Up to 08/2009
THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function): Power Source Mode does not Change to ON (READY)
- Power Source Mode does not Change to ON (READY)
DESCRIPTION
When the electronic key is in the cabin and the power switch is pressed, the power management control ECU receives a signal and changes the power source mode. In addition, when the power switch is pressed with the shift lever in P and the brake pedal depressed, the hybrid system turns on (READY).
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
* When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. CHECK HYBRID SYSTEM READY ON
(a) Place the electrical key on the driver seat.
(b) Move the shift lever to P.
(c) Depress the brake pedal.
(d) Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).
OK:
Power source mode becomes on (READY).
NG -- CHECK FOR DTC
OK -- END (HYBRID SYSTEM PERMISSION CONDITIONS WERE NOT SATISFIED)
2. CHECK FOR DTC
(a) Turn the power switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the power switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Hybrid Control / DTC.
(f) Check for DTCs.
OK:
DTC is not output.
NG -- GO TO HYBRID CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Hybrid Control System
OK -- Continue to next step.
3. CHECK FOR DTC
(a) Enter the following menus: Body Electrical / Power Source Control / Data List.
(b) Check for DTCs.
OK:
DTC is not output.
NG -- GO TO DIAGNOSTIC TROUBLE CODE CHART Smart Access System With Push-Button Start (for Start Function)
OK -- Continue to next step.
4. CHECK POWER SOURCE CONDITION
(a) Check if the power source mode changes.
(1) When the key is inside the vehicle and the shift lever is in P, check that the power source mode changes.
Result:
D -- GO TO OTHER FLOW CHART (Power Source Mode does not Change to ON (ACC))
C -- GO TO OTHER FLOW CHART (Power Source Mode does not Change to ON (IG))
B -- GO TO OTHER FLOW CHART (Power Source Mode does not Change to ON (IG and ACC))
A -- Continue to next step.
5. READ VALUE USING TECHSTREAM (STEERING UNLOCK SWITCH)
(a) Enter the following menus: Body Electrical / Power Source Control / Data List.
(b) Read the Data List according to the display on the Techstream.
Power Source Control
OK:
ON (steering is unlocked) and OFF (steering is locked) appear on the screen.
NG -- GO TO STEERING LOCK SYSTEM
OK -- Continue to next step.
6. READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH ASSEMBLY)
(a) Read the Data List according to the display on the Techstream.
Power Source Control
OK:
ON (brake pedal is depressed) and OFF (brake pedal is released) appear on the screen.
NG -- INSPECT STOP LIGHT SWITCH ASSEMBLY
OK -- Continue to next step.
7. READ VALUE USING TECHSTREAM (L CODE)
(a) Enter the following menus: Body Electrical / Smart Access / Data List.
(b) Read the Data List according to the display on the Techstream.
Smart Access
OK:
OK appears on the screen.
NG -- REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)
OK -- Continue to next step.
8. READ VALUE USING TECHSTREAM (ENGINE START REQUEST)
(a) Read the Data List according to the display on the Techstream.
Smart Access
OK:
OK appears on the screen.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK -- Continue to next step.
9. READ VALUE USING TECHSTREAM (S CODE)
(a) Read the Data List according to the display on the Techstream.
Smart Access
OK:
OK appears on the screen.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK -- Continue to next step.
10. CHECK ID CODE BOX (IMMOBILIZER CODE ECU)
(a) Measure the voltage according to the value(s) in the table below.
OK:
The waveform is displayed as shown in illustration.
Text in Illustration
NG -- REPLACE ID CODE BOX (IMMOBILIZER CODE ECU)
OK -- Continue to next step.
11. READ VALUE USING TECHSTREAM
(a) Enter the following menus: Body Electrical / Power Source Control / Data List.
(b) Read the Data List according to the display on the Techstream.
Power Source Control
OK:
Data List display changes when the power switch is operated.
NG -- REPLACE POWER MANAGEMENT CONTROL ECU Removal
OK -- GO TO HYBRID CONTROL SYSTEM
12. INSPECT STOP LIGHT SWITCH ASSEMBLY [1][2]B Code Charts
NG -- REPLACE STOP LIGHT SWITCH ASSEMBLY Removal
OK -- Continue to next step.
13. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY)
(a) Disconnect the A81 connector from the power management control ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY)
OK -- REPLACE POWER MANAGEMENT CONTROL ECU Removal
14. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)
(a) Replace steering lock actuator Disassembly.
NEXT -- Continue to next step.
15. CHECK HYBRID SYSTEM READY ON
(a) Place the electrical key on the driver seat.
(b) Move the shift lever to P.
(c) Depress the brake pedal.
(d) Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).
OK:
Power source mode becomes on (READY).
NG -- REPLACE ID CODE BOX (IMMOBILIZER CODE ECU)
OK -- END (STEERING LOCK ACTUATOR (STEERING LOCK ECU) WAS DEFECTIVE)
16. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
(a) Replace certification ECU (smart key ECU assembly).
NEXT -- Continue to next step.
17. CHECK HYBRID SYSTEM READY ON
(a) Place the electrical key on the driver seat.
(b) Move the shift lever to P.
(c) Depress the brake pedal.
(d) Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).
OK:
Power source mode becomes on (READY).
NG -- REPLACE ID CODE BOX (IMMOBILIZER CODE ECU)
OK -- END (ID CODE BOX (IMMOBILIZER CODE ECU) WAS DEFECTIVE)