Smart Access System (Keyless Start) (Diagnostic Codes & Symptom Tests): Overview Lexus GS III рестайлинг

DESCRIPTION

This DTC is output when the IG output circuits inside the power source control ECU are open or short.

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1. INSPECT FUSE (AM2) Remove the AM2 fuse from the main body ECU RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the K73 ECU connector. Measure the voltage and resistance of the wire harness side connector. Standard voltage Tester Connection Specified Condition K73-33 (AM1) - Body ground 10 to 14 V K73-12 (AM2) - Body ground 10 to 14 V Standard resistance Tester Connection Specified Condition K73-6 (GND2) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU

This DTC is output when a malfunction is occurring in the IG1D output circuit, which is from the RH-IG relay 1 actuation circuit inside the power source control ECU to the RH-IG relay 1.

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1. CHECK WIRE HARNESS (MAIN BODY ECU RH - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the DA and DD ECU connectors. Disconnect the K73 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition DD-6 - K73-34 (IG1D) Below 1 ohms DA-5 - Body ground Below 1 ohms DD-7 - Body ground Below 1 ohms DD-6 or K73-34 (IG1D) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK MAIN BODY ECU RH (RH-IG RELAY 1) Disconnect the DD and DM ECU connectors. Measure the resistance of the ECU connectors. Standard resistance Tester Connection Condition Specified Condition DM-1 - DD-14 When battery voltage is not applied to terminals DD-6 and DA-5 or DD-7 10 kohms or higher DM-1 - DD-14 When battery voltage is applied to terminals DD-6 and DA-5 or DD-7 Below 1 ohms DD-6 - DD-7 20°C (68°F) Approx. 88.2 ohms NG --> REPLACE MAIN BODY ECU RH OK: Go to next step
3. CHECK POWER SOURCE CONTROL ECU (IG1D VOLTAGE) Measure the output voltage of the power source control ECU. Standard voltage Tester Connection Condition Specified Condition 34 (IG1D) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

This DTC is output when a malfunction is occurring in the IG2D output circuit, which is from the IG2 relay actuation circuit inside the power source control ECU to the IG2 relay.

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1. INSPECT IG2 RELAY Remove the IG2 relay from the engine room No. 1 relay block. 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 --> REPLACE IG2 RELAY OK: Go to next step
2. CHECK WIRE HARNESS (ENGINE ROOM NO. 1 RELAY BLOCK - POWER SOURCE CONTROL ECU) Remove the IG2 relay from the engine room No. 1 relay block. Disconnect the K73 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition Engine room No. 1 relay block IG2 relay terminal 2 - K73-35 (IG2D) Below 1 ohms Engine room No. 1 relay block IG2 relay terminal 1 - Body ground Below 1 ohms K73-35 (IG2D) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK POWER SOURCE CONTROL ECU (IG2D VOLTAGE) Measure the output voltage of the power source control ECU. Standard voltage Tester Connection Condition Specified Condition 35 (IG2D) - Body ground Power switch ON (IG) 10 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

This DTC is output when a malfunction is occurring in the ACCD output circuit, which is from the ACC relay actuation circuit inside the power source control ECU to the ACC relay.

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1. CHECK WIRE HARNESS (MAIN BODY ECU RH - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the DA and DD ECU connectors. Disconnect the K73 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition DD-2 - K73-11 (ACCD) Below 1 ohms DA-5 - Body ground Below 1 ohms DD-7 - Body ground Below 1 ohms K73-11 (ACCD) - Body ground 10 kohms or higher DD-2 or K73-11 (ACCD) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK MAIN BODY ECU RH (ACC RELAY) Disconnect the DD and DM ECU connectors. Measure the resistance of the ECU connectors. Standard resistance Tester Connection Condition Specified Condition DM-1 - DD-27 or DD-26 When battery voltage is not applied to terminals DD-2 and DD-7 or DA-5 10 kohms or higher DM-1 - DD-27 or DD-26 When battery voltage is applied to terminals DM-1 and DD-7 or DA-5 Below 1 ohms DD-2 - DD-7 20°C (68°F) Approx. 88.2 ohms NG --> REPLACE MAIN BODY ECU RH OK: Go to next step
3. CHECK POWER SOURCE CONTROL ECU (ACCD VOLTAGE) Measure the output voltage of the power source control ECU. Standard voltage Tester Connection Condition Specified Condition 11 (ACCD) - Body ground Power switch ON (ACC) 10 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

This DTC is output when the ST output circuits inside the power source control ECU are open or short.

