Seat pinpoint tests (Duratec ST 2.0 l)

E1: CHECKING THE VOLTAGE SUPPLIED TO THE POWER SEAT CONTROL SWITCH

1 Enter the OFF position.

2 Disconnect the C715 Power Seat Inoperative Control Switch.

3 Drive the ON position.

4 Measure the voltage between C715 pin 2 of the power seat control switch, circuit 29-AH6 (orange yellow), on the wiring harness side, and "weight".

• Is the voltage greater than 10 V?

→ Yes

Go to E2

→ No

REPAIR Circuit 29-AH6 (orange yellow). CHECK the system is working properly.

E2: POWER SEAT CONTROL SWITCH GROUND CONTINUITY CHECK

1 Enter the OFF position.

2 Measure the resistance between C715 pin 3 of the power seat control switch, circuit 31-AH6 (black), on the wiring harness side, and "weight".

• Is the resistance less than 5 ohms?

→ Yes

Go to E3

→ No

REPAIR Circuit 31-AH6 (black). CHECK the system is working properly.

E3: CHECK THE VOLTAGE OF THE DOWN ELECTRIC CIRCUIT TO THE SEAT HEIGHT ADJUSTMENT MOTOR

1 Connect C715 Power Seat Inoperative Control Switch.

2 Disconnect the C761 inoperative seat height adjustment motor.

3 Drive the ON position.

4 Move the power seat control switch to the DOWN position.

5 Measure the voltage between C761 pin 1 of the seat height adjustment motor, circuit 32-AH10 (white and black), on the wiring harness side, and "weight".

• Is the voltage greater than 10 V?

→ Yes

Go to E4

→ No

REPAIR Circuit 32-AH10 (white and black). CHECK the system is working properly.

E4: CHECK THE VOLTAGE OF THE LIFT ELECTRIC CIRCUIT TO THE SEAT HEIGHT ADJUSTMENT MOTOR

1 Move the power seat control switch to the UP position.

2 Measure the voltage between C761 pin 2 of the seat height adjustment motor, circuit 33-AH10 (yellow-black), on the wiring harness side, and "weight".

• Is the voltage greater than 10 V?

→ Yes

INSTALL a new seat height motor. CHECK the system for correct operation.

→ No

REPAIR Circuit 33-AH10 (yellow-black). CHECK the system is working properly.

F1: CHECK THE VOLTAGE SUPPLIED TO THE HEATED SEAT SWITCH

1 Drive the ON position.

2 Press the seat heating switch.

• Is the seat heating switch LED on?

→ Yes

Go to F2

→ No

Go to F6

F2: CHECK THE VOLTAGE SUPPLIED TO THE HEATED SEAT MATS OFF

1 Enter the OFF position.

2 Disconnect the C30 or C31 of the inoperative seat heater.

3 Drive the ON position.

4 Press the seat heating switch.

5 Measure the voltage between:

- Pin 5 C30 driver's seat heating, circuit 15S-HC8 (green-red), from the wiring side, and "weight".

- Pin 5 C31 passenger seat heating, circuit 15S-HC11 (green-white), from the wiring side, and "weight".

• Is the voltage greater than 10 V?

→ Yes

Go to F3

→ No

REPAIR circuit 15S-HC8 (green-red) or electrical circuit 15S-HC11 (green and white). CHECK the system is working properly.

F3: CONTINUITY CHECK OF SEAT CUSHION CARPET GROUND ELECTRICAL

1 Enter the OFF position.

2 Measure the resistance between:

- Pin 12 C30 driver's seat back heating inoperative, circuit 31-HC8 (black), from the wiring side, and "weight".

- Pin 12 C31 passenger seat back heating inoperative, circuit 31-HC11 (black), from the wiring side, and "weight".

• Is the resistance less than 5 ohms?

→ Yes

Go to F4

→ No

REPAIR Circuit 31-HC8 (black) or electrical circuit 31-HC11 (black). CHECK the system is working properly.

F4: CONTINUITY CHECK OF SEAT CUSHION CARPET ELECTRICAL CIRCUIT

1 Measure the resistance of the heating elements between:

- Pin 5 C30 driver's seat cushion heater inoperative, circuit 15S-HC8 (green-red), on the side of the element, and pin 6 C30 of the inoperative seat cushion heating, electrical circuit 15S-HC7 (green-blue), from the side of the element.

- Pin 5 C31 passenger seat cushion heater inoperative, circuit 15S-HC11 (green-white), on the side of the element, and pin 6 C31 of the non-functioning seat cushion heating, electrical circuit 15S-HC10 (green-orange), from the side of the element.

• Resistance is 9 ohms (resistance of a single heating mat)?

→ Yes

Go to F5

→ No

INSTALL a new heating mat. CHECK the system is working properly.

F5: CONTINUITY CHECK OF SEAT BACK HEATED MAT CIRCUIT

1 Measure the resistance of the heating elements between:

- Pin 11 C30 driver's seat back heating inoperative, circuit 15S-HC7 (green-blue), on the side of the element, and pin 12 C30 of the inoperative seat back heating, circuit 31-HC8 (black), from the side of the element.

- Pin 11 C31 passenger seat back heating inoperative, circuit 15S-HC10 (green-orange), on the side of the element, and pin 12 C31 of the inoperative seat back heating, circuit 31-HC11 (black), from the side of the element.

• Resistance is 9 ohms (single heater mat resistance)?

→ Yes

REPAIR circuit 15S-HC7 (green-blue) or electrical circuit 15S-HC10 (green-orange). CHECK the system is working properly.

→ No

INSTALL a new heating mat. CHECK the system is working properly.

F6: CHECK IGNITION VOLTAGE AT HEATED SEAT SWITCH

1 Enter the OFF position.

2 Disconnect C694 or C695 seat heater inoperative switch.

3 Drive the ON position.

4 Measure the voltage between:

- Pin 2 C694 Driver's seat heater inoperative switch, circuit 15-HC6 (green-yellow), from the wiring side, and "weight".

- Pin 2 C695 Passenger seat heater inoperative switch circuit 15-HC6 (green-black), from the wiring side, and "weight".

• Is the voltage greater than 10 V?

→ Yes

Go to F7

→ No

REPAIR Circuit 15-HC6 (green-yellow) or electrical circuit 15-HC9 (green-black). CHECK the system is working properly.

F7: CONTINUITY CHECK OF SEAT HEATED SWITCH GROUND CIRCUIT

1 Enter the OFF position.

2 Measure the resistance between:

- Pin 4 C694 of driver's seat heater inoperative switch, circuit 31-LH29 (black), from the wiring side, and "weight".

- Pin 4 C695 Passenger Seat Heater Inoperative Switch Circuit 31-LH43 (black), from the wiring side, and "weight".

• The resistance is less than 5 ohms.

→ Yes

Check for a customer complaint.

→ No

REPAIR circuit 31-LH29 (black) or electrical circuit 31-LH43 (black). CHECK the system is working properly.