BCM Scan - anybody - help
Thread Starter
Teching In
Joined: Sep 2002
Posts: 2
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From: Harleysville, PA
BCM Scan - anybody - help Let me start out by saying I have no problem symptoms with the security system. I scanned the BCM yesterday, and along with the normal 12 and 55 codes, I got 25/35 DTC’s “Security Indicator Status”. Upon further review of the manual, it appears these codes are required for the security system to function properly, at least thats what it implies, but since they are called Diagnostic Trouble Codes, it seems it should indicate trouble. All of this leads me to wonder if I am interpreting this right.
Can anyone offer insight? Does everyone get these codes when they scan their BCM?
If you’d like to scan for Diagnostic Trouble Codes, or DTC’s: the BCM (Body Control Module - located under the passenger side instrument Panel – IP) controls all sorts of body mounted functions. You scan it by: turning the ignition to RUN, then to OFF; remove (radio) fuse #17 from the IP fuse Block (located on side of IP at drivers side door); turn ignition to ACCY for five seconds (BCM will beep), then to OFF, then immediately (within 1 second) back to ACCY, it will beep again. The SECURITY light on the IP will flash out codes by flashing and pausing, eg. One flash-pause-two-flashes is Code 12, which is what it will do three times, then any other codes each three times (that’s where I had 25 & 35), then a code 55 followed by two more indicating hardware and software configurations. Do this until code 12 repeats again, turn OFF the ignition, and replace Fuse 17. At no time should the engine run during the scan.
If you have any other DTC’s, I can look ‘em up in the manual for you. Let me know what you find.
Can anyone offer insight? Does everyone get these codes when they scan their BCM?
If you’d like to scan for Diagnostic Trouble Codes, or DTC’s: the BCM (Body Control Module - located under the passenger side instrument Panel – IP) controls all sorts of body mounted functions. You scan it by: turning the ignition to RUN, then to OFF; remove (radio) fuse #17 from the IP fuse Block (located on side of IP at drivers side door); turn ignition to ACCY for five seconds (BCM will beep), then to OFF, then immediately (within 1 second) back to ACCY, it will beep again. The SECURITY light on the IP will flash out codes by flashing and pausing, eg. One flash-pause-two-flashes is Code 12, which is what it will do three times, then any other codes each three times (that’s where I had 25 & 35), then a code 55 followed by two more indicating hardware and software configurations. Do this until code 12 repeats again, turn OFF the ignition, and replace Fuse 17. At no time should the engine run during the scan.
If you have any other DTC’s, I can look ‘em up in the manual for you. Let me know what you find.
I have a service vehicle light on my 01. It threw codes 12, 25, 31, 33, 35, 55, 26 in that order. Can you give me the code breakdown? Also is there any way to just clear out the memory and start from scratch?
Teching In
Joined: Feb 2004
Posts: 23
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From: Sweden
DTC Description
12 ......................................... Diagnostic System Check
21/31 ............... Courtesy Lights Feed Circuit Shorted To Ground
22/32 ............ Courtesy Lights Return Circuit Shorted To Battery
23/33 ............ Retained Accessory Power (RAP) Circuit Shorted To
Ground Or Battery
24/34 ..... Seat Belt Indicator Circuit Shorted To Ground Or Battery
25/35 (1) ................................ Security Indicator Status
41 (2) ................................. Last Message Received Valid
42 (2) ............................... Last Message Received Invalid
43 (2) ................... Last Message Received With Sumcheck Error
44 (2) ................. Last Message Received With Encryption Error
45 (2) ................... Receiver Processing In 20-Second Lock-Out
55 ..................................... Begin Configuration Display
(1) - On vehicles equipped with Content Theft Deterrent (CTD)
system.
(2) - On vehicles equipped with Remote Keyless Entry (RKE) system.
DTCs are automatically cleared after they are displayed. To
display DTCs again, an RKE transmitter button must be pushed
again.
12 ......................................... Diagnostic System Check
21/31 ............... Courtesy Lights Feed Circuit Shorted To Ground
22/32 ............ Courtesy Lights Return Circuit Shorted To Battery
23/33 ............ Retained Accessory Power (RAP) Circuit Shorted To
Ground Or Battery
24/34 ..... Seat Belt Indicator Circuit Shorted To Ground Or Battery
25/35 (1) ................................ Security Indicator Status
41 (2) ................................. Last Message Received Valid
42 (2) ............................... Last Message Received Invalid
43 (2) ................... Last Message Received With Sumcheck Error
44 (2) ................. Last Message Received With Encryption Error
45 (2) ................... Receiver Processing In 20-Second Lock-Out
55 ..................................... Begin Configuration Display
(1) - On vehicles equipped with Content Theft Deterrent (CTD)
system.
(2) - On vehicles equipped with Remote Keyless Entry (RKE) system.
DTCs are automatically cleared after they are displayed. To
display DTCs again, an RKE transmitter button must be pushed
again.
