From 08/2009

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function): Power Source Mode does not Change to ON (IG and ACC)
- Power Source Mode does not Change to ON (IG and ACC)

DESCRIPTION

When the power switch is pushed with the electrical key in the cabin, the power management control ECU receives signals to change the power source mode.

HINT
To allow use of the Techstream to inspect the push-button start function when the power source mode is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between the Techstream and the power management control ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) B2271

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) B2271

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)
OK -- Continue to next step.

3. READ VALUE USING TECHSTREAM

(a) Reconnect the F97 and F98 connectors to the power management control ECU.

(b) Turn the power switch off.

(c) Connect the Techstream to the DLC3.

(d) Turn the power switch on (IG).

(e) Turn the Techstream on.

(f) Enter the following menus: Body Electrical / Power Source Control / Data List.

(g) Read the Data List according to the display on the Techstream.

Power Source Control





OK:

When more than 1 second elapses after the power switch is turned from off to on (IG), No is displayed in the Data List.

NG -- CHECK FOR DTC
OK -- Continue to next step.

4. READ VALUE USING TECHSTREAM

(a) Read the Data List according to the display on the Techstream.

Power Source Control





OK:

ON (power switch is pushed) and OFF (power switch is not pushed) appear on the screen.

NG -- INSPECT POWER SWITCH
OK -- Continue to next step.

5. CHECK POWER MANAGEMENT CONTROL ECU

(a) Read the Data List according to the display on the Techstream.

Power Source Control





(b) Measure the voltage while checking the Data List on the Techstream.

Standard Voltage:





NG -- REPLACE POWER MANAGEMENT CONTROL ECU Removal
OK -- Continue to next step.

6. CONFIRMATION TEST

(a) Check that the power source mode becomes on (ACC) and on (IG) when the power switch is operated.

OK:

Power source mode becomes on (ACC) and on (IG) when the power switch is operated.

NG -- CHECK RELAY CONTACT SIDE CIRCUIT

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

7. INSPECT POWER SWITCH

(a) Remove the power switch Removal.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





NG -- REPLACE POWER SWITCH Removal
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (POWER SWITCH - POWER MANAGEMENT CONTROL ECU AND BODY GROUND)

(a) Disconnect the F97 and F98 connectors 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 -- REPLACE POWER MANAGEMENT CONTROL ECU Removal

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SWITCH - POWER MANAGEMENT CONTROL ECU OR BODY GROUND)

9. CHECK FOR DTC

(a) Enter the following menus: Body Electrical / Power Source Control and Smart Access / DTC.

(b) Check for DTCs.

Result:





C -- GO TO OTHER FLOW CHART (DTC B2287)

B -- GO TO OTHER FLOW CHART (Room Oscillator does not Recognize Key)

A -- GO TO DIAGNOSTIC TROUBLE CODE CHART