectors. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 1 - 2 Approx. 4 ohms NG --> REPLACE REAR NO. 1 SPEAKER OK: Go to next step
  19. CHECK WIRE HARNESS (REAR NO. 2 SPEAKER - REAR NO. 1 SPEAKER) Disconnect the S8, S4, O1 and O6 speaker connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition S8-3 (+) - O6-1 Below 1 ohms S8-4 (-) - O6-2 Below 1 ohms S4-3 (+) - O1-1 Below 1 ohms S4-4 (-) - O1-2 Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE REAR NO. 2 SPEAKER
  20. INSPECT STEREO COMPONENT SPEAKER Disconnect the U21 speaker connector. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 1 (WF2-) - 2 (WF2+) Approx. 2.5 ohms 3 (WF1-) - 4 (WF1+) NG --> REPLACE STEREO COMPONENT AMPLIFIER OK: Go to next step
  21. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - STEREO COMPONENT SPEAKER) Disconnect the U44 amplifier connector. Disconnect the U21 speaker connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U44-1 (WF1+) - U21-4 (WF1+) Below 1 ohms U44-5 (WF1-) - U21-3 (WF1-) Below 1 ohms U44-2 (WF2+) - U21-2 (WF2+) Below 1 ohms U44-6 (WF2-) - U21-1 (WF2-) Below 1 ohms U44-1 (WF1+) - Body ground 10 kohms or higher U44-5 (WF1-) - Body ground 10 kohms or higher U44-2 (WF2+) - Body ground 10 kohms or higher U44-6 (WF2-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER
  22. INSPECT STEREO COMPONENT AMPLIFIER Disconnect the U30 and U31 amplifier connectors. Clear the DTC and recheck. Check if DTC 74-40 is output. OK DTC74-40 is not output. NG --> REPLACE STEREO COMPONENT AMPLIFIER OK: Go to next step
  23. CHECK OPERATION Reconnect the U30 and U31 amplifier connectors. Check that audio can be heard from the speaker. OK Audio can be heard. OK --> END NG: Go to next step
  24. CHECK SPEAKER Check the malfunctioning speakers. RESULT Result Proceed to Malfunction in front speaker area A Malfunction in rear speaker area B B --> See step 35 A: Go to next step
  25. CHECK SPEAKER Check the malfunctioning speakers. RESULT Result Proceed to Front stereo component speaker A Front No. 2 speaker B Front No. 1 speaker C C --> See step 33 B --> See step 28 A: Go to next step
  26. INSPECT FRONT STEREO COMPONENT SPEAKER Disconnect the L2 speaker connector. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 1 - 2 7 to 9 ohms NG --> REPLACE FRONT STEREO COMPONENT SPEAKER OK: Go to next step
  27. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT STEREO COMPONENT SPEAKER) Disconnect the L2 speaker connector. Disconnect the U31 amplifier connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U31-3 (CTR+) - L2-1 Below 1 ohms U31-12 (CTR-) - L2-2 Below 1 ohms U31-3 (CTR+) - Body ground 10 kohms or higher U31-12 (CTR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER
  28. INSPECT FRONT NO. 2 SPEAKER Disconnect the K23 and K62 speaker connectors. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition K23-1 (TWL+) - K23-2 (TWL-) 6 to 10 ohms K62-1 (TWR+) - K62-2 (TWR-) 6 to 10 ohms NG --> REPLACE FRONT NO. 2 SPEAKER OK: Go to next step
  29. CHECK DEFECTIVE SPEAKER AND VEHICLE EQUIPMENT Check which side of the vehicle the defective speaker is on. Also, check if the vehicle is equipped with the LEXUS Link System. RESULT Defective speaker location Specified Condition Defective speaker is on right side (with LEXUS Link System) A Defective speaker is on right side (without LEXUS Link System) B Defective speaker is on left side (with LEXUS Link System) B B --> See step 32 A: Go to next step
