Dodge

Dodge Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Dodge

P0688 new tipm 08 ram gas

Customer Question
p0688 new tipm 08 ram gas
Submitted: 6 months ago.Category: Dodge
Ask Your Own Dodge Question
Answered in 6 minutes by:
5/11/2017
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Dodge
Satisfied Customers: 4,148
Experience: Owner at Carolina Auto Service &Sales , 20 years Experience in Foreign & Domestic vehicles
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Ask Your Own Dodge Question
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

Hey how are you

we have 4 possible cause here, one of them is the TIPM you already chnaged, but there is a troubleshoot to follow , can yo tell me if that was perfomed prior to TIPM replacement

Please read below and click on link to view diagrams

2008 Dodge or Ram Truck RAM 2500 Truck 2WD V8-5.7L

Save Article

P0688-AUTO SHUTDOWN SENSE CIRCUIT LOW

Zoom and Print Options

For a complete wiring diagram Refer to Diagrams/Electrical.

- When Monitored:
With ignition key on. Battery voltage greater than 10 volts.

- Set Condition:
No voltage sensed at the PCM when the ASD relay is energized. One Trip Fault. Three good trips to turn off the MIL.

Zoom and Print Options

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See: Computers and Control Systems > Initial Inspection and Diagnostic Overview > Pre-Diagnostic Troubleshooting Procedure .

Diagnostic Test

1. ACTIVE DTC
NOTE: If any O2 SENSOR HEATER CIRCUIT HIGH DTCs set along with P0688-AUTO SHUTDOWN RELAY SENSE CIRCUIT LOW, all of the O2 Sensor Heater Control circuits need to be checked for a short to battery voltage.

NOTE: If any of the following component DTC(s) have set along with P0688, diagnose them first before continuing.Ignition Coil(s)Fuel Injector(s)ASD ControlASD Control Output (TIPM DTC)

Ignition on, engine not running.
With a scan tool, select View DTCs.
Is the DTC Active at this time?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. See: Computers and Control Systems > Component Tests and General Diagnostics > Intermittent Condition

2. ASD CONTROL OUTPUT OPERATION FROM THE TIPM

Zoom and Print Options

Turn the ignition off.
Disconnect the C1 and C3 PCM harness connectors.

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

Ignition on, engine not running.
With a 12-volt test light connected to ground, probe both of the (K342) ASD Control Output circuits in the appropriate terminals of special tool #8815.
Using the scan tool in the TIPM, actuate the ASD Control Output.
Does the test light illuminate brightly and flash on an off?

Yes

-
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
If OK, replace the PCM. See: Engine Control Module

No

- Go To 3

3. (K342) ASD CONTROL OUTPUT CIRCUIT(S) OPEN

Zoom and Print Options

Turn the ignition off.
Disconnect the C1 TIPM harness connector.

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

Measure the resistance of both the (K342) ASD Control Output circuits from the C1 TIPM harness connector to the appropriate terminals of special tool #8815.
Is the resistance below 5.0 ohms?

Yes

- Go To 4

No

- Repair the open in the (K342) ASD Control Output circuit(s).
- Perform the POWERTRAIN VERIFICATION TEST. See: A L L Diagnostic Trouble Codes ( DTC ) > Verification Tests > Powertrain Verification Test

4. (K342) ASD CONTROL OUTPUT CIRCUIT(S) SHORTED TO GROUND

Zoom and Print Options

Measure the resistance between ground and both of the (K342) ASD Control Output circuits in the C1 TIPM harness connector.
Is the resistance below 100 ohms?

Yes

- Repair the short to ground in the (K342) ASD Control Output circuit(s).
- Perform the POWERTRAIN VERIFICATION TEST. See: A L L Diagnostic Trouble Codes ( DTC ) > Verification Tests > Powertrain Verification Test

No

- Go To 5

5. TOTALLY INTEGRATED POWER MODULE
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the related TIPM and the Powertrain Control Module (PCM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the TIPM and Powertrain Control Module connectors.
Refer to any Technical Service Bulletins that may apply.
Were there any problems found?

