CHEROKEE:The Automatic Shut Down relay:Cherokee:

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A. Here is how to test the ASD relay and wiring.

RELAYS-OPERATION AND TESTING:

The following operations/tests apply to these relays only:

Automatic Shutdown (ASD) , Fuel Pump and Ballast Bypass. For operations/tests on all other relays refer to the appropriate test.

OPERATION:
The relay terminal numbers can be found on the bottom of the relay. 
Terminal number 30 is connected to battery voltage and can be switched or B + (hot) at all times. 
Terminal number 87A is connected (a circuit is formed) to terminal 30 in the de-energized (normally OFF) position. 
Terminal number 87 is connected (a circuit is formed) to terminal 30 in the energized (ON) position. Terminal number 87 then supplies battery voltage to the component being operated. 
Terminal number 86 is connected to a switched power source. 
Terminal number 85 is grounded by the Engine Controller. 

TESTING:
Remove relay before testing. 
Using an ohmmeter, perform a resistance test between terminals 85 and 86. Resistance value (ohms) should be 75 ±5 ohms for resistor equipped relays. 
Connect the ohmmeter between terminals number 87A and 30. Continuity should be present at this time. 
Connect the ohmmeter between terminals number 87 and 30. Continuity should not be present at this time. 
Use a set of jumper wires (16 gauge or smaller). Connect one jumper wire between terminal number 85 (on the relay) to the ground side (-) of a 12 Volt power source. 
Attach the other jumper wire to the positive side (+) of a 12V power source. Do not connect the jumper wire to relay at this time. 
CAUTION: Do not allow the ohmmeter to contact terminals 85 or 86 during these tests. Damage to ohmmeter may result. Attach the other jumper wire (12V +) to terminal number 86. This will activate the relay. Continuity should now be present between terminals number 87 and 30. Continuity should not be present between terminals number 87A and 30. 
Disconnect jumper wires from relay and 12 Volt power source. 
Attach the other jumper wire (12V +) to terminal number 86. This will activate the relay. Continuity should now be present between terminals number 87 and 30. Continuity should not be present between terminals number 87A and 30. 
Disconnect jumper wires from relay and 12 Volt power source. 

If continuity or resistance tests did not pass replace relay.

The Powertrain Control Module (PCM) and connector are located in the engine compartment, mounted to the inner fender, next to the air cleaner housing.
DTC 11 - No reference signal during engine cranking. No camshaft reference signal was detected during engine cranking. 
DTC 12 - Battery disconnect. Battery input to PCM disconnected during last 50 key starts. 
DTC 42 - ASD relay control circuit. An open or shorted condition detected in the auto shut down relay circuit.

 

 

 

f:id:TAS-net:20190612062952p:plain

 

 

 

 

 

 

 

 

 

 

 コメント(3)

     

顔アイコン

ダッジバンでこのあたりのリレーが原因のエンスト、始動不良がありましたね~ 。

端子抜けも時々あるらしいです。←取引先ではよくあるそうですが当社ではまだありません。

2010/2/16(火) 午前 9:54g-nakajima ]返信する

 

 

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11-06-2007, 03:53 PM #1 whitejeep96zj Registered User Join Date: Dec 2005 Location: The Boro, TN Posts: 35 Profile Gallery Classifieds iTrader Rating ASD relay...what triggers it. So my jeep has just started to die rand

2009/5/31(日) 午後 4:35 [ 車QF ]

    
cardiofrequencemetre

CHEROKEE:The Automatic Shut Down relay - 車QF - Yahoo!ブログ

2012/12/8(土) 午後 3:42 [ cardiofrequencemetre ]

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