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Smart Access System (Keyless Start) (Diagnostic Codes & Symptom Tests): Other Lexus IS II facelift 2

Starter 1 illustration ~12745 words

PROCEDURE

  1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT RELAY (IG2) Remove the IG2 relay from the engine room R/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (When battery voltage is applied to terminals 1 and 2) NG --> See step 10 OK: Go to next step
  5. INSPECT JUNCTION BLOCK RH-IG relay: Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-6 - RA-5 or RD-7 Always 136 to 250 ohms at 20°C (68°F) RD-6 - Body ground Always 10 kohms or higher LH-IG relay: Disconnect the cowl side J/B LH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - LD-8 or LD-9 Always 68 to 250 ohms at 20°C (68°F) LD-13 - Body ground Always 10 kohms or higher NG --> See step 10 OK: Go to next step
  6. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Always 10 kohms or higher J55-35 (IG2D) - Body ground Always 10 kohms or higher NG --> See step 11 OK: Go to next step
  7. CHECK WIRE HARNESS (COWL SIDE J/B LH - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - Body ground Always 10 kohms or higher NG --> See step 11 OK: Go to next step
  8. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Reconnect the J55 ECU and J/B connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  9. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK DTC B2271 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
  10. REPLACE FAULTY RELAY OR J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  11. REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK JUNCTION BLOCK RH-IG relay: Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-6 - RA-5 or RD-7 Always 136 to 250 ohms at 20°C (68°F) RD-6 - RD-12 Always Below 1 ohms RD-6 - Body ground Always 10 kohms or higher LH-IG relay: Disconnect the cowl side J/B LH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - LD-8 or LD-9 Always 68 to 250 ohms at 20°C (68°F) NG --> See step 8 OK: Go to next step
  5. CHECK WIRE HARNESS (COWL SIDE J/B RH - POWER SOURCE CONTROL ECU AND BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition RD-6 - J55-34 (IG1D) Always Below 1 ohms RA-5 or RD-7 - Body ground Always Below 1 ohms RD-6 or J55-34 (IG1D) - Body ground Always 10 kohms or higher Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-12 - LD-13 Always Below 1 ohms RD-12 - Body ground Always 10 kohms or higher LD-8 - Body ground Always Below 1 ohms LD-9 - Body ground Always Below 1 ohms Connect each J/B connector with the power source control ECU connector disconnected. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch on (IG) Below 1 V NG --> See step 9 OK: Go to next step
  6. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  7. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK DTC B2272 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
  8. REPLACE FAULTY RELAY OR J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  9. REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT RELAY (IG2) Remove the IG2 relay from the engine room R/B No. 2. Measure the resistance of the relay. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage is applied to terminals 1 and 2) NG --> See step 8 OK: Go to next step
  5. CHECK WIRE HARNESS (ENGINE ROOM R/B NO. 2 - POWER SOURCE CONTROL ECU) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition Engine room R/B No. 2 IG2 relay terminal 2 - J55-35 (IG2D) Always Below 1 ohms Engine room R/B No. 2 IG2 relay terminal 1 - Body ground Always Below 1 ohms Engine room R/B No. 2 IG2 relay terminal 2 or J55-35 (IG2D) - Body ground Always 10 kohms or higher Install the IG2 relay. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - Body ground Engine switch on (IG) Below 1 V NG --> See step 9 OK: Go to next step
  6. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  7. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK DTC B2273 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
  8. REPLACE FAULTY RELAY OR J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  9. REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK COWL SIDE JUNCTION BLOCK RH (ACC RELAY, PWR OUTLET RELAY) Disconnect the RD and RA J/B connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition RD-2 - RA-5 or RD-7 Always 68 to 250 ohms at 20°C (68°F) NG --> See step 8 OK: Go to next step
  5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - RD-2 Always Below 1 ohms J55-11 (ACCD) - Body ground Always 10 kohms or higher RA-5 - Body ground Always Below 1 ohms RD-7 - Body ground Always Below 1 ohms Connect each J/B connector with the power source control ECU connector disconnected. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch on (IG) Below 1 V NG --> See step 9 OK: Go to next step
  6. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  7. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK DTC B2274 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
  8. REPLACE FAULTY J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  9. REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  1. CHECK FOR DTCS Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . HINT: After all DTCs are cleared, turn the engine switch on (IG). After 25 seconds have elapsed, check if the trouble occurs again. Check for DTCs again. OK DTC B2285 is not output. HINT: If DTC B2285 is output, perform troubleshooting for DTC B2285 first. Refer to «DTC B2285: Steering Lock Position Signal Circuit Malfunction»(ref-606530-S18312930732014032500000) . NG --> GO TO DTC CHART OK: Go to next step
  2. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  3. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM) Disconnect the A5 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-39 (STSW) - A5-19 (STSW) Always Below 1 ohms J55-39 (STSW) or A5-19 (STSW) - Body ground Always 10 kohms or higher Reconnect the A5 ECM connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-39 (STSW) - Body ground Always Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK WIRE HARNESS (STEERING LOCK ECU - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the J29 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J29-1 (GND) - Body ground Always Below 1 ohms J29-4 (SLP1) - J55-26 (SLP) Always Below 1 ohms J29-4 (SLP1) or J55-26 (SLP) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV, 100 ms/DIV Condition Engine switch on (IG) OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  8. INSPECT STEERING LOCK ECU Reconnect the J29 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV, 100 ms/DIV Condition Steering is LOCK / UNLOCK OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE STEERING LOCK ECU OK: Go to next step
  9. INSPECT POWER SOURCE CONTROL ECU Disconnect the A5 ECM connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-39 (STSW) - Body ground Brake pedal depressed, Engine switch off Below 1 V Brake pedal depressed, Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPLACE ECM
  1. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM) Disconnect the A5 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-31 (CTSW) - A5-11 (ACCR) Always Below 1 ohms J55-31 (CTSW) or A5-11 (ACCR) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT ECM Reconnect the A5 ECM connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-31 (CTSW) - Body ground Always 8 to 14 V NG --> REPLACE ECM OK: Go to next step
  5. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Terminal No. (Symbol) Condition Specified condition J55-31 (CTSW) - Body ground Brake pedal depressed, Engine switch on (ST) 0.1 to 0.8 V (*1) HINT: *1: Voltage is output only when the engine is cranking. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
  1. CHECK FOR WATER DAMAGE Check the power source control ECU, peripheral components, and wire harnesses for traces of water. OK There are no traces of water. NG --> TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU
  1. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU -BODY GROUND) Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. INSPECT ENGINE SWITCH Remove the engine switch. Disconnect the switch connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Switch Condition Specified Condition 7 (SS1) - 5 (GND) Pushed Below 1 ohms 2 (SS2) - 5 (GND) Pushed Below 1 ohms 7 (SS1) - 5 (GND) Not pushed 10 kohms or higher 2 (SS2) - 5 (GND) Not pushed 10 kohms or higher HINT: This switch is a momentary type switch. NG --> REPLACE ENGINE SWITCH OK: Go to next step
  4. CHECK WIRE HARNESS (ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J31-7 (SS1) - J55-14 (SSW1) Always Below 1 ohms J31-2 (SS2) - J55-37 (SSW2) Always Below 1 ohms J31-5 (GND) - Body ground Always Below 1 ohms J31-7 (SS1) or J55-14 (SSW1) - Body ground Always 10 kohms or higher J31-2 (SS2) or J55-37 (SSW2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. READ VALUE USING TECHSTREAM (START SWITCH 1 AND 2) Reconnect the connectors. Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DATA LIST for proper functioning of the start switches 1 and 2. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Start Switch1 Start Switch 1/ ON or OFF ON: Engine switch on (IG) OFF: Engine switch OFF - Start Swtich2 Start Switch 2/ ON or OFF ON: Engine switch on (IG) OFF: Engine switch OFF - OK ON (engine switch on (IG)) and OFF (engine switch off) appear on the screen. NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  6. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK DTC B2278 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
  1. CHECK DTC OUTPUT (MULTIPLEX COMMUNICATION SYSTEM) Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for the multiplex network communication system DTCs B1210, B1214 and B1215. HINT: If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first. OK No DTC is output. NG --> GO TO MULTIPLEX COMMUNICATION SYSTEM OK: Go to next step
  2. CHECK DTC OUTPUT (AUTOMATIC TRANSMISSION SYSTEM) Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for the automatic transmission system DTC P0705. OK DTC P0705 is not output. HINT: If DTC P0705 is output, perform troubleshooting for DTC P0705 first (A760H: Refer to «DIAGNOSTIC TROUBLE CODE CHART [08/2012 - ]»(ref-606521-S30718422772014032500000) , A960E: Refer to «DIAGNOSTIC TROUBLE CODE CHART [08/2012 - ]»(ref-606494-S34612463812014032500000) , A760E: Refer to «DIAGNOSTIC TROUBLE CODE CHART [08/2012 - ]»(ref-606522-S34066109352014032500000) ). NG --> GO TO AUTOMATIC TRANSMISSION SYSTEM OK: Go to next step
  3. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT SHIFT LOCK CONTROL ECU Disconnect the shift lock control ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J48-11 (P2) - J48-8 (E) Shift P position Below 1 ohms Shift non-P position 10 kohms or higher NG --> REPLACE SHIFT LOCK CONTROL ECU OK: Go to next step
