GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1997 🢒 Corvette 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Fog Lamp Indicator Inoperative

Fog Lamp Indicator Inoperative

Step

Action

Value(s)

Yes

No

1

Where you sent here from the Foglamp Diagnostic System Check?

Go to Step 2

Go to Foglamp Diagnostic System Check

2

Are both the LH/RH foglamps inoperative?

Go to Fog Lamps Inoperative

Go to Step 3

3
  1. Disconnect the BCM connector C1.
  2. Disconnect the fog lamp/rear compartment lid release switch (domestic) or the fog lamp switch (export) connector.
  3. Connect a DMM from the fog lamp/rear compartment lid release switch (domestic) or the fog lamp switch (export) connector terminal 5 to ground.
  4. Connect a fused jumper (10 A) from the BCM connector C1 terminal B4 to ground.
  5. Measure the voltage at the fog lamp/rear compartment lid release switch (domestic) or the fog lamp switch (export) connector terminal 5.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 5

Go to Step 4

4

Repair the open in CKT 34.

Is the repair complete?

Go to Foglamp Diagnostic System Check

5
  1. Disconnect BCM connector C3.
  2. Connect the DMM between the BCM connector C3 terminal B4 and the fog lamp/rear compartment lid release switch (domestic) or the fog lamp switch (export) connector terminal 3.
  3. Measure the resistance of CKT 183 between the BCM connector C3 terminal B4 and the fog lamp/rear compartment lid release switch (domestic) or the fog lamp switch (export) connector terminal 3.

Is the resistance within the specified values?

0-3ohms

Go to Step 7

Go to Step 6

6

Repair the open in CKT 183.

Is the repair complete?

Go to Foglamp Diagnostic System Check

7
  1. Reconnect the fog lamp/rear compartment lid release switch (domestic) or the fog lamp switch (export) connector.
  2. Connect a fused jumper (10 A) from the BCM connector C1 terminal B4 to ground.
  3. Connect a fused jumper (10 A) from the BCM connector C3 terminal B4 to ground.

Does the front fog lamp indicator illuminate?

Go to Step 9

Go to Step 8

8

Replace the fog lamp/rear compartment lid release switch (domestic) or the fog lamp switch (export).

Is the repair complete?

Go to Foglamp Diagnostic System Check

9

Replace the BCM.

Is the repair complete?

Go to Foglamp Diagnostic System Check