  30. CHECK WIRE HARNESS (MAYDAY ECU - STEREO COMPONENT AMPLIFIER AND FRONT NO. 2 SPEAKER) Disconnect the U31 amplifier connector. Disconnect the K62 speaker connector. Disconnect the U45 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K62-1 (TWR+) - U45-2 (SPO+) Below 1 ohms K62-2 (TWR-) - U45-3 (SPO-) Below 1 ohms U31-9 (FR+) - U45-10 (SPI+) Below 1 ohms U31-20 (FR-) - U45-11 (SPI-) Below 1 ohms K62-1 (TWR+) - Body ground 10 kohms or higher K62-2 (TWR-) - Body ground 10 kohms or higher U31-9 (FR+) - Body ground 10 kohms or higher U31-20 (FR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  31. CHECK STEREO COMPONENT AMPLIFIER (OPERATION) After replacing the stereo component amplifier with a normal one, check that audio sound can be heard from the front RH side speaker. OK Audio sound can be heard. NG --> REPLACE MAYDAY ECU OK --> END (STEREO COMPONENT AMPLIFIER IS DEFECTIVE)
  32. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) Disconnect the U31 amplifier connector. Disconnect the K23 and K62 speaker connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U31-8 (FL+) - K23-1 (TWL+) Below 1 ohms U31-19 (FL-) - K23-2 (TWL-) Below 1 ohms U31-9 (FR+) - K62-1 (TWR+) Below 1 ohms U31-20 (FR-) - K62-2 (TWR-) Below 1 ohms U31-8 (FL+) - Body ground 10 kohms or higher U31-19 (FL-) - Body ground 10 kohms or higher U31-9 (FR+) - Body ground 10 kohms or higher U31-20 (FR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER
  33. INSPECT FRONT NO. 1 SPEAKER Disconnect the M8 and M2 speaker connectors. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 1 - 2 6 to 10 ohms NG --> REPLACE FRONT NO. 1 SPEAKER OK: Go to next step
  34. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT NO. 1 SPEAKER) Disconnect the U30 amplifier connector. Disconnect the M8 and M2 speaker connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U30-3 (WFL+) - M8-1 Below 1 ohms U30-9 (WFL-) - M8-2 Below 1 ohms U30-4 (WFR+) - M2-1 Below 1 ohms U30-10 (WFR-) - M2-2 Below 1 ohms U30-3 (WFL+) - Body ground 10 kohms or higher U30-9 (WFL-) - Body ground 10 kohms or higher U30-4 (WFR+) - Body ground 10 kohms or higher U30-10 (WFR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER
  35. CHECK SPEAKER Check the malfunction speakers. RESULT Result Proceed to Rear No. 2 speaker A Rear No. 1 speaker B Rear header speaker C Stereo component speaker D D --> See step 42 C --> See step 40 B --> See step 38 A: Go to next step
  36. INSPECT REAR NO. 2 SPEAKER Check that the malfunction disappears when the speaker is replaced with a normal one. OK Malfunction disappears. HINT: Connect all the connectors to the rear No. 2 speakers. 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 inspection above on both LH and RH sides. OK --> REPLACE REAR NO. 2 SPEAKER NG: Go to next step
  37. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - REAR NO. 2 SPEAKER) Disconnect the U31 amplifier connector. Disconnect the S8 and S4 speaker connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U31-6 (RL+) - S8-1 (+TW) Below 1 ohms U31-17 (RL-) - S8-2 (-TW) Below 1 ohms U31-7 (RR+) - S4-1 (+TW) Below 1 ohms U31-18 (RR-) - S4-2 (-TW) Below 1 ohms U31-6 (RL+) - Body ground 10 kohms or higher U31-17 (RL-) - Body ground 10 kohms or higher U31-7 (RR+) - Body ground 10 kohms or higher U31-18 (RR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER
  38. INSPECT REAR NO. 1 SPEAKER Disconnect the O6 and O1 speaker connectors. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 1 - 2 6 to 10 ohms NG --> REPLACE REAR NO. 1 SPEAKER OK: Go to next step