  6. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - SHIFT LOCK CONTROL ECU) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-5 (P) - J48-11 (P2) Always Below 1 ohms J55-5 (P) or J48-11 (P2) - Body ground Always 10 kohms or higher J48-8 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the engine switch on (IG). BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift P Signal Shift P position/ ON or OFF ON: Shift P position OFF: Shift non-P position - OK ON (shift P position) and OFF (shift non-P position) appear on the screen. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPLACE ECM
  1. CHECK OPERATION OF SPEEDOMETER Drive the vehicle and check if the function of the speedometer in the combination meter is normal. OK Actual vehicle speed and the speed indicated on the speedometer are the same. HINT: The vehicle speed sensor is functioning normally when the indication on the speedometer is normal. NG --> REPLACE COMBINATION METER OK: Go to next step
  2. CHECK DTC OUTPUT (MULTIPLEX NETWORK COMMUNICATION SYSTEM (BEAN)) Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for the multiplex network communication system DTCs B1210, B1214 and B1215. HINT: If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first. Refer to «DIAGNOSTIC TROUBLE CODE CHART [08/2012 - ]»(ref-606505-S08400892662014032500000) . OK No DTC is output. NG --> GO TO MULTIPLEX COMMUNICATION SYSTEM OK: Go to next step
  3. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - COMBINATION METER) Disconnect the J34 meter connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-19 (SPD) - J34-5 (+S) Always Below 1 ohms J55-19 (SPD) or J34-5 (+S) - Body ground Always 10 kohms or higher HINT: If the result of the inspection for a short circuit is not as specified, there may be a short in the ECU. NG --> REPAIR OR REPLACE HARNESS, CONNECTOR OR EACH ECU OK: Go to next step
  6. READ VALUE USING TECHSTREAM (VEHICLE SPEED SIGNAL) Reconnect the connectors. Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DATA LIST for proper functioning of the vehicle speed signal. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Signal Vehicle speed signal/ STOP or RUN STOP: Vehicle is stopped RUN: Vehicle is running - OK STOP (vehicle is stopped) and RUN (vehicle is running) appear on the screen. NG --> REPLACE COMBINATION METER OK: Go to next step
  7. INSPECT POWER SOURCE CONTROL ECU (SPEED SIGNAL) Check the input signal waveform. Reconnect the connectors. Remove the combination meter assembly with connector(s) still connected. Connect the oscilloscope to the terminals J55-19 (SPD) and body ground. Turn the engine switch on (IG). Turn the wheel slowly. Check the signal waveform according to the condition(s) in the table below. Item Condition Tool setting 5 V/DIV., 10 ms./DIV. Vehicle condition Driving at approx. 20 km/h (12 mph) OK The waveform is displayed as shown in the illustration. HINT: As the vehicle speed increases, the cycle of the signal waveform narrows. NG --> REPLACE COMBINATION METER OK --> REPLACE POWER SOURCE CONTROL ECU
  1. CHECK DTC OUTPUT Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTC B2282 and DTC B2283. OK Display (DTC output) Proceed to "DTC B2283" only A "DTC B2283" and "DTC B2282" are output B HINT: If DTC B2282 and DTC B2283 are output, perform troubleshooting for DTC B2282 first. Refer to «DTC B2282: Vehicle Speed Signal Malfunction»(ref-606530-S07677735022014032500000) . B --> GO TO DTC CHART A: Go to next step
  2. CHECK OPERATION OF SPEEDOMETER Drive the vehicle and check if the function of the speedometer in the combination meter is normal. OK Actual vehicle speed and the speed indicated on the speedometer are the same. HINT: The vehicle speed sensor is functioning normally when the indication on the speedometer is normal. NG --> GO TO COMBINATION METER SYSTEM OK --> REPLACE POWER SOURCE CONTROL ECU
  1. CHECK DTC OUTPUT (MULTIPLEX NETWORK COMMUNICATION SYSTEM) Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for the multiplex network communication system DTCs B1210, B1214 and B1215. HINT: If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first. Refer to «DIAGNOSTIC TROUBLE CODE CHART [08/2012 - ]»(ref-606519-S32480039292014032500000) . OK No DTC is output. NG --> GO TO MULTIPLEX COMMUNICATION SYSTEM OK: Go to next step
  2. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for the CAN communication system DTC U0146. HINT: If the DTCs for the CAN communication system malfunction are output, inspect those DTCs first. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2012 - ]»(ref-606524-S11885193892014032500000) . OK No DTC is output. NG --> GO TO CAN COMMUNICATION SYSTEM OK: Go to next step
  3. INSPECT FUSE (STOP SW) Remove the STOP SW fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  4. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK WIRE HARNESS (BATTERY - POWER SOURCE CONTROL ECU) Measure the volage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-1 (STP) - Body ground Brake pedal released Below 1 V J55-1 (STP) - Body ground Brake pedal depressed 10 to 14 V OK --> See step 8 NG: Go to next step
  7. INSPECT STOP LIGHT SWITCH Remove the switch. Measure the resistance of the switch. Standard resistance Tester Connection Condition Specified Condition 1 - 2 Switch pin free Below 1 ohms 3 - 4 Switch pin free 10 kohms or higher 1 - 2 Switch pin pushed in 10 kohms or higher 3 - 4 Switch pin pushed in Below 1 ohms NG --> REPLACE STOP LIGHT SWITCH OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR
  8. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Reconnect the connectors. Check the DATA LIST for proper functioning of the stop light switch. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Stop Light SW Stop light switch 1/ ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - OK ON (brake pedal depressed) and OFF (brake pedal released) appear on the screen. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPLACE ECM
  1. CHECK FOR DTCS Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTC B2785 and DTC B2287. OK DTC B2785 and DTC B2287 are not output. HINT: If DTC B2785 is output. Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN; DTC B2786: No Response from Steering Lock ECU; DTC B2789: No Response from ID BOX»(ref-606525-S20666928932014032500000) . If DTC B2287 is output. Refer to «DTC B2287: LIN Communication Master Malfunction»(ref-606530-S25093362142014032500000) . NG --> GO TO DTC CHART OK: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the J29 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-26 (SLP) - J29-4 (SLP1) Always Below 1 ohms J55-30 (LIN1) - J29-5 (LIN) Always Below 1 ohms J55-26 (SLP) or J29-4 (SLP1) - Body ground Always 10 kohms or higher J55-30 (LIN1) or J29-5 (LIN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Engine switch on (IG) OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  6. INSPECT STEERING LOCK ECU Reconnect the J29 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Steering is LOCK / UNLOCK OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE STEERING LOCK ECU OK --> REPLACE POWER SOURCE CONTROL ECU
  1. CHECK OPERATION OF TACHOMETER Run the engine and check if the function of the tachometer in the combination meter is normal. OK Actual engine revolution speed and the revolution indicated on the tachometer are the same. NG --> GO TO COMBINATION METER SYSTEM OK: Go to next step
  2. CHECK DTC OUTPUT (MULTIPLEX NETWORK COMMUNICATION SYSTEM (BEAN)) Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for the multiplex network communication system DTCs B1210, B1214 and B1215. HINT: If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first. Refer to «DIAGNOSTIC TROUBLE CODE CHART [08/2012 - ]»(ref-606519-S32480039292014032500000) . OK No DTC is output. NG --> GO TO MULTIPLEX COMMUNICATION SYSTEM OK: Go to next step
  3. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for the CAN communication system DTC U0146. HINT: If the DTCs for the CAN communication system malfunction are output, inspect those DTCs first. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [08/2012 - ]»(ref-606524-S11885193892014032500000) . OK No DTC is output. NG --> GO TO CAN COMMUNICATION SYSTEM OK: Go to next step
  4. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM) Disconnect the A6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-2 (TACH) - A6-16 (TACH) Always Below 1 ohms J55-2 (TACH) or A6-16 (TACH) - Body ground Always 10 kohms or higher HINT: If the result of the inspection for a short circuit is not as specified, there may be a short in the ECU. NG --> REPAIR OR REPLACE HARNESS, CONNECTOR OR EACH ECU OK: Go to next step
  7. READ VALUE USING TECHSTREAM Reconnect the connectors. Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DATA LIST for proper functioning of the engine running. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Engine Condition Engine condition/ STOP or RUN STOP: Engine is stopped RUN: Engine is running - OK STOP (engine is stopped) and RUN (engine is running) appear on the screen. NG --> REPLACE ECM OK: Go to next step
  8. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK DTC B2286 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
  1. CHECK FOR DTCS Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTC B2285 and B2785. Result Display (DTC output) Proceed to "DTC B2287" only A "DTC B2287" and "DTC B2785" are output B No DTC is outpu. C HINT: If DTC B2785 is output, perform troubleshooting for DTC B2785 first. Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN; DTC B2786: No Response from Steering Lock ECU; DTC B2789: No Response from ID BOX»(ref-606525-S20666928932014032500000) . B --> GO TO DTC CHART C --> CHECK INTERMITTENT PROBLEMS A: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - CERTIFICATION ECU) Disconnect the J55 ECU connector. Disconnect the P33 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-30 (LIN1) - P33-10 (LIN) Always Below 1 ohms J55-30 (LIN1) or P33-10 (LIN) - Body ground Always 10 kohms or higher OK --> REPLACE POWER SOURCE CONTROL ECU NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR
  1. CHECK FOR DTCS Delete the DTC. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK DTC B2785, DTC B2287 and DTC B2781 are not output. HINT: If DTC B2785 is output. Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN; DTC B2786: No Response from Steering Lock ECU; DTC B2789: No Response from ID BOX»(ref-606525-S20666928932014032500000) . If DTC B2287 is output. Refer to «DTC B2287: LIN Communication Master Malfunction»(ref-606530-S25093362142014032500000) . If DTC B2278 is output. Refer to «DTC B2278: Engine Switch Circuit Malfunction»(ref-606530-S03550995792014032500000) . NG --> GO TO DTC CHART OK: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the J29 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition J55-26 (SLP) - J29-4 (SLP1) Always Below 1 ohms J55-32 (SLR+) - J29-3 (IGE) Always Below 1 ohms J55-30 (LIN1) - J29-5 (LIN) Always Below 1 ohms J29-2 (SGND) - Body ground Always Below 1 ohms J29-1 (GND) - Body ground Always Below 1 ohms J55-26 (SLP) or J29-4 (SLP1) - Body ground Always 10 kohms or higher J55-32 (SLR+) or J29-3 (IGE) - Body ground Always 10 kohms or higher J55-30 (LIN1) or J29-5 (LIN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Engine switch on (IG) OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  6. INSPECT STEERING LOCK ECU Reconnect the J29 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Steering is LOCK / UNLOCK OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE STEERING LOCK ECU OK: Go to next step
  7. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK DTC B2288 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPLACE STEERING LOCK ECU
  1. CHECK FOR DTCS Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK DTC B2287, B2284 and B2285 are not output. HINT: If DTCs B2287, B2284 and B2285 are output, inspect those DTCs first. Refer to «DIAGNOSTIC TROUBLE CODE CHART [08/2012 - ]»(ref-606505-S08400892662014032500000) . If DTCs B2287, B2284 and B2285 are not output, refer to PROBLEM SYMPTOMS TABLE of the smart access system with push-button start (ID code matching inside the cabin cannot be performed). Refer to «PROBLEM SYMPTOMS TABLE [08/2012 - ]»(ref-606526-S11361911422014032500000) . NG --> GO TO DTC CHART OK --> GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (MATCHING FOR THE INSIDE OF THE CABIN CANNOT BE PERFORMED)

Scheme 95

Scheme 95: DESCRIPTION
Scheme 95: DESCRIPTION
  1. ENGINE START SYSTEM OPERATION If the engine switch is pressed with the shift lever in P or N and the brake pedal depressed, the power source control ECU determines that it is an engine start request. The certification ECU and other ECUs perform key verification via the LIN communication line. The power source control ECU activates the ACC relay. The power source control ECU activates the IG1 and IG2 relays. The engine switch indicator light turns green. The certification ECU outputs a steering UNLOCK signal. The signal is sent to the steering lock ECU via the power source control ECU. The power source control ECU sends an engine start request signal to the ECM. The ECM sends an ACC cut request signal to the power source control ECU. The ECM and power source control ECU activate the ST relay. The power source control ECU deactivates the ACC relay until the ECU detects an engine start. When engine revolution speed reaches 200 rpm, the power source control ECU determines that the engine has been started. The ECU reactivates the ACC relay and turns off the engine switch indicator light. Symbols of power source control ECU Signals STP Stop light switch ON signal SSW1/SSW2 Engine switch ON signal ACCD ACC relay operation signal IG2D IG2 relay operation signal STR2 ST relay operation signal STR1 Park/neutral position switch signal TACH Engine start detection signal STSW Starter activation request signal CTSW ACC cut request signal
  1. CHECK IF ENGINE START (INITIALIZE STEERING LOCK) Shift lever is in the P position. Open and close the driver's door with the engine switch off. Check if the engine can be started. OK Engine can be started. HINT: After the battery is discharged and then recharged, the engine may not start unless the steering lock is initialized using the above procedure. OK --> END NG: Go to next step
  2. CHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . Check for DTCs again. OK No DTC is output. NG --> GO TO DTC CHART OK: Go to next step
  3. CHECK SWITCH CONDITION Check the engine start function. When the key is inside the vehicle and the shift lever is in P, check that pressing the engine switch causes the power source mode to change as follows. OK Engine starts. HINT: If power mode does not change to ON (IG and ACC). Refer to «Power Source Mode does not Change to ON (IG and ACC)»(ref-606530-S18245747082014032500000) . If power mode does not change to ON (IG). Refer to «Power Source Mode does not Change to ON (IG)»(ref-606530-S23061434602014032500000) . If power mode does not change to ON (ACC). Refer to «Power Source Mode does not Change to ON (ACC)»(ref-606530-S01993651802014032500000) . NG --> PROCEED TO APPROPRIATE PROBLEM SYMPTOMS SHOWN IN PROBLEM SYMPTOMS TABLE OK: Go to next step
  4. CHECK BASIC FUNCTION Check the engine cranking function. When there is fuel in the fuel tank, the key is inside the vehicle and the shift lever is in P, check that depressing the brake pedal and pressing the engine switch crank the engine. OK Engine cranks. NG --> See step 18 OK: Go to next step
  5. READ VALUE USING TECHSTREAM (STA SIGNAL) Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the result when the engine switch is turned on (IG) and the engine is started. STANDARD: Engine Switch Position ON (IG) ENGINE START STARTED SIG OFF ON OK ON (ENGINE START) and OFF (ENGINE SWITCH ON (IG)) appear on the screen. OK --> See step 12 NG: Go to next step
  6. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DATA LIST for proper functioning of the stop light switch. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Stop Light SW1 Stop light Switch 1/ ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - OK ON (brake pedal depressed) and OFF (brake pedal released) appear on the screen. HINT: If the result of the inspection for a tester display is not as specified, perform troubleshooting for DTC B2284 first. Refer to «DTC B2284: Brake Signal Malfunction»(ref-606530-S38595766402014032500000) . NG --> GO TO DTC CHART OK: Go to next step
  7. READ VALUE USING TECHSTREAM (STEERING LOCK) Connect Techstream to the DLC3. Turn the engine switch on (IG). BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Steering Unlock Switch Steering lock condition/ ON or OFF ON: Steering is unlocked OFF: Steering is locked - OK ON (steering is unlocked) and OFF (steering is locked) appear on the screen. NG --> See step 22 OK: Go to next step
  8. CHECK STEERING LOCK Check if the steering lock is released when turning the engine switch on (ACC). OK The steering lock is released. NG --> GO TO STEERING LOCK SYSTEM OK: Go to next step
  9. INSPECT ECM (STAR AND STSW VOLTAGE) Measure the voltage of the A5 and E4 ECM connectors while cranking the engine. Standard voltage Tester Connection Specified Condition STAR (E4-4) - E1 (E4-7) 9 to 14 V STSW (A5-19) - E1 (E4-7) 9 to 14 V Result Terminal STAR Terminal STSW Proceed to 9 to 14 V 9 to 14 V A 0 V 9 to 14 V B 0 V 0 V C B --> REPLACE ECM C --> See step 16 A: Go to next step
  10. INSPECT RELAY (ST CUT) Remove the ST CUT relay from the engine room J/B and R/B No. 2. Measure the resistance of the ST CUT relay. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage applied to terminals 1 and 2) NG --> REPLACE RELAY OK: Go to next step
  11. INSPECT PARK/NEUTRAL POSITION SWITCH Disconnect the park/neutral position (PNP) switch connector. Measure the resistance between each terminal shown below when the shift lever is moved to each range. Standard resistance Shift Position Tester Connection Specified Condition P 4 - 5 Below 1 ohms N 4 - 5 Below 1 ohms Except N or P 4 - 5 10 kohms or higher NG --> REPLACE PNP SWITCH OK --> CHECK AND REPLACE HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM, ECM - ST CUT RELAY, ST)
  12. INSPECT RELAY (STARTER) Remove the starter relay from the engine room J/B and R/B No. 1. Measure the resistance of the starter relay. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage applied to terminals 1 and 2) NG --> REPLACE RELAY OK: Go to next step
  13. CHECK HARNESS AND CONNECTOR (PNP SWITCH - ST RELAY) Check the harness and the connectors between the park/neutral position switch and the starter relay. Disconnect the E45 switch connector. Remove the starter relay from the engine room J/B and R/B No. 1. Measure the resistance of the wire harness side connectors. Standard resistance (Check for open) Tester Connection Specified Condition Park/Neutral position switch (E45-5) - Starter relay (1) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition Park/Neutral position switch (E45-5) or Starter relay (1) - Body ground 10 kohms or higher Check the harness and the connector between the starter relay and the body ground. Remove the starter relay from the engine room J/B and R/B No. 1. Measure the resistance of the starter relay and the body ground. Standard resistance (Check for open) Tester Connection Specified Condition Starter relay (2) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  14. INSPECT ENGINE ROOM RELAY BLOCK (STARTER RELAY VOLTAGE) Remove the starter relay from the engine room J/B and R/B No. 1. Measure the voltage of the engine room J/B and R/B No. 1 and the body ground. Standard voltage Tester Connection Specified Condition Starter relay (5) - Body ground 9 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  15. INSPECT STARTER ASSEMBLY HINT: Refer to «INSPECTION [08/2012 - ]»(ref-606498-S04178445202014032500000) . NG --> REPAIR OR REPLACE STARTER ASSEMBLY OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY - STARTER, STARTER - BATTERY)
  16. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - ECM) Check the harness and the connectors between the power source control ECU and ECM. Disconnect the power source control ECU connector. Disconnect the A5 ECM connector. Measure the resistance of the wire harness side connectors. Standard resistance (Check for open) Tester Connection Specified Condition J55-39 (STSW) - A5-19 (STSW) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition J55-39 (STSW) or A5-19 (STSW) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  17. CHECK AND REPLACE POWER SOURCE CONTROL ECU Replace the power source control ECU. Check the engine cranking function. When there is fuel in the fuel tank, the key is inside the vehicle and the shift lever is in P, check that depressing the brake pedal and pressing the engine switch crank the engine. OK Engine cranks. HINT: After the power source control ECU is replaced, the engine may not start unless each system is initialized using the above procedure. NG --> REPLACE ECM OK --> END
  18. READ VALUE USING TECHSTREAM (L CODE) Reconnect the connectors. Connect Techstream to the DLC3. Turn the engine switch on (IG). SMART ACCESS: Tester Display Measurement Item/Range Normal Condition Diagnostic Note L Code Check L code check/ ON or NG OK: Normal NG: Malfunction Electrical key in the cabin OK OK is displayed on the screen. HINT: If the result of the inspection for a tester display is not as specified, there may be malfunction of the steering lock ECU or the ID code box. NG --> GO TO ENGINE IMMOBILISER SYSTEM OK: Go to next step
  19. READ VALUE USING TECHSTREAM (ENGINE START REQUEST) Connect Techstream to the DLC3. Turn the engine switch on (IG). SMART ACCESS: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Starter Request Signal Start request signal response/ OK or NG OK: Received NG: Non-received - OK OK (received) and NG (non-received) appear on the screen. NG --> REPLACE CERTIFICATION ECU OK: Go to next step
