Home ReviewsRefund
Home/Lexus/LX/Lexus LX J200 рестайлинг (2012-2015)/Repair manual/Starter/Smart Access System (Keyless Start) (Diagnostic Codes & Cir…
Contents Section: Starter All sections

Smart Access System (Keyless Start) (Diagnostic Codes & Circuit Tests): Other Lexus LX J200 рестайлинг

Starter 3 illustrations ~7068 words

PROCEDURE

  1. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Check whether DTC B2271 is output. RESULT Result Proceed to DTC B2271 output A No DTC output B B --> See step 4 A: Go to next step
  2. INSPECT FUSE (AM2) Remove the AM2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AM2 fuse Always Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND) Disconnect the E1, E2 and 2D main body ECU connectors. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E1-6 (AM1) - Body ground Always 11 to 14 V E2-1 (AM2) - Body ground Always 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition 2D-62 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603789-S02048416482014031100000)
  1. READ VALUE USING TECHSTREAM (IG1 RELAY MONITOR (OUTSIDE)) Use the Data List to check if the IG1 No. 3 relay is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note IG1 Relay Monitor(Outside) IG1 No. 3 relay outer relay monitor/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - OK When the engine switch is turned on (IG), ON is displayed on the Techstream. NG --> See step 3 OK: Go to next step
  2. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Turn the engine switch on (IG), wait at least 10 seconds, and check whether DTC B2272 is output. RESULT Result Proceed to No DTC output A DTC B2272 output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> See step 4
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND) Disconnect the E1, 2A and 2D main body ECU connectors. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 2A-1 - Body ground Always 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition E1-3 (IG1D) - 2D-43 Always Below 1 ohms 2D-62 (GND2) - Body ground Always Below 1 ohms E1-3 (IG1D) or 2D-43 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603789-S02048416482014031100000)
  1. READ VALUE USING TECHSTREAM (IG2 RELAY MONITOR (INSIDE)) Use the Data List to check if the integration relay (IG2 relay) is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note IG2 Relay Monitor(Inside) Integration relay (IG2 relay) inner relay monitor/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - OK When the engine switch is turned on (IG), ON is displayed on the Techstream. NG --> See step 3 OK: Go to next step
  2. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Turn the engine switch on (IG), wait at least 10 seconds, and check whether DTC B2273 is output. RESULT Result Proceed to No DTC output A DTC B2273 output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> See step 6
  3. INSPECT FUSE (IG2 MAIN) Remove the IG2 MAIN fuse from the integration relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition IG2 MAIN fuse Always Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  4. INSPECT INTEGRATION NO. 1 RELAY (IG2 RELAY) Install the IG2 MAIN fuse to the integration relay. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1B-8 - 1C-1 Battery voltage applied to terminals 1B-6 and 1B-7 Below 1 ohms 1B-8 - 1C-1 Battery voltage not applied to terminals 1B-6 and 1B-7 10 kohms or higher NG --> REPLACE INTEGRATION NO. 1 RELAY OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - MAIN BODY ECU AND BODY GROUND) Disconnect the E2 main body ECU connector. Disconnect the 1B integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E2-11 (IG2D) - 1B-6 Always Below 1 ohms 1B-7 - Body ground Always Below 1 ohms E2-11 (IG2D) or 1B-6 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  6. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603789-S02048416482014031100000)
  1. READ VALUE USING TECHSTREAM (ACC RELAY MONITOR) Use the Data List to check if the ACC relay is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note ACC Relay Monitor ACC relay monitor/ON or OFF ON: Engine switch on (ACC) OFF: Engine switch off - OK When the engine switch is turned on (IG), ON is displayed on the Techstream. NG --> See step 3 OK: Go to next step
  2. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Turn the engine switch on (IG), wait at least 10 seconds, and check whether DTC B2274 is output. RESULT Result Proceed to No DTC output A DTC B2274 output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> See step 4
  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND) Disconnect the E1, 2A and 2D main body ECU connectors. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 2A-1 - Body ground Always 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition E1-22 (ACCD) - 2D-45 Always Below 1 ohms 2D-62 (GND2) - Body ground Always Below 1 ohms E1-22 (ACCD) or 2D-45 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603789-S02048416482014031100000)
