Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Sign in using an external account
Register Forgot Password?
Register Albums Search Today's Posts Mark Forums Read FAQ
Search
C5 Tech
Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by
Karl Chevrolet

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C6 Parts & Accessories
C5 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 08-08-2006, 10:57 PM   #1
bubs99
CF Senior Member
 
bubs99's Avatar
 
Member Since: Jul 2006
Location: Slidell Louisiana
Default Blower Motor not working

1999 6 spd with manual air - Had water back up in blower motor area. Motor stopped working, checked fuse ok replaced BM resistor still no blower motor. Hooked motor up directly to battery no spin. Took motor apart and cleaned brushes then tested directly to battery with jumpers motors spins. Connected to resistor lead still no blower. Is there a relay I am failing to find or control module ????Not sure what to do next.
Have power going into resistor but nothing coming out.

also cleaned out ac drain and all kinds of debris came out. sucked it out with a shop vac.


Please help....

Thanks

bub

Last edited by bubs99; 08-09-2006 at 07:30 AM.
bubs99 is offline   Reply With Quote
Old 08-08-2006, 11:27 PM   #2
Bill Dearborn
Tech Contributor

 
Bill Dearborn's Avatar
 
Member Since: Oct 1999
Location: Charlotte (formerly Endicott, NY) NC
Default

What year car do you have and do you have manual or automatic air? There are some differences.
Bill
Bill Dearborn is offline   Reply With Quote
Old 08-09-2006, 07:29 AM   #3
bubs99
CF Senior Member
 
bubs99's Avatar
 
Member Since: Jul 2006
Location: Slidell Louisiana
Default

1999 6 spd hardtop - manual air.
Thanks
bubs99 is offline   Reply With Quote
Old 08-09-2006, 06:26 PM   #4
bubs99
CF Senior Member
 
bubs99's Avatar
 
Member Since: Jul 2006
Location: Slidell Louisiana
Default Blower Motor not working

Anyone?????
bubs99 is offline   Reply With Quote
Old 08-09-2006, 06:55 PM   #5
SteveDotenMotorsports
Former Vendor
Cruise-In VII Veteran

 
SteveDotenMotorsports's Avatar
 
Member Since: Sep 2003
Location: Farmington/DeerPark CT/NY
Default

7/32" socket; pull the motor 3 screws, work it free by hand, spray wd-40; or new one for $80; i spent $2 on wd-40
SteveDotenMotorsports is offline   Reply With Quote
Old 08-09-2006, 07:02 PM   #6
bubs99
CF Senior Member
 
bubs99's Avatar
 
Member Since: Jul 2006
Location: Slidell Louisiana
Default

Quote:
Originally Posted by connecticut
7/32" socket; pull the motor 3 screws, work it free by hand, spray wd-40; or new one for $80; i spent $2 on wd-40
Motor spins I can't get it to come on. Tested it directly to battery. Replace resistor and checked fuses. Is there a relay I need to check or ???
bubs99 is offline   Reply With Quote
Old 08-09-2006, 10:39 PM   #7
Bill Dearborn
Tech Contributor

 
Bill Dearborn's Avatar
 
Member Since: Oct 1999
Location: Charlotte (formerly Endicott, NY) NC
Default

Blower Motor Relay
Mounted on the multi use relay and fuse bracket, above the Body Control Module (BCM).

Here is a diagnostic from the Service Manual.

Document ID# 376581
1999 Chevrolet/Geo Corvette


--------------------------------------------------------------------------------

Blower Motor Inoperative at Any Speed
Blower Motor Inoperative at Any Speed <<C60>> Step
Action
Value(s)
Yes
No

DEFINITION: Blower motor is inoperative at any selected speed.

1
Were you sent here from the HVAC System Check (C60)?
--
Go to Step 2
Go to HVAC System Check

2
Disconnect the blower motor connector.
Turn the ignition switch to the ON position.
Place the HVAC mode switch in the UPPER position.
Turn the blower switch to the LO position.
Connect a DMM between terminal A of the blower motor connector and a known good ground.
Measure the available voltage at terminal A of the blower motor connector.
Is the voltage within the specified values?
10.0 -14.0V
Go to Step 3
Go to Step 10

3
Connect a DMM between a good ground and terminal B of the blower motor connector.
Measure CKT 150 for continuity to ground.
Is the resistance to ground less than the specified value?
0.5ohms
Go to Step 4
Go to Step 5

4
Replace the blower motor. Refer to Blower Motor and Fan Replacement .

Is the repair complete?
--
Go to HVAC System Check
--

5
Disconnect the blower motor control module connector C2.
Connect a DMM between the blower motor control module connector C2 terminal 2 and a good ground.
Measure CKT 150 for continuity to ground.
Is the resistance to ground less than the specified value?
0.5ohms
Go to Step 6
Go to Step 7

6
Locate and repair an open or a high resistance in CKT 150 (blk wire) between the blower motor connector and the blower motor control module connector C2.

Is the repair complete?
--
Go to HVAC System Check
--

7
Disconnect the blower motor control module connector C1.
Connect a DMM between the blower motor control module connector C1 terminal E and a good ground.
Measure CKT 150 for continuity to ground.
Is the resistance to ground less than the specified value?
0.5ohms
Go to Step 8
Go to Step 9

8
Replace the blower motor control module. Refer to Blower Motor Resistor Replacement .

Is the replacement complete?
--
Go to HVAC System Check
--

9
Locate and repair an open or a high resistance in CKT 150 between the blower motor control module connector C1 and G202.

Is the repair complete?
--
Go to HVAC System Check
--

10
Disconnect the blower motor relay.
Connect a DMM between the blower motor relay connector terminal A1 and a good ground.
Measure CKT 150 for continuity to ground.
Is the resistance to ground less than the specified value?
0.5ohms
Go to Step 12
Go to Step 11

11
Locate and repair an open or a high resistance in CKT 150 between the blower motor relay connector and G202.

Is the repair complete?
--
Go to HVAC System Check
--

12
Connect a DMM between the blower motor relay connector terminal C2 and a good ground.
Turn the ignition switch to the ON position.
Measure the available voltage at the blower motor relay connector terminal C2.
Is the voltage within the specified values?
10.0 -14.0V
Go to Step 16
Go to Step 13

13
Check the HVAC MiniFuse® #18 for an open circuit.

Is the fuse open?
--
Go to Step 15
Go to Step 14

14
Locate and repair an open or a high resistance in CKT 41 between the blower motor relay connector and the instrument panel electrical center.

Is the repair complete?
--
Go to HVAC System Check
--

15
Locate and repair a short to ground in CKT 41 between the blower motor relay connector and the instrument panel electrical center.

Is the repair complete?
--
Go to HVAC System Check
--

16
Connect a DMM between the blower motor relay connector terminal C1 and a good ground.
Measure the available voltage at the blower motor relay connector terminal C1.
Is the voltage within the specified values?
10.0 -14.0V
Go to Step 20
Go to Step 17

17
Check the BLO MOT MaxiFuse® #49 for an open circuit.

Is the fuse open?
--
Go to Step 19
Go to Step 18

18
Locate and repair an open or a high resistance in CKT 1342.

Is the repair complete?
--
Go to HVAC System Check
--

19
Locate and repair a short to ground in CKT 1342.

Is the repair complete?
--
Go to HVAC System Check
--

20
Reconnect the blower motor control module connectors.
Reconnect the blower motor connector.
Connect a fused jumper wire between the blower motor relay connector terminal C1 and terminal A2.
Turn the blower motor fan switch to the low position.
Does the blower motor operate?
--
Go to Step 21
Go to Step 22

21
Replace the blower motor relay.

Is the replacement complete?
--
Go to HVAC System Check
--

22
Fused jumper wire is still connected between the blower motor relay connector terminal C1 and terminal A2.
Disconnect the HVAC Control Assembly connector C2.
Connect a DMM between the HVAC Control Assembly connector C2 terminal B and a good ground.
Measure the available voltage at the HVAC Control Assembly connector C2 terminal B.
Is the voltage within the specified values?
10.0 -14.0V
Go to Step 24
Go to Step 23

23
Locate and repair an open or a high resistance in CKT 42.

Is the repair complete?
--
Go to HVAC System Check
--

24
Connect the blower motor connector.
Connect the blower motor control module connectors C1 and C2.
Fused jumper wire is still connected between the blower motor relay connector terminal C1 and terminal A2.
Connect a fused jumper wire between terminal B and terminal H of the HVAC Control Assembly connector C2.
Does the blower motor operate?
--
Go to Step 25
Go to Step 26

25
Replace the HVAC Control Assembly. Refer to Control Assembly Replacement .

Is the replacement complete?
--
Go to HVAC System Check
--

26
Replace the blower motor control module. Refer to Blower Motor and Fan Replacement .

Is the replacement complete?
--
Go to HVAC System Check
--



--------------------------------------------------------------------------------
Document ID# 376581
1999 Chevrolet/Geo Corvette


Bill
Bill Dearborn is offline   Reply With Quote
Old 08-12-2006, 04:23 PM   #8
bubs99
CF Senior Member
 
bubs99's Avatar
 
Member Since: Jul 2006
Location: Slidell Louisiana
Default Blower motor working again

Thanks to Bill and the schematic he sent me I was able to trace my fan motor not working. Turned out to be the relay. But without the schematic I wouldn't have found which one it was. So thanks to you Bill for your responses.

Bub
bubs99 is offline   Reply With Quote
Old 08-12-2006, 04:23 PM
 
Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Reload this Page Blower Motor not working
 
 
 
Reply

Tags
1999, 94, blower, c5, c60, corvett, corvette, fan, heater, hvac, inop, motor, replace, replacement, working


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Heater blower motor OFF.....hot air from ducts while driving...... WeasleVette454 C3 Tech/Performance 14 07-01-2004 03:58 PM
high speed blower motor problems...please help... OkeeGuy C3 Tech/Performance 15 05-28-2004 01:42 PM
No "High" speed from the blower motor...help! a69vette C3 Tech/Performance 26 11-19-2003 12:43 PM
AC blower motor hi speed shoptek C3 Tech/Performance 11 02-24-2002 03:30 PM


All times are GMT -4. The time now is 07:56 AM.


Emails & Password Backup

Search Engine Friendly URLs by vBSEO 3.5.2