  20. READ VALUE USING TECHSTREAM (S CODE) Connect Techstream to the DLC3. Turn the engine switch on (IG). SMART ACCESS: Tester Display Measurement Item/Range Normal Condition Diagnostic Note S Code Check S code check/ OK or NG OK: Normal NG: Malfunction - OK OK is displayed on the screen. HINT: If the result of the inspection for a tester display is not as specified, there may be malfunction of the certification ECU or the ID code box. NG --> GO TO ENGINE IMMOBILISER SYSTEM OK: Go to next step
  21. INSPECT ID CODE BOX Check the input signal waveform. Connect the oscilloscope to the terminals J69-6 (EFIO) and A6-6 (IMI). Turn the engine switch on (IG). Check the signal waveform according to the condition(s) in the table below. Item Condition Tool setting 10 V/DIV., 100 ms./DIV. Vehicle condition Engine switch on (IG) NG --> REPLACE ID CODE BOX OK --> END
  22. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Specified Condition J55-26 (SLP) - J29-4 (SLP1) Below 1 ohms J55-26 (SLP) or J29-4 (SLP1) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  23. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Engine switch on (IG) OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
  24. INSPECT STEERING LOCK ECU Reconnect the J29 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Steering is LOCK / UNLOCK OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE STEERING LOCK ECU OK --> REPLACE POWER SOURCE CONTROL ECU
  1. INSPECT ENGINE SWITCH Remove the engine switch. Apply battery voltage between the terminals of the switch, and check the illumination condition of the switch. NOTE: If the positive (+) lead and the negative (-) lead are incorrectly connected, the engine switch indicator does not illuminate. If the voltage is too low, the indicator will not illuminate. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal 11 (SWIL) Battery negative (-) --> Terminal 4 (COM) or 5 (GND) Illuminates Battery positive (+) --> Terminal 12 (INDS) Battery negative (-) --> Terminal 4 (COM) or 5 (GND) Illuminates Battery positive (+) --> Terminal 13 (INDW) Battery negative (-) --> Terminal 4 (COM) or 5 (GND) Illuminates NG --> REPLACE ENGINE SWITCH OK: Go to next step
  2. CHECK WIRE HARNESS (ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the J31 switch connector. Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition J31-11 (SWIL) - J55-36 (SWIL) Always Below 1 ohms J31-12 (INDS) - J55-4 (INDS) Always Below 1 ohms J31-13 (INDW) - J55-13 (INDW) Always Below 1 ohms J31-5 (GND) - Body ground Always Below 1 ohms J31-4 (COM) - Body ground Always Below 1 ohms J31-11 (SWIL) or J55-36 (SWIL) - Body ground Always 10 kohms or higher J31-12 (INDS) or J55-4 (INDS) - Body ground Always 10 kohms or higher J31-13 (INDW) or J55-13 (INDW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU
  1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK FOR DTCS Delete the DTCs. Refer to «DTC CHECK / CLEAR [08/2012 - ]»(ref-606505-S09012254002014032500000) . HINT: After all the DTCs are cleared, check if the trouble occurs again 5 seconds after the engine switch is turned on (IG). Check for DTCs again. OK No DTC is output. NG --> GO TO DTC CHART OK: Go to next step
  5. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DATA LIST for proper functioning of the start switches 1 and 2. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Start Switch1 Start Switch 1/ ON or OFF ON: Engine switch on (IG) OFF: Engine switch OFF - Start Switch2 Start Switch 2/ ON or OFF ON: Engine switch on (IG) OFF: Engine switch OFF - OK ON (engine switch on (IG)) and OFF (engine switch off) appear on the screen. NG --> See step 10 OK: Go to next step
  6. INSPECT RELAY (IG2) Remove the IG2 relay from the engine room R/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (When battery voltage is applied to terminals 1 and 2) NG --> REPLACE RELAY (IG2) OK: Go to next step
  7. INSPECT JUNCTION BLOCK (RH-IG RELAY, LH-IG RELAY, ACC RELAY, PWR POINT RELAY) RH-IG relay: Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-6 - RA-5 or RD-7 Always 136 to 250 ohms at 20°C (68°F) RD-6 - Body ground Always 10 kohms or higher RD-2 - RA-5 or RD-7 Always 68 to 250 ohms at 20°C (68°F) RD-2 - Body ground Always 10 kohms or higher RD-6 - RD-12 Always Below 1 ohms RM-1 - RD-14 When battery voltage is applied to terminals RD-6 and RA-5 or RD-7 Below 1 ohms RM-1 - RD-27 When battery voltage is applied to terminals RD-2 and RA-5 or RD-7 Below 1 ohms RM-1 - RJ-16 When battery voltage is applied to terminals RD-2 and RA-5 or RD-7 Below 1 ohms LH-IG relay: Disconnect the cowl side J/B LH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - LD-8 or LD-9 Always 68 to 250 ohms at 20°C (68°F) LD-13 - Body ground Always 10 kohms or higher LM-1 - LK-6 When battery voltage is applied to terminals LD-13 and LD-8 or LD-9 Below 1 ohms LM-1 - LD-29 When battery voltage is applied to terminals LD-13 and LD-8 or LD-9 Below 1 ohms NG --> REPLACE JUNCTION BLOCK OK: Go to next step
