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1295 code TCS troubles

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Old May 11, 2010 | 09:35 PM
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From: AUGUSTA GEORGIA
Default 1295 code TCS troubles

Hey guys.............I installed leds 3rd break and tail lights....I was aware of of (hyper-flashing) I can deal wit that.... no problems......until....I turn my lights on......TCS warning light comes on cruse control won't work and code 1295!!!!!! but only when I turn on head lights on?
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Old May 12, 2010 | 01:37 AM
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It could be that you didnt reconnect everything properly. I'd start by rechecking connections. You may for some reason be producing a low voltage from the LEDs???? I'm not an LED expert though. Maybe there's something specific to the LED fit. Radioflyer's the real guru. You might want to drop him a PM.

Here's the troubleshooting guide from the Shop Manual. It shows the why and the what but doesn't really help with a fix. I'd say it has to be a connection/voltage issue rather than EBCM problems.

Document ID# 670726
2002 Chevrolet Corvette
DTC C1295
Circuit Description

The electronic brake control module (EBCM) sources 5 volts on the stop lamp switch signal circuit when the stop lamp switch is inactive. The voltage is supplied a ground path through the stop lamp bulbs.
Conditions for Running the DTC

The ignition is ON.
Conditions for Setting the DTC

The stop lamp switch input voltage is between 1.87 volts and 5.03 volts for 2 seconds.
Action Taken When the DTC Sets

If equipped, the following actions occur:

* The EBCM disables the TCS/VSES for the duration of the ignition cycle.
* The Traction Control and Active Handling indicator turns ON.
* The DIC displays the following messages:
o Service Traction System
o Service Active Handling
* The ABS remains functional.

Conditions for Clearing the DTC

* The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

Possible causes of this DTC are the following conditions:

* A signal circuit of the stop lamp switch is open.
* The stop lamp switch is misadjusted.
* Verify proper stop lamp switch operation using the data list of the scan tool. As the brake is applied, the data list displays the stop lamp switch ON within 2.54 cm (1 in) of travel.
* All brake lamps are open.
* All brake lamp grounds are open.
* Circuit has a wiring problem, terminal corrosion, or poor connections.

* Loose or corroded EBCM ground or ECM ground.
* An internal EBCM problem.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

3.

This DTC detects an open stop lamp switch signal circuit from the stoplamp side of the splice pack to the EBCM.
4.

The EBCM sources 5 volts on the stop lamp switch signal circuit. This small voltage has a ground path through the stop lamp bulbs. This DTC sets if the path to ground is open.

Last edited by DeeGee; May 12, 2010 at 01:43 AM.
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Old May 12, 2010 | 05:34 PM
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