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1. CHECK FOR DTC Check for the DTC. Result Result Proceed to DTC B2285 is not output A DTC B2285 is output B B --> GO TO «DTC B2285: Steering Lock Position Signal Circuit Malfunction; DTC B2288: Steering Lock Signal Circuit Malfunction»(ref-387106-S23564295432011022400000) A: Go to next step
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - HV CONTROL ECU) Disconnect the K73 ECU connector. Disconnect the A54 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K73-39 (STSW) - A54-22 (ST2) Below 1 ohms K73-39 (STSW) or A54-22 (ST2) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK POWER SOURCE CONTROL ECU Measure the output voltage of the power source control ECU. Standard voltage Tester Connection Condition Specified Condition 39 (STSW) - Body ground Power switch pressed with brake pedal depressed --> After approx. 1 sec. has passed, release power switch 10 to 14 V --> Below 1 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> GO TO THE APPROPRIATE HYBRID CONTROL SERVICE INFORMATION

This DTC is output when the submersion circuit monitor inside the power source control ECU detects that the vehicle is submerged in water.

This DTC is output when: 1) a malfunction is detected between the power source control ECU and the power switch; or 2) either of the switches inside the power switch is malfunctioning.

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1. READ VALUE USING TECHSTREAM (START SWITCH 1 and 2) Check the DATA LIST for proper functioning of the start switch 1 and 2. POWER SOURCE CONTROL ECU Tester Display Measurement Item/Range Normal Condition Diagnostic Note Start Switch1 Start Switch 1 / ON or OFF ON: Power switch pushed OFF: Power switch not pushed - Start Switch2 Start Switch 2 / ON or OFF ON: Power switch pushed OFF: Power switch not pushed - OK ON (power switch ON (IG)) appears on the screen. OK --> REPLACE POWER SOURCE CONTROL ECU NG: Go to next step
2. INSPECT POWER SWITCH Remove the power 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 POWER SWITCH OK: Go to next step
3. CHECK WIRE HARNESS (POWER SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the K29 switch connector. Disconnect the K73 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K29-7 (SS1) - K73-14 (SSW1) Below 1 ohms K29-2 (SS2) - K73-37 (SSW2) Below 1 ohms K29-5 (GND) - Body ground Below 1 ohms K29-7 (SS1) or K73-14 (SSW1) - Body ground 10 kohms or higher K29-2 (SS2) or K73-37 (SSW2) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU

The power source control ECU and the shift lock control ECU are connected by a cable. If the cable information and CAN/BEAN (between HV control ECU and power source control ECU) information are inconsistent, this DTC will be output.

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1. INSPECT SHIFT LOCK CONTROL ECU Disconnect the K39 ECU connector. Measure the resistance of the ECU. Standard resistance Tester Connection Condition Specified Condition 11 (P2) - 8 (E) Shift lever position in P 10 kohms or higher 11 (P2) - 8 (E) Shift lever position other than P Below 1 ohms NG --> GO TO THE APPROPRIATE SHIFT LOCK SERVICE INFORMATION OK: Go to next step
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - SHIFT LOCK CONTROL ECU) Disconnect the K73 ECU connector. Disconnect the K39 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K73-5 (P) - K39-11 (P2) Below 1 ohms K73-5 (P) or K39-11 (P2) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. READ VALUE USING TECHSTREAM (SHIFT P SIGNAL) Check the DATA LIST for proper functioning of the shift position signal. Power source control ECU Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift P Signal Shift position signal / ON or OFF ON: Shift position is P OFF: Shift position is not P - OK ON (shift position is P) appears on screen. NG --> GO TO THE APPROPRIATE HYBRID CONTROL SERVICE INFORMATION OK --> REPLACE POWER SOURCE CONTROL ECU

The power source control ECU and the combination meter are connected by a cable and the BEAN. DTC B2282 is output when: 1) the cable information and BEAN information are inconsistent; and 2) a malfunction is detected between the vehicle speed sensor and combination meter.

The skid control ECU converts these signals into 4-pulse signals and sends them to the combination meter. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the power source control ECU. The power source control ECU determines the vehicle speed based on the frequency of these pulse signals.

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1. READ VALUE USING TECHSTREAM (VEHICLE SPEED SIGNAL) Check the DATA LIST for proper functioning of the vehicle speed signal. Power source control ECU 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) appears on screen. OK --> REPLACE POWER SOURCE CONTROL ECU NG: Go to next step
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - COMBINATION METER) Disconnect the K73 ECU connector. Disconnect the K31 meter connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K73-19 (SPD) - K31-9 (+S) Below 1 ohms K73-19 (SPD) or K31-9 (+S) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK POWER SOURCE CONTROL ECU (VEHICLE SPEED SIGNAL) Measure the voltage of the power source control ECU. Standard voltage Tester Connection Condition Specified Condition 19 (SPD) - Body ground Driving at approx. 20 km/h (12 mph) Pulse generation. Refer to «TERMINALS OF ECU»(ref-387105-S20132962612011022400000) NG --> GO TO THE APPROPRIATE METER / GAUGE SERVICE INFORMATION OK --> REPLACE POWER SOURCE CONTROL ECU

This DTC is output when: 1) the brake signal circuit between the power source control ECU and the stop light switch is malfunctioning; and 2) the BEAN information is inconsistent.

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1. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Check the DATA LIST for proper functioning of the stop light switch. Power source control ECU 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) appears on screen. OK --> REPLACE POWER SOURCE CONTROL ECU NG: Go to next step
2. INSPECT FUSE (STOP SW) Remove the STOP SW fuse from main body ECU RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
3. INSPECT STOP LIGHT SWITCH Remove the switch. Measure the resistance of the switch. Standard resistance Tester Connection Condition Specified Condition 1 - 2 Switch pin not pushed Below 1 ohms 3 - 4 Switch pin not pushed 10 kohms or higher 1 - 2 Switch pin pushed 10 kohms or higher 3 - 4 Switch pin pushed Below 1 ohms NG --> REPLACE STOP LIGHT SWITCH OK: Go to next step
4. CHECK WIRE HARNESS (STOP LIGHT SWITCH - POWER SOURCE CONTROL ECU AND BATTERY) Disconnect the A35 switch connector. Disconnect the K73 ECU connector. Measure the voltage and resistance of the wire harness side connectors. Standard voltage Tester Connection Specified Condition A35-2 - Body ground 11 to 14 V Standard resistance Tester Connection Specified Condition A35-1 - K73-1 (STP) Below 1 ohms A35-1 or K73-1 (STP) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Check the DATA LIST for proper functioning of the stop light switch. Rear multiplex network ECU 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 depressed) appears on screen. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> GO TO THE APPROPRIATE LIGHTING SERVICE INFORMATION

The power source control ECU and the steering lock ECU are connected by a cable and the LIN. These DTCs are output when: 1) the cable information and LIN information are inconsistent; and 2) a malfunction is detected between the power source control ECU and the steering lock ECU.

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1. CHECK FOR DTC Check for the DTC. Result Result Proceed to DTCs are not output A DTC B2287 is output B B --> GO TO «DTC B2287: LIN Communication Master Malfunction»(ref-387106-S07662308452011022400000) A: Go to next step
2. READ VALUE USING TECHSTREAM (STEERING LOCK CONDITION) Check the DATA LIST for proper functioning of the steering lock condition. Power source control ECU 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) appears on the screen. OK --> REPLACE POWER SOURCE CONTROL ECU NG: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the K73 ECU connector. Disconnect the K28 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K73-26 (SLP) - K28-4 (SLP1) Below 1 ohms K73-26 (SLP) or K28-4 (SLP1) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. REPLACE STEERING LOCK ECU Temporarily replace the steering lock ECU with a new or normally functioning one. Check that the engine (hybrid) starts normally. OK Engine (hybrid) starts normally. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END (STEERING LOCK ECU IS FAULTY)

The power source control ECU and the HV control ECU are connected by a cable and the BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.

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1. READ VALUE USING TECHSTREAM (READY CONDITION) Check the DATA LIST for proper functioning of the engine condition. Power source control ECU Tester Display Measurement Item/Range Normal Condition Diagnostic Note Ready Signal READY condition / ON or OFF or UNKNOWN ON: Power switch ON (READY) OFF: Power switch ON (IG) / (READY OFF) UNKNOWN: Power switch OFF - OK ON (engine (hybrid) running) appears on screen. OK --> REPLACE POWER SOURCE CONTROL ECU NG: Go to next step
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - HV CONTROL ECU) Disconnect the K73 ECU connector. Disconnect the A54 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K73-22 (RDY) - A54-117 (RDY) Below 1 ohms K73-22 (RDY) or A54-117 (RDY) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK POWER SOURCE CONTROL ECU (READY SIGNAL) Measure the voltage of the power source control ECU. Standard voltage Tester Connection Condition Specified Condition 22 (RDY) - Body ground Power switch ON (IG) or ON (READY) Pulse generation. Refer to «TERMINALS OF ECU»(ref-387105-S20132962612011022400000) NG --> GO TO THE APPROPRIATE HYBRID CONTROL SERVICE INFORMATION OK --> REPLACE POWER SOURCE CONTROL ECU

This DTC is output when: 1) any other DTC is set in the power source control ECU; or 2) the wire harness between the power source control ECU and the certification ECU is open or shorted.

