"VSC OFF" with codes C1207, C1227, C1340 (1 Viewer)

[gStorm]

Can anyone give me guidance on how to diagnose my "VSC OFF" light staying on with engine codes C1207, C1227, C1340? No other warning lights are on.

 

[Serge]

I think I got the same codes after timing belt job. A bunch of stuff including battery was unplugged. I reset them with an OBDII scanner and that did the trick.

 

[gStorm]

I reset the codes, and the "VSC OFF" light re-appeared as soon as I put the car in gear. I'd appreciate help getting this figured out.

 

[FXR UPR]

C1207 is Park Neutral Position sensor switch circuit
C1227 TRAC AND VSC Solenoid Circuit
C1340 Center Diff Lock Circuit.
Do you have a connector disconnected or a rodent problem?

 

[gStorm]

I've checked all 5 connectors on the ECU, and they are securely attached. If by rodent, you mean was a wire was chewed, that could easily be the case. My question is how to figure that out.

I'm trying to understand The diagnostic manual. I'm on DI-647 (an image is attached) where I'm checking the IG1 relay. The open/continuity is ok on my IG1's pins, so next it says, "Check for open circuit in harness and connector between IG1 No. 1 relay and combination meter (See page IN-36 )."

Can someone tell me how to check for that open circuit?

 

[gStorm]

Here's what I know after tracking down the C1227 and C1340 codes:

• my brake booster pins check out fine,
• harness from brake booster to both ECU and Engine Room Relay is good,
• harness is good from engine room J/B relay to ECU, and
• EXI at ECU has 12 V when in 4L.

I've tried to check harness from ECU to the RH J/B, but, man, that RH J/B board hard to get to.

I don't think the circuitry from the VSC OFF switch to the light is a problem, cuz the light doesn't come on until the tires start to move.

At this point, I would love from someone to come along and give me a short cut. If not, I'll continue inching my way through the diagnostic manual.

 

[tcrulz]

Sorry to liven up an old thread but can anyone tell me the location of IG1 No1 in the engine bay. I assume its under the main fuse block but it looks difficult to take apart. I have a ABS light on all the time but no fault codes on Scan gauge or when put in diagnostic mode. Help Please.

 

[gStorm]

It is in the engine room j/b r/b: