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LIN Communication System (Diagnostic Codes & Symptom Tests): Other Lexus LX J200 рестайлинг

Communication Devices ~4803 words

PROCEDURE

  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B1206 is output A DTC B1206 is not output B B --> See step 7 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - MASTER SWITCH) Disconnect the E3 ECU connector. Disconnect the I11 switch connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition E3-10 (LIN2) - I11-17 (LIN1) Always Below 1 ohms E3-10 (LIN2) or I11-17 (LIN1) - Body ground Always 10 kohms or higher Standard Voltage Tester Connection Condition Specified Condition I11-17 (LIN1) - Body ground Always Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK MASTER SWITCH ASSEMBLY (BATTERY VOLTAGE AND BODY GROUND) Disconnect the I11 switch connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition I11-12 (GND) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition I11-11 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE MASTER SWITCH ASSEMBLY Temporarily replace the master switch assembly with a new or normally functioning one. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S22897744442014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  6. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B1206 is not output A DTC B1206 is output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> END (MASTER SWITCH IS DEFECTIVE)
  7. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B1273 is output A DTC B1273 is not output B B --> See step 7 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SLIDING ROOF ECU) Disconnect the E3 and R5 ECU connectors. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition E3-10 (LIN2) - R5-4 (MPX1) Always Below 1 ohms E3-10 (LIN2) or R5-4 (MPX1) - Body ground Always 10 kohms or higher Standard Voltage Tester Connection Condition Specified Condition R5-4 (MPX1) - Body ground Always Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK SLIDING ROOF ECU (BATTERY VOLTAGE AND BODY GROUND) Disconnect the R5 ECU connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition R5-2 (E) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition R5-1 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE SLIDING ROOF ECU Temporarily replace the sliding roof ECU with a new or normally functioning one. Refer to «DISASSEMBLY [01/2012 - ]»(ref-604022-S02897156872014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  6. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B1273 is not output A DTC B1273 is output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> END (SLIDING ROOF ECU IS DEFECTIVE)
  7. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2287 is output A DTC B2287 is not output B B --> See step 6 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - MAIN BODY ECU) Disconnect the E29 and 2D ECU connectors. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition E29-10 (LIN) - 2D-20 (LIN1) Always Below 1 ohms E29-10 (LIN) or 2D-20 (LIN1) - Body ground Always 10 kohms or higher Standard Voltage Tester Connection Condition Specified Condition E29-10 (LIN) or 2D-20 (LIN1) - Body ground Always Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) Temporarily replace the main body ECU (cowl side junction block LH) with a new or normally functioning one. Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  5. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2287 is not output A DTC B2287 is output B B --> See step 7 A --> END (MAIN BODY ECU IS DEFECTIVE)
  6. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  7. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [01/2012 - ]»(ref-603999-S03861866492014031100000)
  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2321 is output A DTC B2321 is not output B B --> See step 7 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT POWER WINDOW REGULATOR MOTOR LH) Disconnect the E3 ECU connector. Disconnect the I12 motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E3-10 (LIN2) - I12-9 (LIN) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (BATTERY VOLTAGE AND BODY GROUND) Disconnect the I12 motor connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition I12-1 (GND) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition I12-2 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Temporarily replace the front power window regulator motor LH with a new or normally functioning one. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S01361844852014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  6. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2321 is not output A DTC B2321 is output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> END (FRONT POWER WINDOW REGULATOR MOTOR LH IS DEFECTIVE)
