Non start Hi justagues can I change the auto shutdown relay with another relay in the fuse box, for example ABS or A/C relay? as parts are difficult to get hold of as I am in spain. Was going to try distributor module? what do you think? many thanks for your help ps engine is 6 cylinder 4.0L engine type according to log book is G/S hope this helps barry

P0685 CHRYSLER - Auto Shutdown Relay Control Circuit Failure

Short or open in Auto Shutdown (ASD) relay circuit
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech Notes
Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.

P0688 CHRYSLER - Auto Shutdown Relay Control Circuit Low

The Front Control Module (FCM) has detected the supply voltage below an acceptable value
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech Notes
Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.

check wiring diagram for the 1995 Jeep Grand Cherokee radio?

The only relay I see that wire connected to is the auto shutdown relay. Below is a picture of the wiring diagram at the coils, the location of the box that the relay is located at (the power distribution center) & a fuse layout digram for the fuse box. Where the red arrow is, that's the auto shutdown relay and where the 2 yellow arrows are, is the main fuse for that relay you may want to check as well. Hope this helps.

check the fuses under the hood

P0685 DODGE - Auto Shutdown Relay Control Circuit Failure
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)

Possible causes - ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech notes Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. P0685 DODGE Description Short or open in Auto Shutdown (ASD) relay circuit

P0688 DODGE - Auto Shutdown Relay Control Circuit Low
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)

Possible causes - ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech notes Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. P0688 DODGE Description The Front Control Module (FCM) has detected the supply voltage below an acceptable value

It is the Auto Shutdown Relay located in the power distribution center under the hood, the black box with all the fuses and relays. Replace the relay, and check all the 30amp and 50 amp fuses. You might try removing the relay and reinstalling it first, to see if it will reset.

Cavity/ Fuse /Circuits
1/ 20 Amp Yellow/ Left High Beam Headlight
2/ 20 Amp Yellow/ Right High Beam Headlight
3/ 15 Amp Dk. Blue/ Adjustable Pedal
4/ 20 Amp Yellow/ Horn
5/ 25 Amp Clear/ Headlamp Washer - If Equipped
6/ 15 Amp Dk. Blue/ Front Control Module (FCM)
7/ 20 Amp Yellow/ Fog Lamp
8/ 15 Amp Dk. Blue/ Park Lamp
9/ 15 Amp Dk. Blue/ Non ABS Brakes
10/ 5 Amp Orange/ Starter
11/ 20 Amp Yellow/ Auto Shutdown/Powertrain Control Module (PCM)
12/ - -
13/ - -
14/ 25 Amp Clear/ Powertrain Control Module
15/ 20 Amp Yellow/ Injectors, Ignition Coils
16/ 15 Amp Dk. Blue/ Powertrain Control Module
17/ 30 Amp Pink/ Antilock Brake System (ABS) Valves
18/ 30 Amp Pink/ Windshield Wiper/Washer
19/ 50 Amp Red/ Radiator Fan
20/ 20 Amp Lt. Blue/ Starter
21/ 50 Amp Red/ ABS Pump Motor
22/ 40 Amp Green/ Radiator Fan High/Low
23/ 50 Amp Red/ High Intensity Lighting
24/ - -
25/ 30 Amp Pink/ Lighting Left High Beam/Right Low Beam
26/ 20 Amp Lt. Blue/ Transmission
27/ 30 Amp Pink/ Lighting Left Low Beam/Right High Beam
if this helps please rate 4 thumbs up.

hello i am trying to find where is the shut down relay loation on my 2000 caravan since it does not have the fuse box cover

There is a relay : but no button the relay is in the fuse box center by the drivers fender under the hood also check your fuses

I changed all the parts I mentioned and finally I decided to try the crank shaft sensor and if that didn't work I was going to replace the cam shaft sensor. Luckily the crank shaft sensor worked but only after I replaced all the other parts. But at least now it finally started.

Thsank you.