P1438 Troubleshooting - Insight Central: Honda Insight Forum
 
Go Back   Insight Central: Honda Insight Forum > 1st Generation Honda Insight Forum > Problems and Troubleshooting

Insightcentral.net is the premier Honda Insight Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 01-06-2019, 11:46 PM   #1 (permalink)
Junior Member
 
Join Date: Jan 2019
Location: Wisconsin
Posts: 15
Default P1438 Troubleshooting

Hi all. I'm new to the Insight world. I just recently picked up a 2001 CVT with 140k. The owner stated it did need a new battery, along with brakes. The car was likely not used much recently, as brakes were rusty etc. I took the car on a test drive and there were no fault lights (his ad stated it did however). I checked and all IM readiness was good, so it must have been driven some successfully without an IMA fault. I bought and drove the car home (about 75 miles when all said and done). IMA seemed to charge/discharge as expected- it still had the original pack.

Fast forward a week or so - put plates on the car and took it on a drive. It was very wet outside. IMA light came on after about 15 minutes of driving. I figured this was due to the battery pack so I didn't even check the code. It was already my intention to buy a replacement pack with new cells.

I installed the pack, and upon starting the car, the IMA fault was immediate. I get code P1438. That is the only code present doing a scan (generic scanner). As others have exhibited, I did have a bit of water in the spare tire well.

My question is: Where do I start to diagnose this? I found some info on the forum, but I am unfamiliar with which modules is which, the names of the various components, etc. This is my first foray into a hybrid.

Any help would be appreciated.

Kris
bagged2drag is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-07-2019, 01:47 AM   #2 (permalink)
Lifetime Member
 
S Keith's Avatar
 
Join Date: Oct 2014
Location: Phoenix, AZ area
Posts: 3,409
Default

blink the codes

99mpg dot com/categories/insight/readingtheblinkcod/
__________________
'05 G1 CVT w/192K mi as of 7/2016; '02 G1 CVT w/182K mi as of 7/2016 (P1449 HR pack)

To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.
S Keith is online now   Reply With Quote Quick reply to this message
Old 01-07-2019, 09:23 AM   #3 (permalink)
Junior Member
 
Join Date: Jan 2019
Location: Wisconsin
Posts: 15
Default code

I pulled the blink code this morning, as I had found instructions prior to going to sleep yesterday. The only code that is popping up is 38.

Kris


Quote:
Originally Posted by S Keith View Post
blink the codes

99mpg dot com/categories/insight/readingtheblinkcod/
bagged2drag is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-07-2019, 10:20 AM   #4 (permalink)
Moderator
 
Join Date: May 2013
Location: Upland, CA/Covina, CA
Posts: 1,445
Default

It appears the code is for the MCM, the silver box on top of the Hybrid battery on the right side it has 4 electrical plugs toward the front of the car.
Please double check the connections and be sure they are plugged in and there are no bent pins or corrosion in the plugs/MCM. Then clear the codes and see if if the code comes back.

You say you replaced the Hybrid pack, was it new sticks, and who supplied it?

Scott
__________________
Silver 2000, MT 160,000mi, RE92's, S2000 leather steering wheel
Silver 2002,CVT 187,000mi
Blue 2002,MT 126,000mi, RE92's, S2000 leather steering wheel
Red 2002,MT 196,000mi, RE92's, new rear springs, GAZ shocks
Citrus 2000,MT 182,000mi, MIMA, RE92's, S2000 leather steering wheel, Japanese seat covers.
Simple grid charger SC03
New rear coil springs available, PM me.
One piece aluminum underbody panels.
PayPal:
To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.
KLR3CYL is offline   Reply With Quote Quick reply to this message
Old 01-07-2019, 10:31 AM   #5 (permalink)
Administrator
 
Join Date: Dec 2005
Location: Hull. East Riding of Yorkshire.
Posts: 10,425
Send a message via MSN to retepsnikrep
Default P1438

That might be bad news.

Open up the IPU (rear compartment) and measure the voltage between
MCM connector A Pin 13 FOT green/white wire and
MCM connector A pin 24 GND brown/yellow wire

It should be ~5v with ignition on.

Try unplugging and replugging the MCM connector A as Scott suggests in case you have pin corrosion or dampness etc...

If it still faults immediately after clearing the system with a proper 12v battery disconnect, then you likely have an IGBT fault or bad connection inside the MDM.

See this YT video..


Lots of scrap MDM's in breakers yard in the US so not the end of the world.
__________________

To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.

ObdIIc&c, Imac&c, ImaBoost, Current Hacks available. Enqs to 150mpg[at]gmail.com

Last edited by retepsnikrep; 01-07-2019 at 10:34 AM.
retepsnikrep is offline   Reply With Quote Quick reply to this message
Old 01-07-2019, 10:59 AM   #6 (permalink)
Junior Member
 
Join Date: Jan 2019
Location: Wisconsin
Posts: 15
Default

Thank you, I will meter out those connections (hopefully) tonight after I get home from work, after inspecting the pins. I did double check to ensure it was seated in the socket a couple of times, and there was nothing glaring at me as far as corrosion either, but I will take a much closer inspection today. Would any of the infamous ground straps be suspect in this case? Also, what is (or where is) the IGBT?


I bought a rebuilt pack with brand new sticks from Best Hybrid Batteries in Illinois. He offered a 3 year unconditional mileage warranty, and he was only a couple hours away.
bagged2drag is offline   Reply With Quote Quick reply to this message
Old 01-07-2019, 11:05 AM   #7 (permalink)
Administrator
 
Join Date: Dec 2005
Location: Hull. East Riding of Yorkshire.
Posts: 10,425
Send a message via MSN to retepsnikrep
Default

Quote:
Originally Posted by bagged2drag View Post
Would any of the infamous ground straps be suspect in this case? Also, what is (or where is) the IGBT?
Always worth checking the grounds but unlikely to be the case IMHO.

Check my YT channel and videos.

The IGBT is in the MDM, which is inside the rear compartment.

__________________

To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.

ObdIIc&c, Imac&c, ImaBoost, Current Hacks available. Enqs to 150mpg[at]gmail.com
retepsnikrep is offline   Reply With Quote Quick reply to this message
Old 01-07-2019, 11:07 AM   #8 (permalink)
Junior Member
 
Join Date: Jan 2019
Location: Wisconsin
Posts: 15
Default

Thanks again. I will follow up after taking a look again.
bagged2drag is offline   Reply With Quote Quick reply to this message
Old 01-07-2019, 12:18 PM   #9 (permalink)
Junior Member
 
Join Date: Jan 2019
Location: Wisconsin
Posts: 15
Default mcm or mdm

...just a follow up to the posts above. When I check for the 5v, if I do not get 5v, I can deduce that the MDM is the culprit. If I do get 5v, I can deduce the MCM is the culprit (both assuming connections are ok). Is that correct?
bagged2drag is offline   Reply With Quote Quick reply to this message
Old 01-07-2019, 05:32 PM   #10 (permalink)
Administrator
 
Join Date: Dec 2005
Location: Hull. East Riding of Yorkshire.
Posts: 10,425
Send a message via MSN to retepsnikrep
Default

Very likely..
__________________

To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 2 or greater. You currently have 0 posts.

ObdIIc&c, Imac&c, ImaBoost, Current Hacks available. Enqs to 150mpg[at]gmail.com
retepsnikrep is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Tags
p1438

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Insight Central: Honda Insight Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 12:04 AM.



Powered by vBulletin® Copyright ©2000 - 2019, vBulletin Solutions, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.