GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1997 🢒 Corvette 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Park Lamps Inoperative - Rear

All Rear Park Lamps Inoperative

Step

Action

Value(s)

Yes

No

1

Were you sent here from the Exterior Lights Diagnostic System Check?

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Go to Step 2

Go to Exterior Lights Diagnostic System Check

2
  1. Remove the LH license lamp bulb from its socket.
  2. Connect a DMM between the LH license lamp socket terminal A and ground.
  3. Move the headlamp switch to the PARK position.
  4. Measure the available voltage at the LH license lamp socket terminal A.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 3

Go to Step 4

3

Repair an open in CKT 150 between splice pack 400 and G401.

Is the repair complete?

--

Go to Exterior Lights Diagnostic System Check

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4
  1. Disconnect the connector C400.
  2. Connect a DMM between C400 terminal E and ground.
  3. Move the headlamp switch to the PARK position.
  4. Measure the available voltage at C400 terminal E.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 7

Go to Step 5

5
  1. Disconnect the connector C140.
  2. Connect a DMM between C140 terminal A and ground.
  3. Move the headlamp switch to the PARK position.
  4. Measure the available voltage at C140 terminal A.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 8

Go to Step 6

6
  1. Disconnect the underhood electrical center connector C3.
  2. Connect a DMM between C140 terminal A and the electrical center connector C3 terminal B12.
  3. Measure for continuity in CKT 9 between these two connectors.

Is CKT 9 continuous between these two connectors?

--

Go to Step 10

Go to Step 9

7

Repair a poor connection or an open in CKT 9 between the connector C400 terminal E and the rear park lamps.

Is the repair complete?

--

Go to Exterior Lights Diagnostic System Check

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8

Repair a poor connection or an open in CKT 9 between the connectors C140 terminal A and C400 terminal E.

Is the repair complete?

--

Go to Exterior Lights Diagnostic System Check

--

9

Repair a poor connection or an open in CKT 9 between the connector C140 terminal A and the underhood electrical center connector C3 terminal B12.

Is the repair complete?

--

Go to Exterior Lights Diagnostic System Check

--

10

Replace the underhood electrical center.

Is the repair complete?

--

Go to Exterior Lights Diagnostic System Check

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