  7. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2322 is output A DTC B2322 is not output B B --> See step 7 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT POWER WINDOW REGULATOR MOTOR RH) Disconnect the E3 ECU connector. Disconnect the I4 motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E3-10 (LIN2) - I4-9 (LIN) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (BATTERY VOLTAGE AND BODY GROUND) Disconnect the I4 motor connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition I4-1 (GND) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition I4-2 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Temporarily replace the front power window regulator motor assembly RH with a new or normally functioning one. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S01361844852014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  6. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2322 is not output A DTC B2322 is output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> END (FRONT POWER WINDOW REGULATOR MOTOR RH IS DEFECTIVE)
  7. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2323 is output A DTC B2323 is not output B B --> See step 7 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR POWER WINDOW REGULATOR MOTOR RH) Disconnect the E3 ECU connector. Disconnect the J4 motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E3-10 (LIN2) - J4-9 (LIN) Always Below 1 ohms E3-10 (LIN2) or J4-9 (LIN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (BATTERY VOLTAGE AND BODY GROUND) Disconnect the J4 motor connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition J4-1 (GND) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition J4-2 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Temporarily replace the rear power window regulator motor RH with a new or normally functioning one. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S32830118182014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  6. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2323 is not output A DTC B2323 is output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> END (REAR POWER WINDOW REGULATOR MOTOR RH IS DEFECTIVE)
  7. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2324 is output A DTC B2324 is not output B B --> See step 7 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR POWER WINDOW REGULATOR MOTOR LH) Disconnect the E3 ECU connector. Disconnect the J11 motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E3-10 (LIN2) - J11-9 (LIN) Always Below 1 ohms E3-10 (LIN2) or J11-9 (LIN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (BATTERY VOLTAGE AND BODY GROUND) Disconnect the J11 motor connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition J11-1 (GND) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition J11-2 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Temporarily replace the rear power window regulator motor LH with a new or normally functioning one. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S32830118182014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  6. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2324 is not output A DTC B2324 is output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> END (REAR POWER WINDOW REGULATOR MOTOR LH IS DEFECTIVE)
  7. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2325 is output A DTC B2325 is not output B B --> See step 16 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - MASTER SWITCH) Disconnect the E3 and R5 ECU connectors. Disconnect the I4, I12, J4 and J11 motor connectors. Disconnect the I11 switch connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition E3-10 (LIN2) - I11-17 (LIN1) Always Below 1 ohms E3-10 (LIN2) - Body ground Always 10 kohms or higher Standard Voltage Tester Connection Condition Specified Condition E3-10 (LIN2) - Body ground Always Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CLEAR DTC Reconnect the E3 and R5 ECU connectors. Disconnect the I11 switch connector. Reconnect I4, I12, J4 and J11 motor connectors. Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  5. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2325 is output A DTC B2325 is not output B B --> See step 17 A: Go to next step
  6. CLEAR DTC Reconnect the I11 switch connector. Disconnect the I12 motor connector. Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  7. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2325 is output A DTC B2325 is not output B B --> See step 18 A: Go to next step
  8. CLEAR DTC Reconnect the I12 motor connector. Disconnect the I4 motor connector. Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  9. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2325 is output A DTC B2325 is not output B B --> See step 19 A: Go to next step
  10. CLEAR DTC Reconnect the I4 motor connector. Disconnect the J4 motor connector. Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  11. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2325 is output A DTC B2325 is not output B B --> See step 20 A: Go to next step
  12. CLEAR DTC Reconnect the J4 motor connector. Disconnect the J11 motor connector. Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  13. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2325 is output A DTC B2325 is not output B B --> See step 21 A: Go to next step