Yes

- Repair as necessary.
- Perform the BODY VERIFICATION TEST - VER 1. See: A L L Diagnostic Trouble Codes ( DTC ) > Verification Tests > Body Verification Test

No

- Replace and program the Totally Integrated Power Module.
- Perform the BODY VERIFICATION TEST - VER 1. See: A L L Diagnostic Trouble Codes ( DTC ) > Verification Tests > Body Verification Test

© 2017 ALLDATA, LLC. All Rights Reserved. Terms of Use (Version 2.0.13851)

are you looking at fixing this yourself or looking to know the most possible cause of this issue and taking it to repair shop for the work ?

Do you have any prior experience in electrical troubleshooting and testing with a test light for power & ground ?

Do you have a test light & or power probe for testing ?

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

9b88e2e9-bc4f-43ff-b82d-...gif9b88e2e...gifedd05ed2-f5b8-4c3d-ba01-...gifedd05ed...gifee2be5e7-666b-4576-b585-...gifee2be5e...gif43cbf81d-d581-4fd0-8654-...gif43cbf81...gif1d69d1de-4003-4271-bdb7-...gif1d69d1d...gif
Ask Your Own Dodge Question
Customer reply replied 6 months ago
professional shop. Has had issue for lighting and quit the other day with new code. Replaced with a Dorman pre-programmed unit . lighting fine but still retains p0688.
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

Did you perform test above i sent you ,you need to ?

so dorman fixed lighting but still p0688 I m i correct on that ?

what is the truck doing , was this fault code exist before the unit replacement and was it replaced to get get rid of the fault code or fix lighting issue

Ask Your Own Dodge Question
Customer reply replied 6 months ago
as long as I needed to replace the module for the lighting code thought it might solve ASD circuit issue also. Haven't performed test yet. Without being a Chrysler dealer I do not have breakout harness so I'm assuming back probe connectors track
Customer reply replied 6 months ago
Correct?*
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

Yes Sir you are correct , I totally understand ,but that will be next step, back probe them if no equipment available to you

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Ask Your Own Dodge Question
Customer reply replied 6 months ago
my Snap-On scanner will not allow me to toggle the ASD circuit. Cranking should produce the same results correct? I have no light on eithter circuit.
Customer reply replied 6 months ago
just noticed fuel pump runs continuously key on also
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

You have short to ground completing the circuit ,if stuff staying on , unplug pcm, does it quit ?

Ask Your Own Dodge Question
Customer reply replied 6 months ago
quits when I unplug C1
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

Inspect the pins for any burned ,broke bend making poor connection

Pin Circuit Description 1 K98 18DB/YL COIL CONTROL NO. 8 2 - - 3 K97 18DB/YL COIL CONTROL NO. 7 3 K97 18BR COIL CONTROL NO. 7 4 K28 18BR/LB INJECTOR CONTROL NO. 8 5 K26 18BR/YL INJECTOR CONTROL NO. 7 6 - - 7 - - 8 - - 9 Z130 16BK/BR GROUND 10 A918 16RD FUSED B(+) 11 F202 20PK/GY FUSED IGNITION SWITCH OUTPUT (RUN-START) 12 F1 20PK/WT FUSED IGNITION SWITCH OUTPUT (OFF-RUN-START) 13 - - 14 - - 15 - - 16 - - 17 - - 18 Z131 16BK/DG GROUND 19 Z951 16BK/YL GROUND 20 G6 16VT/GY OIL PRESSURE SIGNAL 21 - - 22 - - 23 - - 24 A804 18RD/GY GEN SENSE 25 - - 26 - - 27 F856 20YL/PK 5 VOLT SUPPLY 28 K452 20BR/LB MDS SOL CONTROL NO. 4 29 A918 16RD FUSED B(+) 30 T751 20YL IGNITION START 31 K141 20DB/YL O2 1/2 SIGNAL 32 K902 20BR/DG O2 RETURN (UPSTREAM) 33 K243 20BR O2 2/2 SIGNAL 34 D65 20WT/LG CAN C BUS (+) 35 D64 20WT/LB CAN C BUS (-) 36 - - 37 - - 38 K342 16BR/WT ASD CONTROL OUTPUT

Ask Your Own Dodge Question
Customer reply replied 6 months ago
the pins all look fine.
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

Okay then change pcm, if you think they look fine,but that is not how we test them .lol

Ask Your Own Dodge Question
Customer reply replied 6 months ago
I totally agree about the testing but given the situation what's a guy supposed to do??????
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

You change the PCM and take a chance .

The TIPM and PCM is the most common ,rare we have wiring issue,usualy people messed with it wirst and you will have wiring problem

i know that is not the answer you want ,I hope you appreciate that i can not tell you yes change this & be 100 % because it will be a guess on my part and you throwing parts at it

Chad

,

Ask Your Own Dodge Question
Customer reply replied 6 months ago
processors for this one from Mopar is only 4:39 so it's worth the risk.
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

yes I agree .lol

good luck with it

If more help is needed, use the reply tab to continue our conversation.
Please kindly rate Me ,Your 5 Star Rating is Much Appreciated.

If you feel I have not been helpful Please DO NOT RATE ME BAD OR POOR (1 or 2 stars) ,
You can always ask me again or I can opt out of your question & open it for another expert
that will provide you with more or better assistance on this issue

Please keep in mind that when you rate me , it does not end our conversation.

you can always come back to this conversation and ask me any follow up question you may have on this issue

(you can copy this link page & paste it in your browser when ready and it will open up our conversation again)

Thank You
Chad Farhat
ASE Certfied Technician

Ask Your Own Dodge Question
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

Keep me updated

I m online here a lot

Chad

Ask Your Own Dodge Question
Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Dodge
Satisfied Customers: 4,148
4,148 Satisfied Customers
Experience: Owner at Carolina Auto Service &Sales , 20 years Experience in Foreign & Domestic vehicles

Chad Farhat is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP.

TOM WHITTAKERUSA

Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless!

Rev. Jerry BaysingerHolts Summit, Mo

I recently asked a question about my 2005 dodge ram, and I just wanted to let my Expert know that he hit the nail squarely on the head with his answer. I wanted to thank him again.

GregPittsburgh, PA

Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless!

JerryHolts Summit, MO

I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat.

StanSayre, PA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

< Previous | Next >

Meet the Experts:

Jerry

Jerry

Master Mechanic

1,754 satisfied customers

ASE Master tech, 30 years exp. troubleshooter, driveability tech

Chris

Chris

Shop Foreman

6,613 satisfied customers

Dodge/Cummins and Chrysler Certified Master Tech

Mopar Certified

Mopar Certified

Dodge Technician

5,931 satisfied customers

24 Year Chrysler/Dodge Certified Specialist

moparfl

moparfl

ASE Certified Technician

3,292 satisfied customers

ASE Master Tech Gold level Chrysler Status 30 years dealership exp

Dodgerench

Dodgerench

ASE Certified Technician

2,809 satisfied customers

30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist

Tim Mohr

Tim Mohr

ASE MASTER TECH

2,298 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Don - Mo Lurch

Don - Mo Lurch

Aftermarket & Factory Electronics

1,562 satisfied customers

Cert. Dodge & Chrysler Warnty, Heavy Line Mech, Mobile Electronics. Sales, Installation & Repair for 30 years

