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Home >> Saturn >> 2002 >> LW200 Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 312 (Automatic Transaxle - 4T40-E/4T45-E - Diagnosis (DTC P0719 To DTC P0757)) >> Diagnostic Trouble Codes >> DTC P0724 (2.2L - L61) >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Saturn LW300, 2003 Saturn LW200, 2003 Saturn L300, and 2003 Saturn L200. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  Disconnecting the brake switch connector, jumping the circuit, and observing a status change, isolates the brake switch as the source of the DTC.
  2. 3:  If the ignition 1 voltage circuit shorts to ground, the BRAKE fuse opens.
  3. 5:  If the brake switch is properly adjusted, then the brake switch must be replaced.
  4. 8:  Replace the PCM only after you have completed the preceding diagnostic steps.
DTC P0724 (2.2L - L61)

Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check - Engine Controls? - Go to Step 2  Go to DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS in Self-Diagnostics - 3.0L or DIAGNOSTIC SYSTEM CHECK -- ENGINE CONTROLS in Self-Diagnostics - 2.2L
2 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
    IMPORTANT: Before clearing the DTC, use the scan tool in order to record the Failure Records. Using the Clear Info function erases the Failure Records from the PCM.
  3. Record the DTC Failure Records.
  4. Clear the DTC.
  5. Select Brake Switch on the scan tool.
  6. Disconnect the brake switch connector.
  7. Using the J-35616  connector test adapter kit, install a fused jumper wire between terminal A and B of the brake switch connector.
Did the brake switch status change from Released to Applied?		 - Go to Step 5  Go to Step 3 
3 
  1. Remove the BRAKE fuse.
  2. Inspect the fuse for an open.
Refer to Circuit Protection - Fuses in Wiring Systems.Is the fuse open?		 - Go to Step 4  Go to Step 6 
4
IMPORTANT: The condition that affects this circuit may exist in other connecting branches of the circuit. Refer to POWER DISTRIBUTION for L200 or POWER DISTRIBUTION for LW200 or POWER DISTRIBUTION for L300 or POWER DISTRIBUTION for LW300 for complete circuit distribution.
Test the ignition 1 voltage circuit (CKT 540) of the brake switch for a short to a ground.Refer to Testing for Short to Ground and Wiring Repairs in Wiring Systems.Did you find and correct the condition?		 - Go to Step 9  -
5 
  1. Inspect the brake switch for proper adjustment.
  2. Adjust the brake switch as necessary.
Refer to STOP LAMP SWITCH ADJUSTMENT in Lighting Systems.Did the brake switch require adjustment?		 - Go to Step 9  Go to Step 7 
6
  1. Test the ignition 1 voltage circuit (CKT 540) of the brake switch for an open.
  2. Test the signal circuit (CKT 20) of the brake switch for an open.
Refer to Testing for Continuity and Wiring Repairs in Wiring Systems.Did you find and correct a condition?		 - Go to Step 9  Go to Step 8 
7 Replace the brake switch.
Refer to STOP LAMP SWITCH REPLACEMENT in Lighting Systems.
Did you complete the replacement?		 - Go to Step 9  -
8  Replace the PCM.
Refer to POWERTRAIN CONTROL MODULE in Removal & Installation.
Did you complete the replacement?		 - Go to Step 9  -
9 Perform the following procedure in order to verify the repair:
  1. Select DTC.
  2. Select Clear Info.
  3. Operate the vehicle under the following conditions:
    • Turn ON the ignition, with the engine OFF.
    • Apply and release the brake pedal.
    • The PCM must receive 12 volts, brake switch closed, on the circuit for 2 seconds.
  4. Select Specific DTC.
  5. Enter DTC P0724.

Has the test run and passed?		 - Go to Step 10  Go to Step 2 
10 With the scan tool, observe the stored information, capture info and DTC info.
Does the scan tool display any DTCs that you have not diagnosed?		 - Go to DIAGNOSTIC TESTS in Self-Diagnostics - 2.2L or DIAGNOSTIC TESTS in Self-Diagnostics - 3.0L System OK
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