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1. CHECK FOR DTC Check for DTC. RESULT Result Proceed to DTC B2785 is not output A A: Go to next step
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - CERTIFICATION ECU) Disconnect the K73 ECU connector. Disconnect the U28 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K73-30 (LIN1) - U28-10 (LIN) Below 1 ohms K73-30 (LIN1) or U28-10 (LIN) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. REPLACE CERTIFICATION ECU Temporarily replace the certification ECU with a new or normally functioning one. Check for DTCs again. OK No DTC is output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END (CERTIFICATION ECU IS FAULTY)

This DTC is output when there is a LIN communication problem between the power source control ECU and certification ECU or when there is a problem in the engine immobiliser system.

If the certification ECU detects the key inside the vehicle when the shift lever position is P and the brake pedal is not depressed, each press of the power switch changes the power source mode in the following order: OFF, ON (ACC), ON (IG), OFF. If one of the DTCs shown in the following illustration is detected, correct the DTCs according to the DTC chart. If the power source mode is still malfunctioning, one of the following may have occurred: 1) the MPX circuit has a malfunction, 2) the certification ECU has determined that the key is not inside the vehicle, 3) the power switch has a malfunction, or 4) the power source control ECU has a malfunction.

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Engine (hybrid) start conditions or system malfunctions can be checked by the status of the power switch indicator light.

POWER SWITCH INDICATOR LIGHT CONDITION

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1. INSPECT POWER SWITCH Remove the power 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 power switch indicator does not illuminate. If the voltage is too low, the indicator will not illuminate. OK Measurement Condition Specified Condition (Color) Battery positive (+) --> Terminal 11 (SWIL) Battery negative (-) --> Terminal 4 (COM) or 5 (GND) Illuminates (greenish white) Battery positive (+) --> Terminal 12 (INDS) Battery negative (-) --> Terminal 4 (COM) or 5 (GND) Illuminates (green) Battery positive (+) --> Terminal 13 (INDW) Battery negative (-) --> Terminal 4 (COM) or 5 (GND) Illuminates (amber) NG --> REPLACE POWER SWITCH OK: Go to next step
2. CHECK WIRE HARNESS (POWER SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the K29 switch connector. Disconnect the K73 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K29-11 (SWIL) - K73-36 (SWIL) Below 1 ohms K29-12 (INDS) - K73-4 (INDS) Below 1 ohms K29-13 (INDW) - K73-13 (INDW) Below 1 ohms K29-5 (GND) - Body ground Below 1 ohms K29-4 (COM) - Body ground Below 1 ohms K29-11 (SWIL) or K73-36 (SWIL) - Body ground 10 kohms or higher K29-12 (INDS) or K73-4 (INDS) - Body ground 10 kohms or higher K29-13 (INDW) or K73-13 (INDW) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU

When the key is in the vehicle interior and the power switch is pushed, the power source control ECU receives the signal and the power source mode changes.

When the key is in the vehicle interior, the shift lever is on P, the brake is pedal depressed and the power switch is pushed, the power source control ECU receives the signal and the power source mode changes to ON (READY).

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1. CHECK WHETHER HYBRID SYSTEM STARTS AFTER STEERING LOCK INITIALIZATION Open and close the driver door when the power switch is OFF. Check that the engine (hybrid) starts. OK Engine (hybrid) starts. HINT: After the battery runs out, the engine (hybrid) may not start if the steering lock ECU has not been initialized (lock / unlock may not be recorded) through the procedure described above. OK --> END (SYSTEM IS OK) NG: Go to next step
2. CHECK FOR DTC (EACH SYSTEM) Delete the DTCs. HINT: After all DTCs are cleared, check if the trouble occurs again 5 seconds after the power switch is turned ON (IG). Check for DTCs again. RESULT Result Proceed to DTC is not output A DTC is output B HINT: "Each system" means the hybrid control system, engine immobiliser system, electrical steering lock, SFI system and smart access system. B --> GO TO THE APPROPRIATE DTC CHART (EACH SYSTEM) A: Go to next step
3. CHECK SWITCH CONDITION Ensure the electrical key is inside the cabin. Check that the power source mode changes as shown below each time the power switch is pushed. OK OFF --> ON (ACC) --> ON (IG) --> OFF NG --> GO TO POWER SOURCE MODE DOES NOT CHANGE. Refer to «Power Source Mode does not Change»(ref-387106-S17601897702011022400000) . OK: Go to next step
4. READ VALUE USING TECHSTREAM (STEERING LOCK CONDITION) Check the DATA LIST for proper functioning of the steering lock condition. POWER SOURCE CONTROL ECU Tester Display Measurement Item/Range Normal Condition Diagnostic Code Steering Unlock SW Steering lock condition / ON or OFF ON: Steering is unlocked OFF: Steering is locked - OK ON (steering is unlocked) appears on screen. NG --> GO TO ELECTRIC STEERING LOCK. Refer to «STEERING LOCK SYSTEM (DIAGNOSTICS - INTRODUCTION)»(ref-387109) . OK: Go to next step
5. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH) Check the DATA LIST for proper functioning of the stop light switch. POWER SOURCE CONTROL ECU Tester Display Measurement Item/Range Normal Condition Diagnostic Code Stop Light SW Stop light switch signal / ON or OFF ON: Brake pedal depressed OFF: Brake pedal released - OK ON (brake pedal depressed) appears on screen. NG --> See step 12 OK: Go to next step
6. CHECK STEERING LOCK When the power switch is ON (ACC), check that the steering lock can be released. OK Steering lock can be released. NG --> GO TO ELECTRIC STEERING LOCK. Refer to «STEERING LOCK SYSTEM (DIAGNOSTICS - INTRODUCTION)»(ref-387109) . OK: Go to next step
7. CHECK POWER SOURCE CONTROL ECU Measure the output voltage of the power source control ECU. Standard voltage Tester Connection Condition Specified Condition 39 (STSW) - Body ground Power switch pressed with brake pedal depressed --> After approx. 1 sec. has passed, release power switch 10 to 14 V --> Below 1 V NG --> See step 15 OK: Go to next step
8. READ VALUE USING TECHSTREAM (L CODE) Check the DATA LIST for proper functioning of the L code check. CERTIFICATION ECU Tester Display Measurement Item/Range Normal Condition Diagnostic Code L Code Check L code check / OK or NG OK: L code certification result is normal NG: L code certification result is abnormal - OK OK (L code check result is normal) appears on screen. NG --> See step 16 OK: Go to next step
9. READ VALUE USING TECHSTREAM (START REQUEST) Check the DATA LIST for proper functioning of the engine (hybrid) start request. CERTIFICATION ECU Tester Display Measurement Item/Range Normal Condition Diagnostic Code Start Request Engine (hybrid) start request signal / YES or NO YES: Engine (hybrid) start NO: Engine (hybrid) stop - OK Start request is OK. NG --> See step 17 OK: Go to next step
10. READ VALUE USING TECHSTREAM (S CODE) Check the DATA LIST for proper functioning of the S code check. CERTIFICATION ECU Tester Display Measurement Item/Range Normal Condition Diagnostic Code S Code Check S code check / OK or NG OK: S code certification result is normal NG: S code certification result is abnormal - OK OK (S code check result is normal) appears on screen. NG --> See step 17 OK: Go to next step
11. REPLACE ID CODE BOX Temporarily replace the ID code box with a new or normally functioning one. Check that the engine (hybrid) starts normally. OK Engine (hybrid) starts normally. NG --> GO TO THE APPROPRIATE HYBRID CONTROL SERVICE INFORMATION OK --> END (ID CODE BOX IS FAULTY)
12. INSPECT FUSE (STOP SW) Remove the STOP SW fuse from main body ECU RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
13. INSPECT STOP LIGHT SWITCH Inspect the stop light switch. Refer to «INSPECTION»(ref-387111-S07767990192011022400000) . NG --> REPLACE STOP LIGHT SWITCH OK: Go to next step
14. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY) Disconnect the K73 ECU connector. Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition K73-1 (STP) - Body ground Brake pedal depressed 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU
15. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - HV CONTROL ECU) Disconnect the K73 ECU connector. Disconnect the A54 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition K73-39 (STSW) - A54-22 (ST2) Below 1 ohms K73-39 (STSW) or A54-22 (ST2) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU
16. REPLACE STEERING LOCK ECU Temporarily replace the steering lock ECU with a new or normally functioning one. Check that the engine (hybrid) starts normally. OK Engine (hybrid) starts normally. NG --> REPLACE ID CODE BOX OK --> END (STEERING LOCK ECU IS FAULTY)
17. REPLACE CERTIFICATION ECU Temporarily replace the certification ECU with a new or normally functioning one. Check that the engine (hybrid) starts normally. OK Engine (hybrid) starts normally. NG --> REPLACE ID CODE BOX OK --> END (CERTIFICATION ECU IS FAULTY)