6522370

DPS visual inspection

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect DPS connector.

(3)

Check DPS terminals for corrosion and contamination.

(4)

Check (1)connecting condition of DPS and pressure sensing hose, (2)exhaust gas pressure leakate, (3)miss connection of pressure sensing hose (reverse connection) is detected.

(5)

Is DPS related problem detected?

YES

If needed, replace DPS or pressure sensing hose and go to "Verification of Vehicle Repair".

Go to "2. Monitor DPS signal waveform" as follows.

Monitor DPS signal waveform

(1)

IG KEY "ON", ENGINE "OFF"

(2)

Connect DPS connector.

(3)

Connect oscilloscope to DPS connector terminal 2.

(4)

After warming engine up, monitor the waveform at idle and during acceleration.

Specification : Refer to "Signal Waveform & Data" of "General Information".

note

As accelerating, DPS signal output voltage does not vary too much. Even when accelerator pedal is fully depressed, the signal voltage fluctuates just a little bit like "Fig. 2". However, the more CPF is used, the more waveform fluctuates.

(5)

Is DPS signal waveform is similar to the waveform of "Signal Waveform & Data"?

YES

Go to "Verification of Vehicle Repair".

Replace DPS and go to "Verification of Vehicle Repair".