Diagnostic Test

CHECK FOR RELATED DIAGNOSTIC TROUBLE CODES
1. With the scan tool, read Memory Seat Module-Driver (MSMD) DTCs and record on the work order.
  Does the scan tool display any tile/telescope position sensor DTCs?
  
  Yes
  - Repair the MSMD DTC(s). Refer to DIAGNOSTIC CODE INDEX .
  No
  - Go To 2
CHECK FOR AN ACTIVE DTC
1. Move the Telescope Switch in the forward/rearward position multiple times.
2. With the scan tool, read MSMD DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Go To 20
CHECK THE (P152) TELESCOPE STEERING FORWARD/REARWARD POSITION SENSE CIRCUIT
1. Turn the ignition off.
2. Disconnect the Steering Column Telescope Motor harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (P152) Telescope Steering Forward/Rearward Position Sense circuit at the Steering Column Telescope Motor harness connector.
  Is the voltage below 11.0 volts?
  
  Yes
  - Go To 11
  No
  - Go To 4
CHECK THE (G914) SENSOR GROUND CIRCUIT
1. Measure the voltage between the (P152) Telescope Steering Forward/Rearward Position Sense circuit and the (G914) Sensor Ground circuit at the Steering Column Telescope Motor harness connector.
  Is the voltage below 11.0 volts?
  
  Yes
  - Go To 12
  No
  - Go To 5
CHECK THE (P157) TELESCOPE STEERING MOTOR FORWARD/REARWARD DRIVER CIRCUIT
1. Measure the voltage between ground and the (P157) Telescope Steering Motor Forward/Rearward Driver circuit at the Steering Column Telescope Motor harness connector.
  Is the voltage below 1.0 volt?
  
  Yes
  - Go To 6
  No
  - Go To 13
CHECK THE (P953) STEERING MOTOR COMMON CIRCUIT
1. Measure the voltage between ground and the (P953) Steering Motor Common circuit at the Steering Column Telescope Motor harness connector.
  Is the voltage below 1.0 volt?
  
  Yes
  - Go To 7
  No
  - Go To 14
CHECK THE (P157) TELESCOPE STEERING MOTOR FORWARD/REARWARD DRIVER CIRCUIT
1. Connect a 12-volt test light between ground and the (P157) Telescope Steering Motor Forward/Rearward Driver circuit at the Steering Column Telescope Motor harness connector.
2. While observing the test light, move the Telescope Switch in the forward position.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Go To 8
  No
  - Go To 15
CHECK THE (P953) STEERING MOTOR COMMON CIRCUIT
1. Connect a 12-volt test light between ground and the (P953) Steering Motor Common circuit at the Steering Column Telescope Motor harness connector.
2. While observing the test light, move the Telescope Switch in the rearward position.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 9
  No
  - Go To 17
CHECK THE TELESCOPE REARWARD DRIVER
1. Connect a 12-volt test light between the (P157) Telescope Steering Motor Forward/Rearward Driver circuit and the (P953) Steering Motor Common circuit at the Steering Column Telescope Motor harness connector.
2. While observing the test light, move the Telescope Switch in the forward position.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 10
  No
  - Go To 19
CHECK THE TELESCOPE FORWARD DRIVER
1. While observing the test light, move the Telescope Switch in the rearward position.
  Does the test light illuminate brightly?
  
  Yes
  - Replace the Steering Column Telescope Motor Assembly in accordance with the Service Information. Refer to COLUMN, REMOVAL .
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
  No
  - Go To 19
CHECK THE (P152) TELESCOPE STEERING FORWARD/REARWARD POSITION SENSE CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the MSMD C1 harness connector.
3. Measure the resistance of the (P152) Telescope Steering Forward/Rearward Position Sense circuit between the Steering Column Telescope Motor harness connector and the MSMD harness connector.
  Is the resistance below 3.0 Ohms.
  
  Yes
  - Go To 19
  No
  - Repair the (P152) Telescope Steering Forward/Rearward Position Sense circuit for an open or high resistance.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
CHECK THE (G914) SENSOR GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the MSMD C1 harness connector.
3. Measure the resistance of the (G914) Sensor Ground circuit between the Steering Column Telescope Motor harness connector and the MSMD harness connector.
  Is the resistance below 3.0 Ohms.
  
  Yes
  - Go To 19
  No
  - Repair the (G914) Sensor Ground circuit for an open or high resistance.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
CHECK THE (P157) TELESCOPE STEERING MOTOR FORWARD/REARWARD DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
1. Disconnect the MSMD C1 harness connector.
2. Measure the voltage between ground and the (P157) Telescope Steering Motor Forward/Rearward Driver circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (P157) Telescope Steering Motor Forward/Rearward Driver circuit for a short to voltage.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
  No
  - Go To 19
CHECK THE (P953) STEERING MOTOR COMMON CIRCUIT FOR A SHORT TO VOLTAGE
1. Disconnect the MSMD C1 harness connector.
2. Measure the voltage between ground and the (P953) Steering Motor Common circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (P953) Steering Motor Common circuit for a short to voltage.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
  No
  - Go To 19
CHECK THE (P157) TELESCOPE STEERING MOTOR FORWARD/REARWARD DRIVER CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the MSMD C1 harness connector.
3. Check for continuity between ground and the (P157) Telescope Steering Motor Forward/Rearward Driver circuit at the MSMD C1 harness connector.
  Is there continuity between ground and the (P157) Telescope Steering Motor Forward/Rearward Driver circuit?
  
  Yes
  - Repair the (P157) Telescope Steering Motor Forward/Rearward Driver circuit for a short to ground.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
  No
  - Go To 16
CHECK THE (P157) TELESCOPE STEERING MOTOR FORWARD/REARWARD DRIVER CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Measure the resistance of the (P157) Telescope Steering Motor Forward/Rearward Driver circuit between the Steering Column Telescope Motor harness connector and the MSMD harness connector.
  Is the resistance below 3.0 Ohms.
  
  Yes
  - Go To 19
  No
  - Repair the (P157) Telescope Steering Motor Forward/Rearward Driver circuit for an open or high resistance.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
CHECKING THE (P953) STEERING MOTOR COMMON CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the MSMD C1 harness connector.
3. Check for continuity between ground and the (P953) Steering Motor Common circuit at the MSMD C1 harness connector.
  Is there continuity between ground and the (P953) Steering Motor Common circuit?
  
  Yes
  - Repair the (P953) Steering Motor Common circuit for a short to ground.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
  No
  - Go To 18
CHECKING THE (P953) STEERING MOTOR COMMON CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Measure the resistance of the (P953) Steering Motor Common circuit between the Steering Column Telescope Motor harness connector and the MSMD harness connector.
  Is the resistance below 3.0 Ohms.
  
  Yes
  - Go To 19
  No
  - Repair the (P953) Steering Motor Common circuit for an open or high resistance.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
MEMORY SEAT MODULE (MSMD)
1. Using the schematics as a guide, inspect the wiring and connectors between the motor and the MSMD.
2. Check for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out or corroded terminals and correct pin tension.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
  No
  - Replace and program the Memory Seat Module (MSMD) in accordance with the Service Information. Refer to MODULE, MEMORY, SEAT, REMOVAL .
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wiring and connectors while checking for shorted and open circuits.
3. Check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. Check for any Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST .
  No
  - Test complete.