  1. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Depress the brake pedal with the engine switch on (IG), wait at least 15 seconds, and check whether DTC B2275 is output. RESULT Result Proceed to DTC B2275 output A No DTC output B B --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM) Disconnect the E4 main body ECU connector. Disconnect the A38 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E4-4 (STSW) - A38-14 (STSW) Always Below 1 ohms E4-4 (STSW) or A38-14 (STSW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. INSPECT MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) Measure the voltage according to the value(s) in the table below. HINT: The voltage is generated at terminal STSW for 0.3 seconds when the engine cranks. Standard Voltage Tester Connection Condition Specified Condition E4-4 (STSW) - Body ground Brake pedal depressed with shift lever in P, engine switch pushed once 11 to 14 V NG --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) OK --> See step 4
  4. REPLACE ECM. Refer to «REMOVAL [01/2012 - ]»(ref-603905-S14917592232014031100000)
  5. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603789-S02048416482014031100000)
  1. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Check whether DTC B2276 is output 50 seconds or more after the engine switch is turned on (IG). RESULT Result Proceed to DTC B2276 output A No DTC output B B --> See step 4 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM) Disconnect the E2 main body ECU connector. Disconnect the A38 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E2-3 (ACCR) - A38-41 (ACCR) Always Below 1 ohms E2-3 (ACCR) or A38-41 (ACCR) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. INSPECT MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E2-3 (ACCR) - Body ground Engine switch pressed and engine cranking 11 to 14 V NG --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) OK --> See step 5
  4. USE SIMULATION METHOD TO CHECK (SYSTEM IS OK). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603789-S02048416482014031100000)
  5. REPLACE ECM. Refer to «REMOVAL [01/2012 - ]»(ref-603905-S14917592232014031100000)
  1. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Check whether DTC B2277 is output 30 seconds or more after the engine switch is turned on (IG). OK No DTC is output. NG --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) OK --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603789-S02048416482014031100000)
  1. READ VALUE USING TECHSTREAM (START SWITCH 1, 2) Use the Data List to check if the engine switch is functioning properly. MAIN 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 When the engine switch is turned on (IG), ON is displayed on the Techstream. NG --> See step 3 OK: Go to next step
  2. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Turn the engine switch on (IG), and check whether DTC B2278 is output. RESULT Result Proceed to No DTC output A DTC B2278 output B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A --> See step 6
  3. INSPECT ENGINE SWITCH Disconnect the E18 engine switch connector. Measure the resistance according to the value(s) in the table below. 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 --> See step 5 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - MAIN BODY ECU AND BODY GROUND) Disconnect the E1 main body ECU connector. Disconnect the E18 engine switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E1-17 (SSW1) - E18-7 (SS1) Always Below 1 ohms E1-16 (SSW2) - E18-2 (SS2) Always Below 1 ohms E18-5 (GND) - Body ground Always Below 1 ohms E1-17 (SSW1) or E18-7 (SS1) - Body ground Always 10 kohms or higher E1-16 (SSW2) or E18-2 (SS2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  5. REPLACE ENGINE SWITCH. Refer to «REMOVAL [01/2012 - ]»(ref-603926-S38812775902014031100000)
  6. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603789-S02048416482014031100000)
  1. READ VALUE USING TECHSTREAM (SHIFT P SIGNAL) Use the Data List to check if the shift position signal is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift P Signal Shift P position signal/ON or OFF ON: Shift lever in P OFF: Shift lever not in P - RESULT Result Proceed to Display on the Techstream does not change according to shift lever operation A Display on the Techstream changes according to shift lever operation B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A: Go to next step