  39. CHECK WIRE HARNESS (REAR NO. 2 SPEAKER - REAR NO. 1 SPEAKER) Disconnect the O6, O1, S8 and S4 speaker connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition S8-3 (+) - O6-1 Below 1 ohms S8-4 (-) - O6-2 Below 1 ohms S4-3 (+) - O1-1 Below 1 ohms S4-4 (-) - O1-2 Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE REAR NO. 2 SPEAKER
  40. INSPECT REAR HEADER SPEAKER Disconnect the V21 and U17 speaker connectors. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 1 - 2 7 to 9 ohms NG --> REPLACE REAR HEADER SPEAKER OK: Go to next step
  41. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - REAR HEADER SPEAKER) Disconnect the U30 amplifier connector. Disconnect the V21 and U17 speaker connectors. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U30-1 (SL+) - V21-1 Below 1 ohms U30-5 (SL-) - V21-2 Below 1 ohms U30-2 (SR+) - U17-1 Below 1 ohms U30-6 (SR-) - U17-2 Below 1 ohms U30-1 (SL+) - Body ground 10 kohms or higher U30-5 (SL-) - Body ground 10 kohms or higher U30-2 (SR+) - Body ground 10 kohms or higher U30-6 (SR-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER
  42. INSPECT STEREO COMPONENT SPEAKER Disconnect the U21 speaker connector. Measure the resistance of the speaker. Standard resistance Tester Connection Specified Condition 4 (WF1+) - 2 (WF2+) 12.5 to 16.5 ohms NG --> REPLACE STEREO COMPONENT SPEAKER OK: Go to next step
  43. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - STEREO COMPONENT SPEAKER) Disconnect the U31 amplifier connector. Disconnect the U21 speaker connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition U31-5 (WF1+) - U21-4 (WF1+) Below 1 ohms U31-4 (WF2+) - U21-2 (WF2+) Below 1 ohms U31-5 (WF1+) - Body ground 10 kohms or higher U31-4 (WF2+) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE STEREO COMPONENT AMPLIFIER

Note. The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the PRECAUTION for the supplemental restraint system. Refer to PRECAUTION .

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  1. INSPECT STEERING PAD SWITCH ASSEMBLY Disconnect the switch connector. Measure the resistance of the switch. Standard resistance Tester connection Condition Specified condition A-9 (AU2) - A-8 (EAU) No switch is pushed 95 to 105 kohms A-9 (AU2) - A-8 (EAU) MODE switch pushed Below 2.5 ohms A-9 (AU2) - A-8 (EAU) ON HOOK switch pushed 313.5 to 346.5 ohms A-9 (AU2) - A-8 (EAU) OFF HOOK switch pushed 959.5 to 1060.5 ohms A-9 (AU2) - A-8 (EAU) VOICE switch pushed 3049.5 to 3370.5 ohms A-10 (AU1) - A-8 (EAU) No switch is pushed 95 to 105 kohms A-10 (AU1) - A-8 (EAU) SEEK+ switch pushed Below 2.5 ohms A-10 (AU1) - A-8 (EAU) SEEK- switch pushed 313.5 to 346.5 ohms A-10 (AU1) - A-8 (EAU) VOL+ switch pushed 959.5 to 1060.5 ohms A-10 (AU1) - A-8 (EAU) VOL- switch pushed 3049.5 to 3370.5 ohms NG --> REPLACE STEERING PAD SWITCH ASSEMBLY OK: Go to next step
  2. INSPECT SPIRAL CABLE Disconnect the cable connectors. Measure the resistance of the cable. Standard resistance Tester connection Spiral Cable Position Specified condition K20-4 (EAU) - A-8 (EAU) Center Below 1 ohms 2.5 rotations to the left 2.5 rotations to the right K20-5 (AU2) - A-9 (AU2) Center Below 1 ohms 2.5 rotations to the left 2.5 rotations to the right K20-6 (AU1) - A-10 (AU1) Center Below 1 ohms 2.5 rotations to the left 2.5 rotations to the right NOTE: The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the PRECAUTION for the supplemental restraint system. Refer to «PRECAUTION»(ref-387113-S14173589052011022400000) . NG --> REPLACE SPIRAL CABLE SUB-ASSEMBLY OK: Go to next step
