SAAB WIS ONLINE

DTC P1160 RETURN SPRING FAILURE

DTC P1160 RETURN SPRING FAILURE

OUTLINE OF DIAGNOSIS

Judge NG when the valve does not move to the close direction with the motor power stopped and the valve open more than the default opening.

COMPONENT DESCRIPTION


(1)

Opener spring

(4)

Full closed stopper

(7)

DC motor

(2)

Return spring

(5)

Throttle valve

(8)

Main and sub throttle sensor

(3)

Intermediate stopper

(6)

Gear



ENABLE CONDITION

Secondary Parameters Enable Conditions
Throttle opening

OFF

Motor continuity

OFF



GENERAL DRIVING CYCLE


• Ignition switch ON → OFF

• Ignition switch OFF → ON (After clear memory only)


DIAGNOSTIC METHOD

Judge OK and clear the NG when the malfunction criteria below are completed.

Judgment Value

Malfunction Criteria Threshold Value
Opening variation after continuity is set to OFF

≥ 2°



Time Needed for Diagnosis: 600 milliseconds

Malfunction Indicator Light Illumination: Illuminates as soon as malfunction occurs.

DTC CLEAR CONDITION


• When the OK idling cycle was completed 40 times in a row

• When “Clear Memory” was performed (Only engine stop)


MALFUNCTION INDICATOR LIGHT CLEAR CONDITION


• When the OK driving cycle was completed 3 times in a row

• When “Clear Memory” was performed (Only engine stop)


FAIL SAFE

Fix the throttle opening to 6°.

ECM OPERATION AT DTC SETTING

Memorize the freeze frame data. (For test mode $02)