  8. CHECK WIRE HARNESS Inspect the resistance and voltage (Power source control ECU or battery - IG2 relay). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - IG2 relay terminal 2 Always Below 1 ohms IG2 relay terminal 1 - Body ground Always Below 1 ohms J55-35 (IG2D) or IG2 relay terminal 2 - 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 IG2 relay terminal 5 - Body ground Always 10 to 14 V Inspect the resistance and voltage (Power source control ECU or battery - Cowl side J/B RH). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - RD-6 Always Below 1 ohms J55-11 (ACCD) - RD-2 Always Below 1 ohms RD-7 - Body ground Always Below 1 ohms RA-5 - Body ground Always Below 1 ohms J55-34 (IG1D) or RD-6 - Body ground Always 10 kohms or higher J55-11 (ACCD) or RD-2 - 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 RM-1 - Body ground Always 10 to 14 V Inspect the resistance (Cowl side J/B RH - Cowl side J/B LH). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition RD-12 - LD-13 Always Below 1 ohms LD-8 - Body ground Always Below 1 ohms LD-9 - Body ground Always Below 1 ohms Inspect the voltage (Battery - Cowl side J/B LH). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition LM-1 - Body ground Always 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COWL SIDE J/B - EACH SYSTEM)
  10. INSPECT ENGINE SWITCH Remove the engine switch. Measure the resistance of the switch. Standard resistance Tester Connection Switch Condition Specified Condition 7 (SS1) - 5 (GND) Pushed Below 1 ohms 2 (SS2) - 5 (GND) Pushed Below 1 ohms 7 (SS1) - 5 (GND) Not pushed 10 kohms or higher 2 (SS2) - 5 (GND) Not pushed 10 kohms or higher NG --> REPLACE ENGINE SWITCH OK: Go to next step
  11. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU AND BODY GROUND - ENGINE SWITCH) Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J31-7 (SS1) - J55-14 (SSW1) Always Below 1 ohms J31-2 (SS2) - J55-37 (SSW2) Always Below 1 ohms J31-5 (GND) - Body ground Always Below 1 ohms J31-7 (SS1) or J55-14 (SSW1) - Body ground Always 10 kohms or higher J31-2 (SS2) or J55-37 (SSW2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU
  1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT RELAY (IG2 RELAY) Remove the IG2 relay from the engine room R/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (When battery voltage is applied to terminals 1 and 2) NG --> See step 8 OK: Go to next step
  5. INSPECT JUNCTION BLOCK (RH-IG RELAY, LH-IG RELAY) RH-IG relay: Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-6 - RA-5 or RD-7 Always 136 to 250 ohms at 20°C (68°F) RD-6 - RD-12 Always Below 1 ohms RD-6 - Body ground Always 10 kohms or higher RM-1 - RD-14 When battery voltage is applied to terminals RD-6 and RD-12 or RA-5 or RD-7) Below 1 ohms LH-IG relay: Disconnect the cowl side J/B LH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - LD-8 or LD-9 Always 68 to 250 ohms at 20°C (68°F) LD-13 - Body ground Always 10 kohms or higher LM-1 - LK-6 When battery voltage is applied to terminals LD-13 and LD-8 or LD-9) Below 1 ohms LM-1 - LD-29 When battery voltage is applied to terminals LD-13 and LD-8 or LD-9) Below 1 ohms NG --> See step 8 OK: Go to next step
  6. CHECK WIRE HARNESS Inspect the resistance and voltage (Power source control ECU or battery - IG2 relay). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - IG2 relay terminal 2 Always Below 1 ohms IG2 relay terminal 1 - Body ground Always Below 1 ohms J55-35 (IG2D) or IG2 relay terminal 2 - 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 IG2 relay terminal 5 - Body ground Always 10 to 14 V Inspect the resistance and voltage (Power source control ECU or battery - Cowl side J/B RH). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - RD-6 Always Below 1 ohms RD-7 - Body ground Always Below 1 ohms RA-5 - Body ground Always Below 1 ohms J55-34 (IG1D) or RD-6 - Body ground Always 10 kohms or higher Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition RM-1 - Body ground Always 10 to 14 V Inspect the resistance (Cowl side J/B RH - Cowl side J/B LH). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition RD-12 - LD-13 Always Below 1 ohms RD-12 - Body ground Always 10 kohms or higher LD-8 - Body ground Always Below 1 ohms LD-9 - Body ground Always Below 1 ohms Inspect the voltage (Battery - Cowl side J/B LH). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition LM-1 - Body ground Always 10 to 14V NG --> See step 9 OK: Go to next step
  7. INSPECT POWER SOURCE CONTROL ECU Reconnect the connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COWL SIDE J/B - EACH SYSTEM)
  8. REPLACE FAULTY RELAY OR J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  9. REPLACE FAULTY WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
  3. INSPECT WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT COWL SIDE JUNCTION BLOCK RH (ACC RELAY, PWR POINT RELAY) Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-2 - RA-5 or RD-7 Always 68 to 250 ohms at 20°C (68°F) RM-1 - RD-27 When battery voltage is applied to terminals RD-2 and RA-5 or RD-7 Below 1 ohms RM-1 - RJ-16 When battery voltage is applied to terminals RD-2 and RA-5 or RD-7 Below 1 ohms NG --> See step 7 OK: Go to next step
  5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU OR BATTERY - COWL SIDE J/B RH) Measure the resistance of the wire harness side connector. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - RD-2 Always Below 1 ohms J55-11 (ACCD) - Body ground Always 10 kohms or higher RA-5 - Body ground Always Below 1 ohms RD-7 - Body ground Always Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition RM-1 - Body ground Always 10 to 14 V NG --> See step 8 OK: Go to next step
  6. INSPECT POWER SOURCE CONTROL ECU Reconnect the connector. Measure the voltage of the wire harness side connector. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COWL SIDE J/B - EACH SYSTEM)
  7. REPLACE FAULTY J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
  8. REPLACE FAULTY WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

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