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Home >> Saturn >> 2006 >> Vue Red Line, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Manual Transmission - GETRAG 5 Speed) >> Diagnostic Information and Procedures >> DTC P0502 >> Conditions for Clearing the MIL/DTC

Conditions for Clearing the MIL/DTC

WARNING: This page is about a different variant/trim than selected.
DTC P0502

Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Install a scan tool.
  2. Turn ON the ignition with the engine OFF.
    3. IMPORTANT: Before clearing the DTCs, use the scan tool in order to record the Freeze Frame and Failure Records for reference. The Clear Info function will erase the data.
  3. Record the DTC Freeze Frame and Failure Records.
  4. Clear the DTCs.
    5. NOTE: Support the lower control arms in the normal horizontal position in order to avoid damage to the drive axles. Do not operate the vehicle in gear with the wheels hanging down at full travel.
  5. Raise the drive wheels.
  6. Start and idle the engine.
  7. Place the transmission in 1st gear.
  8. Monitor Vehicle Speed on the scan tool.
  9. With the drive wheels rotating, increase and decrease the throttle position.
Does the scan tool indicate Vehicle Speed increasing when wheel speed increases?		 - Refer to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3
  1. Turn OFF the ignition.
  2. Disconnect the VSS.
  3. Turn ON the ignition with the engine OFF.
  4. Using the DMM, measure the voltage of ignition 1 voltage circuit of the VSS to ground.
Does the voltage measure near the specified value?		 B+ Go to Step 4  Go to Step 9 
4 Measure the voltage from the ignition 1 voltage circuit of the VSS to the VSS ground circuit.
Does the voltage measure near the specified value?		 B+ Go to Step 5  Go to Step 12 
5
  1. Using the J-35616  connector test adapter kit, connect a jumper between the ignition 1 circuit and the VSS.
  2. Connect another jumper between the VSS ground circuit and the VSS.
  3. Connect the DMM between terminal 1 of the VSS and ground.
  4. Turn ON the ignition, with the engine OFF.
  5. Select AC volts on the DMM.
  6. Place transmission in neutral.
  7. Rotate the rear wheels by hand while observing the DMM AC volts.
Does the DMM display AC volts above the specified value?		 .15 V Go to Step 6  Go to Step 16 
6
  1. Turn OFF the ignition.
  2. Disconnect the ECM.
  3. Using the DMM, measure the resistance of the VSS signal circuit between the VSS signal of the ECM and terminal 1 of the VSS.
Does the resistance measure less than the specified value?		 5 Ω Go to Step 7  Go to Step 13 
7 Using the DMM, measure the resistance between the VSS signal circuit and ground.
Is the resistance less than the specified value?		 50 kΩ Go to Step 14  Go to Step 8 
8 Using a test lamp connected to the ground, probe the VSS signal circuit.
Does the test lamp illuminate?		 - Go to Step 15  Go to Step 18 
9
  1. Inspect the BACKUP fuse for an open. Refer to Circuit Protection - Fuses .
  2. Replace the fuse if necessary.
Was the fuse open?		 - Go to Step 10  Go to Step 11 
10
IMPORTANT: The condition that affects this circuit may exist in other connecting branches of the circuit. Refer to Power Distribution Schematics for complete circuit distribution.
Test the ignition 1 voltage circuit of the VSS for a short to ground. Refer to Testing for Short to Ground .Did you find and correct the condition?		 - Go to Step 19  -
11 Test for an open or high resistance in the ignition 1 voltage circuit of the VSS. Refer to Testing for Continuity .
Did you find and correct the condition?		 - Go to Step 19  -
12 Repair the open in the VSS ground circuit. Refer to Wiring Repairs .
Did you complete the repair?		 - Go to Step 19  -
13 Repair the open in the VSS signal circuit. Refer to Wiring Repairs .
Did you complete the repair?		 - Go to Step 19  -
14 Repair the short to ground in the VSS signal circuit. Refer to Wiring Repairs .
Did you complete the repair?		 - Go to Step 19  -
15 Repair the short to voltage on the VSS signal circuit. Refer to Wiring Repairs .
Did you complete the repair?		 - Go to Step 19  -
16
  1. Remove the VSS sensor. Refer to Vehicle Speed Sensor (VSS) Replacement .
  2. Inspect the VSS and the transmission for the following:
    • Incorrect VSS
    • VSS damage
    • Excessive VSS to rotor gap
    • Incorrect VSS rotor alignment
    • VSS rotor damage
    • Loose VSS
  3. Repair any of the above conditions.
Did you find and correct the condition?		 - Go to Step 19  Go to Step 17 
17 Replace the VSS. Refer to Vehicle Speed Sensor (VSS) Replacement .
Did you complete the repair?		 - Go to Step 19  -
18 Replace the ECM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the repair?		 - Go to Step 19  -
19 In order to verify your repair, perform the following procedure:
  1. Select DTC.
  2. Select Clear Info.
  3. Drive the vehicle.
  4. Ensure the vehicle speed is greater than 3 km/h (2 mph) for at least 3 seconds.
  5. Select specific DTC.
  6. Enter DTC P0502.

Has the test run and passed?		 - Go to Step 20  Go to Step 2 
20 With a 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 Trouble Code (DTC) List - Vehicle System OK
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