Power Source Mode Does Not Change To ON (Ready)
3MZ-FE STARTING: SMART KEY SYSTEM: Power Source Mode does not Change to ON (READY)
Power Source Mode does not Change to ON (READY)
DESCRIPTION
1. HYBRID CONTROL SYSTEM FUNCTION
(a) If the power switch is pressed with the shift lever is in the P or N position and the brake pedal depressed, the main body ECU (instrument panel junction block) determines that it is a hybrid control system start request.
(b) The certification ECU (smart key ECU assembly) and other ECUs perform key verification via the LIN communication line.
(c) The main body ECU (instrument panel junction block) activates the ACC relay.
(d) The main body ECU (instrument panel junction block) activates the IG1 and IG2 relays.
(e) The certification ECU (smart key ECU assembly) outputs a steering UNLOCK signal. The signal is sent to the main body ECU (instrument panel junction block) via the steering lock ECU.
(f) The main body ECU (instrument panel junction block) sends an on (READY) request signal to the hybrid vehicle control ECU.
(g) The hybrid vehicle control ECU sends an ACC cut request signal to the main body ECU (instrument panel junction block).
INSPECTION PROCEDURE
HINT: After the main body ECU (instrument panel junction block), certification ECU (smart key ECU assembly), steering lock ECU, ID code box (immobiliser code ECU) and/or hybrid vehicle control ECU are/is replaced, perform the registration procedures for the engine immobiliser system Engine Immobiliser System.
PROCEDURE
1. CHECK THE POWER SWITCH CONDITION
(a) Check the power source mode changes.
(1) When the key is inside the vehicle and the shift lever is in the P position, check that the power source mode changes.
OK:
off -> on (ACC) -> on (IG) -> off
NG -- GO TO OTHER FLOW CHART
OK -- Continue to next step.
2. CHECK DTC
(a) Delete the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Check for DTCs again.
(c) Proceed to the next step based on the inspection result.
Result:
E -- GO TO DIAGNOSTIC TROUBLE CODE CHART (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)
D -- GO TO DIAGNOSTIC TROUBLE CODE CHART (ENGINE IMMOBILISER SYSTEM)
C -- GO TO DIAGNOSTIC TROUBLE CODE CHART (STEERING LOCK SYSTEM)
B -- GO TO DIAGNOSTIC TROUBLE CODE CHART (SMART KEY SYSTEM (STARTING))
A -- Continue to next step.
3. READ VALUE USING TECHSTREAM (S CODE)
(a) Connect Techstream to the DLC3.
HINT: When using Techstream with the power switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.
(b) Turn the power switch on (IG).
Smart key:
OK:
"OK" is displayed on the screen.
NG -- REGISTER RECOGNITION CODE (ECU CODE)
OK -- Continue to next step.
4. READ VALUE USING TECHSTREAM (L CODE)
(a) Connect Techstream to the DLC3.
HINT: When using Techstream with the power switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.
(b) Turn the power switch on (IG).
Smart key:
OK:
"OK" is displayed on the screen.
NG -- REGISTER RECOGNITION CODE (ECU CODE)
OK -- Continue to next step.
5. READ VALUE USING TECHSTREAM (IMMOBILISER SYSTEM STATUS)
(a) Connect Techstream to the DLC3.
HINT: When using Techstream with the power switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.
(b) Turn the power switch on (IG).
Immobiliser:
OK:
UNSET (Power switch ON) appears on the screen.
NG -- READ VALUE USING TECHSTREAM (ENGINE START REQUEST)
OK -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
6. REGISTER RECOGNITION CODE (ECU CODE)
(a) Register the recognition code (ECU code) Engine Immobiliser System.
NEXT -- Continue to next step.
7. CHECK POWER SWITCH CONDITION
(a) Check the power source mode changes.
(1) When the key is inside the vehicle and the shift lever is in the P position and the brake pedal is depressed check that the power source mode changes.
OK:
off -> on (READY)
NG -- REPLACE CERTIFICATION ECU
OK -- END
8. REPLACE CERTIFICATION ECU
(a) Replace the certification ECU (smart key ECU assembly) Removal.
NEXT -- Continue to next step.
9. KEY REGISTRATION
(a) Register the key Engine Immobiliser System.
NEXT -- Continue to next step.
10. CHECK POWER SWITCH CONDITION
(a) Check the power source mode changes.
(1) When the key is inside the vehicle and the shift lever is in the P position and the brake pedal is depressed check that the power source mode changes.
OK:
off -> on (READY)
NG -- REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
OK -- END
11. REGISTER RECOGNITION CODE (ECU CODE)
(a) Register the recognition code (ECU code) Engine Immobiliser System.
NEXT -- Continue to next step.
12. CHECK THE POWER SWITCH CONDITION
(a) Check the power source mode changes.
(1) When the key is inside the vehicle and the shift lever is in the P position and the brake pedal is depressed check that the power source mode changes.
OK:
off -> on (READY)
NG -- REPLACE STEERING LOCK ECU
OK -- END
13. REPLACE STEERING LOCK ECU
(a) Replace the steering lock ECU Removal.
NEXT -- Continue to next step.
14. REGISTER RECOGNITION CODE (ECU CODE)
(a) Register the recognition code (ECU code) Engine Immobiliser System.
NEXT -- Continue to next step.
15. CHECK THE POWER SWITCH CONDITION
(a) Check the power source mode changes.
(1) When the key is inside the vehicle and the shift lever is in the P position and the brake pedal is depressed check that the power source mode changes.
OK:
off -> on (READY)
NG -- REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
OK -- END
16. READ VALUE USING TECHSTREAM (ENGINE START REQUEST)
(a) Connect Techstream to the DLC3.
HINT: When using Techstream with the power switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.
(b) Turn the power switch on (IG).
Smart key:
OK:
"ON" (STSW signal is ON) and "OFF" (STSW signal is OFF) appear on the screen.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK -- REPLACE ID CODE BOX (IMMOBILISER CODE ECU)