QF - Test

QF: Electronic Throttle Control (ETC) System

QF: Introduction QF - Introduction



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QF1 CHECK FOR DTCS

Are any DTCs present other than the following: P0600, P060A, P060B, P060C, P060D, P061A, P061F, P1674, or U0300?

YES
DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Diagnostic Trouble Code (DTC) Charts and Descriptions Diagnostic Trouble Code Descriptions.

NO
For DTCs P0600, P060A, P060C, P060D, P1674 or U0300, GO to QF2
.

For DTC P060B, GO to QF4
.

For DTCs P061A or P061F, GO to QF6.


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QF2 CHECK THE PCM VOLTAGE CIRCUITS FOR AN OPEN

- Key in OFF position.
- PCM connector disconnected.
- Connect a 5 amp fused jumper wire between the following:





- Key ON, engine OFF.
- Measure the voltage between:





Is the voltage greater than 10.5 V?

YES
GO to QF3.

NO
REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.


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QF3 DTCS P0600, P060A, P060C, P060D, P1674 OR U0300: CHECK THE PCM FOR THE LATEST CALIBRATION

- Key in OFF position.
- Remove the jumper wire(s).
- PCM connector connected.
- Program the PCM to the latest calibration.
- Key in OFF position.
- Key ON, engine OFF.
- Key in OFF position.
- Key ON, engine running.
- Use the customer information to recreate the concern.
- Carry out the self-test.

Are DTCs P0600, P060A, P060C, P060D, P1674 or U0300 present?

YES
GO to QF7.

NO
The concern is not present at this time.


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QF4 DTC P060B: CHECK FOR REFERENCE VOLTAGE CONCERNS

- Inspect the PCM harness for damage.
- Verify the correct operation of the sensors using ETCREF, VREF and related circuits. GO to Pinpoint Test C C - Introduction and follow the pinpoint test direction.

Is a concern present?

YES
REPAIR as necessary.

CLEAR the DTCs. REPEAT the self-test.

NO
GO to QF5.


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QF5 CHECK FOR AN INTERMITTENT CONCERN

- Clear the DTCs.
- Carry out the self-test.

Is DTC P060B present?

YES
GO to QF7.

NO
The concern is not present at this time.


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QF6 DTCS P061A OR P061F: VERIFY THE CUSTOMER CONCERN

- Clear the DTCs.
- Use the customer information to recreate the concern.
- Carry out the self-test.

Are DTCs P061A or P061F present?

YES
CLEAR the DTCs.

RESET the keep alive memory. REFER to Resetting The Keep Alive Memory (KAM) Resetting The Keep Alive Memory (KAM).

GO to QF7.

NO
The concern is not present at this time.


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QF7 CHECK FOR CORRECT PCM OPERATION

- Disconnect all the PCM connectors.
- Visually inspect for:

- pushed out pins
- corrosion
- Connect all the PCM connectors and make sure they seat correctly.
- Carry out the PCM self-test and verify the concern is still present.

Is the concern still present?

YES
INSTALL a new PCM. REFER to Flash Electrically Erasable Programmable Read Only Memory (EEPROM) Flash Electrically Erasable Programmable Read Only Memory (EEPROM), Programming the VID Block for a Replacement PCM.

NO
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.