  2. INSPECT SHIFT LOCK CONTROL ECU SUB-ASSEMBLY Disconnect the E51 shift lock control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 11 (P2) - 3 (E) Shift lever not in P Below 1 ohms 11 (P2) - 3 (E) Shift lever in P 10 kohms or higher NG --> See step 4 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL ECU - MAIN BODY ECU AND BODY GROUND) Disconnect the E4 main body ECU connector. Disconnect the E51 shift lock control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E4-2 (P) - E51-11 (P2) Always Below 1 ohms E51-3 (E) - Body ground Always Below 1 ohms E4-2 (P) or E51-11 (P2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  4. REPLACE SHIFT LOCK CONTROL ECU SUB-ASSEMBLY. Refer to «DISASSEMBLY [01/2012 - ] - Step 11»(ref-603912-S35980120212014031100000)
  1. READ VALUE USING TECHSTREAM (VEHICLE SPEED SIGNAL) Use the Data List to check if the vehicle speed signal is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Signal Vehicle speed signal/Stop or Run Stop: Vehicle stopped Run: Vehicle running - RESULT Result Proceed to Display on the Techstream does not change according to vehicle condition A Display on the Techstream changes according to vehicle condition B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - COMBINATION METER) Disconnect the E3 main body ECU connector. Disconnect the E77 combination meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E3-9 (SPD) - E77-6 (+S) Always Below 1 ohms E3-9 (SPD) or E77-6 (+S) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) Temporarily replace the main body ECU with a new or normally functioning one. Check whether DTC B2282 and B2283 are output. OK No DTC is output. NG --> See step 4 OK --> END
  4. REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL [01/2012 - ]»(ref-603937-S05977037212014031100000)
  1. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Use the Data List to check if the stop light switch is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Stop Light SW Stop light switch/ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - RESULT Result Proceed to Display on the Techstream does not change according to brake pedal operation A Display on the Techstream changes according to brake pedal operation B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A: Go to next step
  2. INSPECT FUSE (STOP) Remove the STOP fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition STOP fuse Always Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  3. INSPECT STOP LIGHT SWITCH ASSEMBLY Disconnect the A30 stop light switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - 2 Stop light switch pin not pushed Below 1 ohms 3 - 4 Stop light switch pin pushed Below 1 ohms 1 - 2 Stop light switch pin pushed 10 kohms or higher 3 - 4 Stop light switch pin not pushed 10 kohms or higher NG --> See step 5 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - BATTERY AND MAIN BODY ECU) Disconnect the 2B main body ECU connector. Disconnect the A30 stop light switch connector. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A30-2 - Body ground Always 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition 2B-22 (STP) - A30-1 Always Below 1 ohms 2B-22 (STP) or A30-1 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  5. REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL [01/2012 - ]»(ref-603938-S17790853752014031100000)
  1. READ VALUE USING TECHSTREAM (STEERING UNLOCK SWITCH) Use the Data List to check if the steering lock is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Steering Unlock Switch Steering lock condition/ON or OFF ON: Steering unlocked OFF: Steering locked - RESULT Result Proceed to Display on the Techstream does not change according to steering lock position A Display on the Techstream changes according to steering lock position B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - STEERING LOCK ECU) Disconnect the E1 main body ECU connector. Disconnect the E26 steering lock ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E1-18 (SLP) - E26-4 (SLP1) Always Below 1 ohms E1-18 (SLP) or E26-4 (SLP1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) Temporarily replace the main body ECU with a new or normally functioning one. Check whether DTC B2285 and B2288 are output. OK No DTC is output. NG --> See step 4 OK --> END
  4. REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY). Refer to «DISASSEMBLY [01/2012 - ]»(ref-603959-S27388203652014031100000)
  1. READ VALUE USING TECHSTREAM (ENGINE CONDITION) Use the Data List to check if the engine start is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Engine Condition Engine condition/Stop or Run Stop: Engine stopped Run: Engine running - RESULT Result Proceed to Display on the Techstream does not change according to engine condition A Display on the Techstream changes according to engine condition B B --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM) Disconnect the E3 main body ECU connector. Disconnect the A38 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E3-8 (TACH) - A38-15 (TACH) Always Below 1 ohms E3-8 (TACH) or A38-15 (TACH) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) Temporarily replace the main body ECU with a new or normally functioning one. Check whether DTC B2286 is output. OK No DTC is output. NG --> See step 4 OK --> END