  14. CLEAR DTC Reconnect the J11 motor connector. Disconnect the R5 ECU connector. Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  15. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2325 is output A DTC B2325 is not output B B --> See step 22 A --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  16. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  17. REPLACE MASTER SWITCH ASSEMBLY. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S22897744442014031100000)
  18. REPLACE FRONT POWER WINDOW REGULATOR MOTOR LH. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S01361844852014031100000)
  19. REPLACE FRONT POWER WINDOW REGULATOR MOTOR RH. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S01361844852014031100000)
  20. REPLACE REAR POWER WINDOW REGULATOR MOTOR RH. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S32830118182014031100000)
  21. REPLACE REAR POWER WINDOW REGULATOR MOTOR LH. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S32830118182014031100000)
  22. REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY. Refer to «REMOVAL [01/2012 - ]»(ref-604021-S32830118182014031100000)
  1. CHECK HARNESS AND CONNECTOR (NO. 2 MAIN BODY ECU - OVERHEAD JUNCTION BLOCK) Disconnect the L33 ECU connector. Disconnect the R12 junction block connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition L33-10 (MPX) - R12-2 (LIN) Always Below 1 ohms L33-10 (MPX) - Body ground Always 10 kohms or higher Standard Voltage Tester Connection Condition Specified Condition L33-10 (MPX) - Body ground Always Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK OVERHEAD JUNCTION BLOCK (BATTERY VOLTAGE AND GROUND) Disconnect the R7 junction block connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition R7-16 (GND9) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition R7-6 (+B2) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK OVERHEAD JUNCTION BLOCK Temporarily replace the overhead junction block with a new or normally functioning one. Refer to «REMOVAL [01/2012 - ]»(ref-603940-S32640876042014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  4. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2405 is not output A DTC B2405 is output B B --> See step 5 A --> END (OVERHEAD JUNCTION BLOCK IS DEFECTIVE)
  5. REPLACE NO. 2 MAIN BODY ECU. Refer to «REMOVAL [01/2012 - ]»(ref-604002-S15106462752014031100000)
  1. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - MAIN BODY ECU) Disconnect the 2D and E29 ECU connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E29-10 (LIN) - 2D-20 (LIN1) Always Below 1 ohms E29-10 (LIN) - Body ground Always 10 kohms or higher Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E29-10 (LIN) - Body ground Always Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . Reconnect the E29 ECU connector. Recheck for DTCs. RESULT Result Proceed to DTC B2785 is output A DTC B2785 is not output B B --> See step 5 A: Go to next step
  3. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . Reconnect the 2D ECU connector. Disconnect the E26 ECU connector. Recheck for DTCs. RESULT Result Proceed to DTC B2785 is output A DTC B2785 is not output B B --> See step 7 A: Go to next step
  4. CHECK FOR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . Reconnect the E26 ECU connector. Disconnect the E28 box connector. Recheck for DTCs. RESULT Result Proceed to DTC B2785 is output A DTC B2785 is not output B B --> See step 9 A --> See step 11
  5. REPLACE MAIN BODY ECU (COWL PANEL JUNCTION BLOCK LH) Temporarily replace the main body ECU (cowl side junction block LH) with a new or normally functioning one. Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  6. CHECK FOR DTC Recheck for DTCs. RESULT Result Proceed to DTC B2785 is not output A DTC B2785 is output B B --> See step 11 A --> END (MAIN BODY ECU IS DEFECTIVE)
  7. REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Temporarily replace the steering lock ECU with a new or normally functioning one. Refer to «DISASSEMBLY [01/2012 - ]»(ref-603959-S27388203652014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  8. CHECK FOR DTC Recheck for DTCs. RESULT Result Proceed to DTC B2785 is not output A DTC B2785 is output B B --> See step 11 A --> END (STEERING LOCK ECU IS DEFECTIVE)
  9. REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) Temporarily replace the ID code box (immobilizer code ECU) with a new or normally functioning one. Refer to «REMOVAL [01/2012 - ]»(ref-603999-S18312758162014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  10. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2785 is not output A DTC B2785 is output B B --> See step 11 A --> END (ID CODE BOX IS DEFECTIVE)
  11. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [01/2012 - ]»(ref-603999-S03861866492014031100000)
