COMPONENT LOCATION
DESCRIPTION
GENERAL DESCRIPTION

The Engine control module (ECM) is installed in the passenger compartment.

The ECM is a solid state device that uses internal circuitry to process the input signals according to control algorithms.

A voltage regulator inside the ECM controls power supply to output transistor.

DTC DESCRIPTION

If the signal exceeds threshold value, the ECM judged this as a fault and DTC is set.

DTC DETECTING CONDITION

Item

Detecting Condition

Possible Cause

DTC Strategy

● Rationality check

●

Faulty ECM

Enable Conditions

● When Ignition switch is off

Threshold Value

● Engine < 500 rpm within 1.5

Diagnostic Time

● 0 sec.

MIL

Fuel Limit

Fuel Cut

EGR Off

● No

● No

● No

● No

MONITOR DTC STATUS
1.

Igintion " OFF ".

2.

Connect scantool and select Diagnostic Trouble Code(DTC).

3.

Clear DTC and then, Monitor DTC status.

4.

Is the DTC P1636 is retreived again ?

Substitute with a known-good ECM and check for proper operation.

If the problem is corrected, replace ECM and then go to "Verification of Vehicle Repair" procedure.

Fault is intermittent caused by poor contact in the sensor’s and/or ECM’s connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR

After a repair, it is essential to verify that the fault has been corrected.

1.

Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode and then clear DTC.

2.

Operate the vehicle within DTC Enable conditions in General information.

3.

Are any DTCs present ?

Go to the applicable troubleshooting procedure.

System is performing to specification at this time.

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