  4. REPLACE ECM. Refer to «REMOVAL [01/2012 - ]»(ref-603905-S14917592232014031100000)
  1. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Check whether DTC B2289 is output. RESULT Result Proceed to DTC B2289 output A No DTC output B B --> See step 4 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Disconnect the 2D main body ECU connector. Disconnect the E29 certification ECU (smart key ECU assembly) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2D-20 (LIN1) - E29-10 (LIN) Always Below 1 ohms 2D-20 (LIN1) or E29-10 (LIN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) Temporarily replace the main body ECU with a new or normally functioning one. Check whether DTC B2289 is output. OK No DTC is output. NG --> See step 5 OK --> END
  4. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603789-S02048416482014031100000)
  5. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL [01/2012 - ]»(ref-603999-S03861866492014031100000)
  1. CHECK DTC OUTPUT Check whether DTC is output. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . RESULT Display (DTC output) Proceed to No DTC output A DTC output B B --> See step 15 A: Go to next step
  2. CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START Remove the battery of the electrical key transmitter. Refer to «REPLACEMENT [01/2012 - ]»(ref-604012-S36906729902014031100000) . With the brake pedal depressed, touch the LEXUS mark of the key to the engine switch. When operating the engine switch, check whether the engine switch changes to on (ACC) or on (IG). HINT: When the electrical key transmitter cannot be verified even when it is in the operational area, the engine start check can be performed by removing the transmitter battery from the electrical key transmitter and holding the transmitter against the engine switch. When performing the check, if the engine switch turns on (ACC) or on (IG), there is a problem with key certification inside the cabin. RESULT Result Proceed to Does not change to on (ACC) A Does not change to on (IG) B Does not change to on (ACC) and on (IG) C Changes to on (ACC) and on (IG) D B --> See step 5 C --> See step 11 D --> See step 17 A: Go to next step
  3. INSPECT FUSE (AM2) Remove the AM2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AM2 fuse Always Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND) Disconnect the E1, E2, 2A and 2D main body ECU connectors. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E1-6 (AM1) - Body ground Always 11 to 14 V E2-1 (AM2) - Body ground Always 11 to 14 V 2A-1 - Body ground Always 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition E1-22 (ACCD) - 2D-45 Always Below 1 ohms 2D-62 (GND2) - Body ground Always Below 1 ohms E1-22 (ACCD) or 2D-45 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  5. INSPECT FUSE (AM2) Remove the AM2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AM2 fuse Always Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND) Disconnect the E1, E2, 2A and 2D main body ECU connectors. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E1-6 (AM1) - Body ground Always 11 to 14 V E2-1 (AM2) - Body ground Always 11 to 14 V 2A-1 - Body ground Always 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition E1-3 (IG1D) - 2D-43 Always Below 1 ohms 2D-62 (GND2) - Body ground Always Below 1 ohms E1-3 (IG1D) or 2D-43 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. INSPECT INTEGRATION NO. 1 RELAY (IG2 RELAY) Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1B-8 - 1C-1 Battery voltage applied to terminals 1B-6 and 1B-7 Below 1 ohms 1B-8 - 1C-1 Battery voltage not applied to terminals 1B-6 and 1B-7 10 kohms or higher NG --> REPLACE INTEGRATION NO. 1 RELAY OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - MAIN BODY ECU AND BODY GROUND) Disconnect the E2 main body ECU connector. Disconnect the 1B integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E2-11 (IG2D) - 1B-6 Always Below 1 ohms 1B-7 - Body ground Always Below 1 ohms E2-11 (IG2D) or 1B-6 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. INSPECT FUSE (IGN, IG2 MAIN) Remove the IGN and IG2 MAIN fuses from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition IGN fuse Always Below 1 ohms IG2 MAIN fuse Always Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  10. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - STEERING LOCK ECU AND BATTERY) Disconnect the E26 steering lock ECU connector. Disconnect the 1B and 1C integration relay connectors. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 1C-1 - Body ground Always 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition E26-6 (IG2) - 1B-8 Always Below 1 ohms E26-6 (IG2) or 1B-8 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  11. INSPECT FUSE (AM2) Remove the AM2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition AM2 fuse Always Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  12. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND) Disconnect the E1, E2 and 2D main body ECU connectors. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E1-6 (AM1) - Body ground Always 11 to 14 V E2-1 (AM2) - Body ground Always 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition 2D-62 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  13. INSPECT ENGINE SWITCH Disconnect the E18 engine switch connector. Measure the resistance according to the value(s) in the table below. 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 --> See step 16 OK: Go to next step
  14. CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - MAIN BODY ECU AND BODY GROUND) Disconnect the E1 main body ECU connector. Disconnect the E18 engine switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E1-17 (SSW1) - E18-7 (SS1) Always Below 1 ohms E1-16 (SSW2) - E18-2 (SS2) Always Below 1 ohms E18-5 (GND) - Body ground Always Below 1 ohms E1-17 (SSW1) or E18-7 (SS1) - Body ground Always 10 kohms or higher E1-16 (SSW2) or E18-2 (SS2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  15. GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR START FUNCTION) (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART [01/2012 - ]»(ref-603981-S11545439812014031100000)
  16. REPLACE ENGINE SWITCH. Refer to «REMOVAL [01/2012 - ]»(ref-603926-S38812775902014031100000)
  17. GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR ENTRY FUNCTION) (ROOM OSCILLATOR DOES NOT RECOGNIZE KEY). Refer to «Room Oscillator does not Recognize Key»(ref-603998-S24092461062014031100000)

Scheme 69

Scheme 69: DESCRIPTION
Scheme 69: DESCRIPTION
  1. ENGINE START SYSTEM OPERATION When the engine switch is pressed with the brake pedal depressed and the shift lever in P, the main body ECU determines that it is an engine start request. The certification ECU (smart key ECU assembly) and other ECUs perform key verification via the LIN communication line. The engine switch indicator light illuminates in green. The main body ECU activates the IG1 No. 3 relay, ACC relay and integration relay (IG2 relay). The certification ECU (smart key ECU assembly) outputs a steering unlock signal. The signal is sent to the steering lock ECU via the LIN communication line. The main body ECU sends an engine start request signal to the ECM. The main body ECU deactivates the ACC relay until the ECU detects an engine start. The ECU reactivates the ACC relay and turns off the engine switch indicator light. Symbols of Main Body ECU Signals SSW1/SSW2 Engine switch on (ACC), on (IG) signal IG1D IG1 No. 3 relay operation signal ACCD ACC relay operation signal IG2D Integration relay (IG2 relay) operation signal STP Stop light switch signal P Shift lock signal TACH Engine start detection signal STSW Starter activation request signal ACCR ACC cut request signal

Scheme 70

Scheme 70: WIRING DIAGRAM
Scheme 70: WIRING DIAGRAM

Scheme 71

Scheme 71
Scheme 71
  1. CHECK ENGINE SWITCH (SWITCH CONDITION) Check the power source mode change. 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 off --> on (ACC) --> on (IG) --> off NG --> See step 25 OK: Go to next step
  2. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR [01/2012 - ]»(ref-603981-S12068300592014031100000) . Check whether the trouble recurs 5 seconds after the engine switch is turned on (IG). Check whether DTCs for the main body ECU or certification ECU (smart key ECU assembly) are output. RESULT Result Proceed to No DTC output A DTC for main body ECU output Smart access system with push-button start (for start function) B DTC for certification ECU (Smart key ECU assembly) output Steering lock system C DTC for certification ECU (Smart key ECU assembly) output Engine immobilizer system D B --> See step 24 C --> See step 31 D --> See step 32 A: Go to next step
  3. CHECK CRANKING 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 cranks the engine. OK Engine cranks. NG --> See step 8 OK: Go to next step
  4. READ VALUE USING TECHSTREAM (L CODE) Use the Data List to check if L code certification is functioning properly. SMART ACCESS Tester Display Measurement Item/Range Normal Condition Diagnostic Note L Code Check L code certification result/NG or OK OK: L code certification result normal NG: L code certification result abnormal - OK OK is displayed on the Techstream. NG --> See step 22 OK: Go to next step
  5. READ VALUE USING TECHSTREAM (ENGINE START CONDITION) Use the Data List to check if the engine start is functioning properly. SMART ACCESS Tester Display Measurement Item/Range Normal Condition Diagnostic Note Engine Start Condition Engine start condition by certification ECU (smart key ECU assembly)/OK or NG OK: Engine start permitted NG: Engine start prohibited - OK OK is displayed on the Techstream. NG --> See step 23 OK: Go to next step