  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2786 is output A DTC B2786 is not output B B --> See step 7 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - STEERING LOCK ECU) Disconnect the E29 and E26 ECU connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E29-10 (LIN) - E26-5 (LIN) Always Below 1 ohms E29-10 (LIN) or E26-5 (LIN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK STEERING LOCK ACTUATOR (BATTERY VOLTAGE AND BODY GROUND) Disconnect the E26 ECU connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition E26-1 (GND) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition E26-7 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE STEERING LOCK ACTUATOR ASSEMBLY Temporarily replace the steering lock actuator with a new or normally functioning one. Refer to «DISASSEMBLY [01/2012 - ]»(ref-603959-S27388203652014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  6. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2786 is not output A DTC B2786 is output B B --> See step 8 A --> END (STEERING LOCK ECU IS DEFECTIVE)
  7. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  8. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [01/2012 - ]»(ref-603999-S03861866492014031100000)
  1. CLEAR DTC Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  2. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2789 is output A DTC B2789 is not output B B --> See step 7 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ID CODE BOX) Disconnect the E29 ECU connector. Disconnect the E28 box connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E29-10 (LIN) - E28-3 (LIN1) Always Below 1 ohms E29-10 (LIN) or E28-3 (LIN1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (ID CODE BOX - BATTERY AND BODY GROUND) Disconnect the E28 box connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition E28-8 (GND) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition E28-1 (+B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) Temporarily replace the ID code box (immobilizer code ECU) with a new or normally functioning one. Refer to «REMOVAL [01/2012 - ]»(ref-603999-S18312758162014031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . NEXT: Go to next step
  6. CHECK FOR DTC Recheck for DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603984-S16783571822014031100000) . RESULT Result Proceed to DTC B2789 is output A DTC B2789 is not output B B --> See step 8 A --> END (ID CODE BOX IS DEFECTIVE)
  7. USE SIMULATION METHOD TO CHECK. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE [01/2012 - ]»(ref-603789-S26835722402014031100000)
  8. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [01/2012 - ]»(ref-603999-S03861866492014031100000)
  1. CHECK HARNESS AND CONNECTOR (RAIN SENSOR - WINDSHIELD WIPER ECU AND OVERHEAD JUNCTION BLOCK) Disconnect the E90 ECU connector. Disconnect the R11 sensor connector. Disconnect the R7 and R12 junction block connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition R11-3 (MPX) - E90-7 (MPX1) Always Below 1 ohms R11-4 (SIG) - R7-8 (IG2) Always Below 1 ohms R11-1 (ES) - R12-19 (GND2) Always Below 1 ohms R11-3 (MPX) - Body ground Always 10 kohms or higher R11-4 (SIG) - Body ground Always 10 kohms or higher R11-1 (ES) - Body ground Always 10 kohms or higher Reconnect the R7 and R12 junction block connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition R11-4 (SIG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. REPLACE RAIN SENSOR Temporarily replace the rain sensor with a new one. Refer to «REMOVAL [01/2012 - ]»(ref-603941-S15395965092014031100000) . Check the rain sensor function is normal. OK Rain sensor function is normal NG --> See step 3 OK --> END (RAIN SENSOR IS DEFECTIVE)
  3. REPLACE WINDSHIELD WIPER ECU. Refer to «REMOVAL [01/2012 - ]»(ref-603941-S21401607062014031100000)
  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - REAR AIR CONDITIONING CONTROL PANEL) Disconnect the E36 amplifier connector. Disconnect the E55 panel connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition E36-21 (RLIN) - E55-4 (RLIN) Always Below 1 ohms E36-21 (RLIN) - Body ground Always 10 kohms or higher Standard Voltage Tester Connection Condition Specified Condition E36-21 (RLIN) - Body ground Always Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK REAR AIR CONDITIONING CONTROL PANEL (BATTERY VOLTAGE AND BODY GROUND) Disconnect the E55 panel connector. Measure the resistance and voltage according to the value(s) in the tables below. Standard Resistance Tester Connection Condition Specified Condition E55-1 (E) - Body ground Always Below 1 ohms Standard Voltage Tester Connection Condition Specified Condition E55-6 (IG) - Body ground Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK REAR AIR CONDITIONING CONTROL PANEL Temporarily replace the rear air conditioning control panel with a new or normally functioning one. Refer to «REMOVAL [01/2012 - ]»(ref-603919-S42675436862014031100000) . Check that the rear air conditioning function is normal. OK Rear air conditioning function is normal. NG --> See step 4 OK --> END (REAR AIR CONDITIONING CONTROL PANEL IS DEFECTIVE)
  4. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL [01/2012 - ]»(ref-603919-S36487855842014031100000)

More articles — LIN Communication System (Diagnostic Codes & Symptom Tests)