< Previous | Next >

Related Dodge Questions
I have a Dodge Ram 2500 Laramie 1997 with a Cummins
I have a Dodge Ram 2500 Laramie 1997 with a Cummins turbo-diesel engine. Some years ago I had to change the batteries a couple of times cause something was draining them, so they became dead. Last yea… read more
Curtis
Curtis
Vocational, Technical or Trade Scho
1,673 satisfied customers
My 2010 ram 2500 Will not start... no lights, radio or
My 2010 ram 2500 Will not start... no lights, radio or anything. When connected to the charger, it only gives me a light what the mileage normally shows, reading no fuse.… read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
1999 ram 2500 5.9 ltr turns over OK but misfires and will
1999 ram 2500 5.9 ltr turns over OK but misfires and will not start. Has 40psi fuel pressure. No water in gas. Replaced battery, plugs, plug cables, distributor cap, rotor, and plate, and substituted … read more
Dodgerench
Dodgerench
ASE Certified Technician
Vocational, Technical or Trade Scho
2,809 satisfied customers
Thought it was a starter issue. '97 ram 2500 12 valve
thought it was a starter issue JA: When you turn the key, do you get a single loud click, or a series of rapid ones? Customer: yes JA: What is the model/year of your Dodge? Customer: '97 ram 2500 12 v… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
2016 Dodge Ram 2500 6.4 hemi. Vin#3c6ur5cj8gg324805. Where
2016 Dodge Ram 2500 6.4 hemi. Vin#3c6ur5cj8gg324805. Where is the ambient temp sensor located. I️be like around the mirror housing and don't see it.… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
2007 Dodge Ram 2500 5.7L engine When the vehicle is warmed
2007 Dodge Ram 2500 5.7L engineWhen the vehicle is warmed up and running for a while, just sitting at an idol the vehicle stumbles in stalls. The fuel pressure is good when this happens and there are … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
2016 ram 2500 diesel fan clutch won't disengage. Fan is
2016 ram 2500 diesel fan clutch won't disengage. Fan is always engaged. … read more
Chris
Chris
Shop Foreman
6,613 satisfied customers
2001 dodge ram 2500 diesel, fuel sending unit is not
2001 dodge ram 2500 diesel, fuel sending unit is not working. Things I tried. pulled fuel tank and pulled sending unit out and checked voltage, (less than a volt), checked blue and whit wire at C3 at … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
How do you adjust the power driver seat in a 2003 ram 2500.
how do you adjust the power driver seat in a 2003 ram 2500 … read more
Chris
Chris
Shop Foreman
6,613 satisfied customers
Is this going to cost me money? 2006 ram 2500 diesel,
both batteries keep being drained within a few hours. We serviced the air and have had this issue since then … read more
Matt
Matt
Engineer
Bachelor\u0027s Degree
5 satisfied customers
2004 dodge ram 2500 5.9 cummins. feels like it is cutting
2004 dodge ram 2500 5.9 cummins. feels like it is cutting out under load at mostly highway speed. replaced both fuel pumps, new fuel filter. original high pressure pump. thinking about changing fuel f… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
I have a 2011 ram 2500 cummins it through. P0087 code for
Hello i have a 2011 ram 2500 cummins it through. P0087 code for the fuel rail pressure sensor so i replaced it started up and semmed to loop a little at idle ran for two days running ok still looping … read more
Brad
Brad
Technician at Dodge Dealership
Vocational, Technical or Trade Scho
12 satisfied customers
2003 dodge ram 2500 RWD, replacing the old wheeling bearing
2003 dodge ram 2500 RWD, replacing the old wheeling bearing hub, all bolts are out. Hub won't come out, have tried every trick on the net. How do I get that out? … read more
Dan
Dan
Dealership Technician
183 satisfied customers
I have a 2007 dodge ram 2500 diesel truck with 2 batteris
i have a 2007 dodge ram 2500 diesel truck with 2 batteris and today the battery on the passenger side got very hot and blew tha cap off so is the altenator bad ? i would think the voltage regulator is… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
2003 Dodge Ram 2500 cummins..lampout light and chime comes
2003 Dodge Ram 2500 cummins..lampout light and chime comes on when I use my turn signals...This happens only with the lights turned on at night. … read more
Chris
Chris
Shop Foreman
6,613 satisfied customers
2007 dodge ram 2500 6.7. Just installed rebuilt alt. not
2007 dodge ram 2500 6.7. Just installed rebuilt alt. not charging. check gauges light on … read more
Gabriel Grey
Gabriel Grey
Master Service Technician
Associates
192 satisfied customers
Ignition coil pack 5 is throwing a code and it running
Ignition coil pack 5 is throwing a code and it running rough..that's the only code it's thrown..I'm trying to find out what the colors on the PCM are and what plug for that so I can re-wire it. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Are the headlights on my 2016 ram 2500 supposed to come on
Hello, are the headlights on my 2016 ram 2500 supposed to come on automatically during daylight? … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x