Highbeam indicator i
I have a 94 vette and my highbeam indicator often does not luminate on the instrument panel. Does the steering wheel position or dimmer switch has a bearing on this issue.
Burning Brakes
Joined: Nov 2005
Posts: 848
Likes: 1
From: 1992 LT1 6 speed Cayman Islands
Originally Posted by MRBILL1957
I have a similar problem, mine will illuminate but will stay illuminated even when i turne the brights off. what could be causing that?
I have this same problem on my 92 sometimes.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
The CCM controls the the highbeam indicator lamp. The highbeam lamp has 12 volts on it and the CCM completes the circuit to ground when commended. The command comes from the headlight highbeam dimmer switch lever which is input to CCM.
Possibility:
1) the bulb is bad or has a bad connection in instrument cluster.
2) Wiring to the CCM or instrument cluster, as in a connector
3) defective CCM (probably not)
4) Highbeam lever defective
The diagnostics for the CCM (short 4 and 12 on ALDL) can envoke a test mode and cycle (turn on and off) the highbeam lamp. Go to modual 1.4 test 05. This will help isolate the problem area as wheather the CCM is controlling the lamp correctly.
Possibility:
1) the bulb is bad or has a bad connection in instrument cluster.
2) Wiring to the CCM or instrument cluster, as in a connector
3) defective CCM (probably not)
4) Highbeam lever defective
The diagnostics for the CCM (short 4 and 12 on ALDL) can envoke a test mode and cycle (turn on and off) the highbeam lamp. Go to modual 1.4 test 05. This will help isolate the problem area as wheather the CCM is controlling the lamp correctly.
Last edited by pcolt94; Aug 3, 2006 at 10:39 PM.