  6. READ VALUE USING TECHSTREAM (S CODE) Use the Data List to check if S code certification is functioning properly. SMART ACCESS Tester Display Measurement Item/Range Normal Condition Diagnostic Note S Code Check S code certification result/NG or OK OK: S code certification result normal NG: S code certification result abnormal - OK OK is displayed on the Techstream. NG --> See step 23 OK: Go to next step
  7. REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) Replace the ID code box (immobilizer code ECU). Refer to «REMOVAL [01/2012 - ]»(ref-603999-S18312758162014031100000) . Register the recognition code (ECU code). Refer to «REGISTRATION [01/2012 - ]»(ref-603929-S01555741022014031100000) . Check that the engine starts. OK Engine starts. NG --> See step 33 OK --> END
  8. READ VALUE USING TECHSTREAM (SHIFT LOCK CONTROL ECU) Use the Data List to check if the shift position signal is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift P Signal Shift P position signal/ON or OFF ON: Shift lever in P OFF: Shift lever not in P - OK ON (shift lever in P) and OFF (shift lever not in P) are displayed on the Techstream. NG --> See step 13 OK: Go to next step
  9. READ VALUE USING TECHSTREAM (PARK/NEUTRAL POSITION SWITCH) Use the Data List to check if the park/neutral switch is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Neutral SW/ Clutch SW Park/neutral position switch/ON or OFF ON: Shift lever in P or N OFF: Shift lever not in P or N - OK ON (shift lever in P or N) and OFF (shift lever not in P or N) are displayed on the Techstream. NG --> See step 15 OK: Go to next step
  10. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Use the Data List to check if the stop light switch is functioning properly. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note Stop Light SW Stop light switch/ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - OK ON (brake pedal is depressed) and OFF (brake pedal is released) are displayed on the Techstream. NG --> See step 19 OK: Go to next step
  11. CHECK STEERING LOCK Check if the steering lock is released when turning the engine switch on (ACC). OK The steering lock is released. NG --> See step 26 OK: Go to next step
  12. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) Measure the voltage according to the value(s) in the table below. HINT: The voltage is generated at terminal STSW for 0.3 seconds when the engine cranks. Standard Voltage Tester Connection Condition Specified Condition E4-4 (STSW) - Body ground Brake pedal depressed with shift lever in P, engine switch pushed once 11 to 14 V NG --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) OK --> See step 34
  13. CHECK SHIFT LOCK CONTROL ECU SUB-ASSEMBLY Disconnect the E51 shift lock control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 11 (P2) - 3 (E) Shift lever not in P Below 1 ohms 11 (P2) - 3 (E) Shift lever in P 10 kohms or higher NG --> See step 28 OK: Go to next step
  14. CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL ECU - MAIN BODY ECU AND BODY GROUND) Disconnect the E4 main body ECU connector. Disconnect the E51 shift lock control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E4-2 (P) - E51-11 (P2) Always Below 1 ohms E51-3 (E) - Body ground Always Below 1 ohms E4-2 (P) or E51-11 (P2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  15. INSPECT STARTER RELAY (ST) Remove the starter relay from the engine room relay block. Measure the resistance according value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied to terminals 1 and 2 10 kohms or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 ohms NG --> REPLACE STARTER RELAY OK: Go to next step
  16. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Disconnect the C19 park/neutral position switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 4 (B) - 5 (L) P Below 1 ohms 4 (B) - 5 (L) N Below 1 ohms 4 (B) - 5 (L) Not in P or N 10 kohms or higher NG --> See step 29 OK: Go to next step
  17. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - PARK/NEUTRAL POSITION SWITCH) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E1-8 (STR) - C19-4 (B) Always Below 1 ohms E1-8 (STR) or C19-4 (B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  18. CHECK HARNESS AND CONNECTOR (STARTER RELAY - PARK/NEUTRAL POSITION SWITCH AND BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C19-5 (L) - Relay block ST relay terminal 1 Always Below 1 ohms C19-5 (L) or Relay block ST relay terminal 1 - Body ground Always 10 kohms or higher Relay block ST relay terminal 2 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  19. INSPECT FUSE (STOP) Remove the STOP fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition STOP fuse Always Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
  20. INSPECT STOP LIGHT SWITCH ASSEMBLY Disconnect the A30 stop light switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - 2 Stop light switch pin not pushed Below 1 ohms 3 - 4 Stop light switch pin pushed Below 1 ohms 1 - 2 Stop light switch pin pushed 10 kohms or higher 3 - 4 Stop light switch pin not pushed 10 kohms or higher NG --> See step 30 OK: Go to next step
  21. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - MAIN BODY ECU AND BATTERY) Disconnect the 2B main body ECU connector. Disconnect the A30 stop light switch connector. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A30-2 - Body ground Always 11 to 14 V Standard Resistance Tester Connection Condition Specified Condition 2B-22 (STP) - A30-1 Always Below 1 ohms 2B-22 (STP) or A30-1 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  22. REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) Replace the steering lock actuator assembly (steering lock ECU). Refer to «DISASSEMBLY [01/2012 - ]»(ref-603959-S27388203652014031100000) . Register the recognition code (ECU code). Refer to «REGISTRATION [01/2012 - ]»(ref-603929-S01555741022014031100000) . Check that the engine starts. OK Engine starts. NG --> See step 27 OK --> END
  23. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Replace the certification ECU (smart key ECU assembly). Refer to «REMOVAL [01/2012 - ]»(ref-603999-S03861866492014031100000) . Register the recognition code (ECU code). Refer to «REGISTRATION [01/2012 - ]»(ref-603929-S01555741022014031100000) . Check that the engine starts. OK Engine starts. NG --> See step 27 OK --> END
  24. GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR START FUNCTION) (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART [01/2012 - ]»(ref-603981-S11545439812014031100000)
  25. GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR START FUNCTION) (POWER SOURCE MODE DOES NOT CHANGE). Refer to «Power Source Mode does not Change»(ref-603927-S23863068962014031100000)
  26. GO TO STEERING LOCK SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [01/2012 - ]»(ref-603982-S39623408222014031100000)
  27. REPLACE ID CODE BOX (IMMOBILIZER CODE ECU). Refer to «REMOVAL [01/2012 - ]»(ref-603999-S18312758162014031100000)
  28. REPLACE SHIFT LOCK CONTROL ECU SUB-ASSEMBLY. Refer to «DISASSEMBLY [01/2012 - ] - Step 11»(ref-603912-S35980120212014031100000)
  29. REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to «REMOVAL [01/2012 - ]»(ref-603912-S15783754332014031100000)
  30. REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL [01/2012 - ]»(ref-603938-S17790853752014031100000)
  31. GO TO STEERING LOCK SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART [01/2012 - ]»(ref-603982-S34686962532014031100000)
  32. GO TO ENGINE IMMOBILIZER SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to «DIAGNOSTIC TROUBLE CODE CHART [01/2012 - ]»(ref-603929-S08996477362014031100000)
  33. REPLACE ECM. Refer to «REMOVAL [01/2012 - ]»(ref-603905-S14917592232014031100000)
  34. REPLACE ECM. Refer to «REMOVAL [01/2012 - ]»(ref-603905-S14917592232014031100000)
  1. INSPECT ENGINE SWITCH Disconnect the E18 engine switch connector. Apply battery voltage to the terminals of the engine switch, and check the illumination condition of the engine switch indicator light. NOTE: If the positive (+) lead and the negative (-) lead are incorrectly connected, the engine switch indicator light will not illuminate. If the voltage is too low, the indicator light will not illuminate. OK Measurement Condition Condition Specified Condition Battery terminal (+) --> Terminal 11 (SWIL) - Battery terminal (-) --> Terminal 5 (GND) Battery voltage is applied to the terminals Illuminates Battery terminal (+) --> Terminal 12 (INDS) - Battery terminal (-) --> Terminal 5 (GND) Battery terminal (+) --> Terminal 13 (INDW) - Battery terminal (-) --> Terminal 5 (GND) NG --> See step 3 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - MAIN BODY ECU AND BODY GROUND) Disconnect the E1 main body ECU connector. Disconnect the E18 engine switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E1-25 (SWIL) - E18-11 (SWIL) Always Below 1 ohms E1-15 (INDS) - E18-12 (INDS) Always Below 1 ohms E1-14 (INDW) - E18-13 (INDW) Always Below 1 ohms E18-5 (GND) - Body ground Always Below 1 ohms E1-25 (SWIL) or E18-11 (SWIL) - Body ground Always 10 kohms or higher E1-15 (INDS) or E18-12 (INDS) - Body ground Always 10 kohms or higher E1-14 (INDW) or E18-13 (INDW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
  3. REPLACE ENGINE SWITCH. Refer to «REMOVAL [01/2012 - ]»(ref-603926-S38812775902014031100000)

More articles — Smart Access System (Keyless Start) (Diagnostic Codes & Circuit Tests)