GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 LeSabre 🢒 Suspension 🢒 Real Time Damping (RTD) 🢒 DTC 32 Lateral Accelerator Switch Error

Conditions for Setting the DTC

The Control Module will monitor the lateral accelerator switch signal for invalid voltage levels. A lateral accelerator switch error occurs when the lateral accelerator switch signal is short circuited to B+ or ground, or the lateral accelerator switch is open-circuited or disconnected. Recovery occurs upon detection of valid lateral accelerator switch input voltage.

Action Taken When the DTC Sets

  1. Record lateral accelerator switch error.
  2. Turn on both driver select switch L.E.D.s.
  3. Disable lateral accelerator switch input until valid voltage level is detected.

Step

Action

Value(s)

Yes

No

1
    • Turn the ignition ON (car level).
    • Backprobe the control module connector with a digital voltmeter.
        Measure the voltage from pin D7 to pin D16 (ground).

Is the measurement less than the specified value?

1 V

Go to Step 2

Go to Step 7

2
  1. Turn the ignition OFF.
  2. Disconnect the control module connector.
  3. Check the resistance between pins D7 and D16 of the wiring harness connector.

Is the resistance greater than the specified value?

1 ohms

Go to Step 4

Go to Step 3

3

Repair the short circuit to ground condition in CKT 1309 (pin D7).

Is the repair complete?

--

Go to RTD Diagnostic System Check

--

4

Check the resistance between pins C2 and D16.

Is the resistance greater than the specified value?

1 ohms

Go to Step 5

Go to Step 6

5

Replace the control module. Refer to Electronic Suspension Control Module Replacement .

Is the replacement complete?

--

Go to RTD Diagnostic System Check

--

6

Repair the short circuit to ground condition in CKT 1308 (pin C2).

Is the repair complete?

--

Go to RTD Diagnostic System Check

--

7

Is the measurement within the specified value?

1--2.5 V

Go to Step 8

Go to Step 11

8
  1. Clear error codes. Refer to Clearing DTCs .
  2. Enter diagnostics.

Is code 32 still set?

--

Go to Step 9

Go to Step 10

9

Replace the control module. Refer to Electronic Suspension Control Module Replacement .

Is the replacement complete?

--

Go to RTD Diagnostic System Check

--

10

Replace the lateral accelerator switch. Refer to Vehicle Lateral Accelerometer Replacement .

Is the replacement complete?

--

Go to RTD Diagnostic System Check

--

11

Is the measurement within the specified value?

2.5--4.2 V

Go to Step 12

Go to Step 13

12

Replace the lateral accelerator switch. Refer to Vehicle Lateral Accelerometer Replacement .

Is the replacement complete?

--

Go to RTD Diagnostic System Check

--

13

Is the measurement within the specified value?

4.2--5.5 V

Go to Step 15

Go to Step 14

14

Check CKTs 1308 and 1309 for a short circuit to ignition/battery condition.

Is a short circuit to ignition/battery condition present?

--

Go to Step 20

--

15
  1. Disconnect the control module.
  2. Measure the resistance between pins D7 and C2 of the wiring harness connector.

Is the resistance less than the specified value?

100 ohms

Go to Step 16

Go to Step 17

16

Replace the control module. Refer to Electronic Suspension Control Module Replacement .

Is the replacement complete?

--

Go to RTD Diagnostic System Check

--

17

Disconnect the lateral accelerator switch and measure the resistance across the switch terminals.

Is the resistance less than the specified value?

100 ohms

Go to Step 18

Go to Step 19

18

Repair the open circuit condition in CKT 1308 or 1309.

Is the repair complete?

--

Go to RTD Diagnostic System Check

--

19

Replace the lateral accelerator switch. Refer to Vehicle Lateral Accelerometer Replacement .

Is the replacement complete?

--

Go to RTD Diagnostic System Check

--

20

Repair the short circuit to ignition/battery condition in CKT 1308 or 1309.

Is the repair complete?

--

Go to RTD Diagnostic System Check

--