GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2000 🢒 Intrigue 🢒 Body and Accessories 🢒 Data Link Communications 🢒 Scan Tool Does Not Communicate with E and C Data Line

Step

Action

Value(s)

Yes

No

1

Does the scan tool power up?

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Go to Step 2

Go to Scan Tool Does Not Power Up

2
  1. Turn ON the ignition, leaving the engine OFF.
  2. Attempt to communicate with each module on the E and C Data Line.

Does any module(s) on the E and C Data Line circuit communicate with the scan tool?

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Go to Step 5

Go to Step 3

3

Test the Battery positive voltage circuit(s), and the ignition voltage circuit(s) of the Radio for an open. Refer to Control Module References for the applicable schematic. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Control Module References for the applicable Diagnostic System Check in Data Link Communications

Go to Step 4

4
  1. Turn OFF the ignition switch.
  2. Test the ground circuit(s) of the Radio for an open. Refer to Control Module References for the applicable schematic. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Control Module References for the applicable Diagnostic System Check in Data Link Communications

Go to Step 8

5

Do both modules on the E and C Data Line circuit communicate with the scan tool?

--

Go to Diagnostic Aids

Go to Step 6

6

Test the Battery positive voltage circuit(s), and the ignition voltage circuit(s) of the CD Player for an open. Refer to Control Module References for the applicable schematic. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Control Module References for the applicable Diagnostic System Check in Data Link Communications

Go to Step 8

7
  1. Turn OFF the ignition switch.
  2. Test the ground circuit(s) of the CD Player for an open. Refer to Control Module References for the applicable schematic. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Control Module References for the applicable Diagnostic System Check in Data Link Communications

Go to Step 8

8
  1. Turn the ignition switch on.
  2. Disconnect the scan tool, if connected.
  3. Test the E and C Data Line circuit between the DLC connector, Radio and the CD Player for a short to ground or a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Control Module References for the applicable Diagnostic System Check in Data Link Communications

Go to Step 9

9

Test the E and C Data Line circuit between the DLC connector, Radio and the CD Player for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Control Module References for the applicable Diagnostic System Check in Data Link Communications

Go to Step 10

10

Replace the module that will not communicate to the scan tool.

Is the repair complete?

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System OK

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