DESCRIPTION
When the engine 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
Refer to DTC B2274 (See page ).
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
See page
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
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2. |
CHECK HARNESS AND CONNECTOR |
See page
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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3. |
INSPECT ACC RELAY |
See page
NG | ![]() |
REPLACE ACC RELAY |
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4. |
CHECK HARNESS AND CONNECTOR |
See page
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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5. |
CHECK HARNESS AND CONNECTOR |
See page
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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6. |
CHECK POWER MANAGEMENT CONTROL ECU |
(a) Reconnect the all connectors. |
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(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D43-19 (ACCD) - Body ground |
Engine switch off |
Below 1 V |
D43-19 (ACCD) - Body ground |
Engine switch on (IG) |
Output voltage at terminal AM21 or AM22 -2 V or more |
*1 |
Components with harness connected (Power Management Control ECU) |
OK | ![]() |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
NG | ![]() |
REPLACE POWER MANAGEMENT CONTROL ECU |
Removal
REMOVAL
PROCEDURE
1. REMOVE FRONT DOOR SCUFF PLATE LH
2. REMOVE COWL SIDE TRIM SUB-ASSEMBLY LH
3. REMOVE LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL
4. REMOVE OUTER MIRROR SWITCH ASSEMBLY
(a) Disengage the 2 claws and remove the outer m ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
The front side fix window assembly can be reused. When installing the
window, if any of the clips on the quarter window glass are broken, butyl
tape can be used to support the glass until the applied adh ...
System Diagram
SYSTEM DIAGRAM
Communication Table
Transmitting ECU
(Transmitter)
Receiving ECU
(Receiver)
Signal
Communication Method
Combination meter
Power management control ECU
...