  3. CHECK WIRE HARNESS (SPIRAL CABLE - RADIO RECEIVER) Disconnect the K56 receiver connector. Disconnect the K20 cable connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K56-8 (SW2) - K20-5 (AU2) Below 1 ohms K56-6 (SWG) - K20-4 (EAU) Below 1 ohms K56-7 (SW1) - K20-6 (AU1) Below 1 ohms K56-8 (SW2) - Body ground 10 kohms or higher K56-6 (SWG) - Body ground 10 kohms or higher K56-7 (SW1) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-387171-S39945431822011022400000)

Note. The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the PRECAUTION for the supplemental restraint system. Refer to PRECAUTION .

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  1. CHECK WIRE HARNESS (SPIRAL CABLE - BATTERY) Disconnect the K20 cable connector. Measure the voltage of the wire harness side connector. Standard voltage Tester connection Condition Specified condition K20-12 (IL+2) - Body ground Light control switch TAIL or HEAD 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK STEERING PAD SWITCH ASSEMBLY Disconnect the switch connector. Connect the positive (+) lead of the battery to terminal 5 (IL+2) and the negative (-) lead of the battery to terminal 8 (EAU) of the steering pad switch connector. Check if the illumination for the steering pad switch comes on. OK Illumination for the steering pad switch comes on. NG --> REPLACE STEERING PAD SWITCH ASSEMBLY OK: Go to next step
  3. INSPECT SPIRAL CABLE Disconnect the cable connectors. Measure the resistance of the cable. Standard resistance Tester Connection Spiral Cable Position Specified Condition K20-4 (EAU) - A-8 (EAU) Center Below 1 ohms 2.5 rotations to the left 2.5 rotations to the right K20-12 (IL+2) - A-5 (IL+2) Center Below 1 ohms 2.5 rotations to the left 2.5 rotations to the right NOTE: The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the PRECAUTION for the supplemental restraint system. Refer to «PRECAUTION»(ref-387113-S14173589052011022400000) . NG --> REPLACE SPIRAL CABLE SUB-ASSEMBLY OK: Go to next step
  4. CHECK WIRE HARNESS (RADIO RECEIVER - BATTERY) Disconnect the K54 radio connector. Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition K54-2 (ILL+) - Body ground Light control switch TAIL or HEAD 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK WIRE HARNESS (RADIO RECEIVER - SPIRAL CABLE AND COMBINATION METER) Disconnect the K56 and K54 receiver connectors. Disconnect the K20 cable connector. Disconnect the K31 meter connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K56-6 (SWG) - K20-4 (EAU) Below 1 ohms K54-12 (ILL-) - K31-30 (TR) Below 1 ohms K56-6 (SWG) - Body ground 10 kohms or higher K54-12 (ILL-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK WIRE HARNESS (MULTI-DISPLAY - BATTERY AND COMBINATION METER) Disconnect the K46 display connector. Disconnect the K31 meter connector. Measure the voltage and resistance of the wire harness side connectors. Standard voltage Standard resistance Tester Connection Condition Specified Condition K46-12 (ILL+) - Body ground Light control switch TAIL or HEAD 10 to 14 V Tester Connection Specified Condition K46-11 (ILL-) - K31-30 (TR) Below 1 ohms K46-11 (ILL-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-387171-S39945431822011022400000)

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