GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1999 🢒 Catera 🢒 Body and Accessories 🢒 Cruise Control 🢒 Cruise Control Does Not Resume, Accel, Tap Up or Down

Step

Action

Value(s)

Yes

No

DEFINITION: This diagnostic table is used to diagnose the following cruise control features that are inoperative from the cruise control switch only:

    • cruise control does not resume to preset speed
    • decel to a desired lower speed
    • accelerate to a desired faster speed
    • increase speed in small amounts (tap up)
    • decrease speed in small amounts (tap down)

1

Did you perform the Cruise Control System Check?

--

Go to Step 2

Go to Cruise Control System Check

2

Is the customer complaint one of the following:

    • Cruise Control Does Not Resume
    • Decel
    • Tap Down

--

Go to Step 3

Go to Step 4

3
  1. Install a scan tool.
  2. Establish communication with the engine control module (ECM).
  3. With the scan tool, observe the RESUME SWITCH parameter in the ECM data list.
  4. Press the RESUME/DECEL button at the end of the lever.

Does the scan tool display ON?

--

Go to Step 5

Go to Step 6

4

Is the customer complaint Cruise Control Does Not Accelerate or Tap Up when using the switch?

--

Go to Step 7

--

5

Replace the ECM.

Is the replacement complete?

--

Go to Step 8

--

6
  1. Turn OFF the ignition.
  2. Disconnect ECM connector C2.
  3. Turn ON the ignition, with the engine OFF.
  4. Measure the voltage at ECM connector terminal 10 with the RESUME/DECEL button at the end of the lever pressed.

Does the voltage measure within the specified range?

10-12 V

Go to Step 5

Go to Step 9

7

Replace the cruise control switch.

Is the replacement complete?

--

Go to Step 8

--

8

Verify that the cruise control system operates properly.

Does the cruise control system operate properly?

--

System OK

--

9

Test CKT FX500 for an open circuit.

Did you find and correct the condition?

--

Go to Step 8

Go to Step 7