STEP 1. 12V starter battery check
STEP 2. Using scan tool (M.U.T.-IIISE), read the diagnostic trouble code.
(1) caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn the power supply mode of the electric motor switch to the OFF before connecting or disconnecting scan tool (M.U.T.-IIISE). |
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect scan tool (M.U.T.-IIISE)
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(2) Turn the power supply mode of the electric motor switch to ON.
(3) Check if the diagnosis trouble code is set in the OSS-ECU.
(4) Turn the power supply mode of the electric motor switch to OFF.
Is the DTC set?
Refer to diagnostic trouble code chart
.
Go to Step 3
.
STEP 3. Using scan tool (M.U.T.-IIISE), check data list.
(1) caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn the power supply mode of the electric motor switch to the OFF before connecting or disconnecting scan tool (M.U.T.-IIISE). |
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE)
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(2) Turn the power supply mode of the electric motor switch to OFF.
(3) Operate the brake pedal. | Operation state | Item No. | Check item | Display | Brake pedal is depressed | 3 | Stoplight switch | ON | Brake pedal released | OFF |
|
OK: Operation state and data list display agree with each other.
Is the check result normal?
Go to Step 5
. : Go to Step 4
.
STEP 4. Stoplight Switch Check
STEP 5. Voltage measurement at ETACS-ECU connector (ST2 terminal)
(1) With the ETACS-ECU connector kept connected, measure by backprobing.
(2) Using the scan tool (M.U.T.-IIISE), set the forced power supply output to other than "IG-ST".(Refer to
.) (3) Measure the voltage between the ETACS-ECU connector (ST2 terminal) and body ground.OK: 1 V or less
(4) Using the scan tool (M.U.T.-IIISE), set the forced power supply output to "IG-ST".(Refer to
.) (5) Measure the voltage between the ETACS-ECU connector (ST2 terminal) and body ground.OK: System voltage
Is the check result normal?
: Go to Step 6
. : Replace the OSS-ECU and register the VIN (Refer to
).
STEP 6. Using scan tool (M.U.T.-IIISE) other system data list
(1) caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn the power supply mode of the electric motor switch to the OFF before connecting or disconnecting scan tool (M.U.T.-IIISE). |
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE)
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(2) Turn the power supply mode of the electric motor switch to OFF.
(3) Using the scan tool (M.U.T.-IIISE), set the forced power supply output to "IG-ST".(Refer to
.) (4) Check the PHEV-ECU data list. | Item No. | Check item | Display | 2 | Power SW(ST) signal | ON |
|
OK: Operation state and data list display agree with each other.
(5) Using the scan tool (M.U.T.-IIISE), set the forced power supply output to other than "IG-ST".(Refer to
.) (6) Check the PHEV-ECU data list. | Item No. | Check item | Display | 2 | Power SW(ST) signal | OFF |
|
OK: Operation state and data list display agree with each other.
Is the check result normal?
Go to Step 8
.
Go to Step 7
.
STEP 7. Check of open circuit in ST2 line between ETACS-ECU connector and PHEV-ECU connector
STEP 8. Check of the troubles