Pinpoint tests seats (Duratec ST 2.0 l)

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

1Enter the OFF position.

2Disconnect C715 inoperative power seat control switch.

3Enter the ON position.

4Measure the voltage between power seat control switch C715 pin 2, circuit 29-AH6 (OG/YE), harness side and ground.

• Is the voltage greater than 10 V?

→ Yes

Go to E2

→ No

REPAIR electrical circuit 29-AH6 (orange/yellow). CHECK for proper system operation.

E2: CHECKING THE CONTINUITY OF THE POWER SEAT CONTROL SWITCH GROUND CIRCUIT

1Enter the OFF position.

2Measure the resistance between power seat control switch C715 pin 3, circuit 31-AH6 (Black), harness side and ground.

• Resistance less than 5 ohms?

→ Yes

Go to E3

→ No

REPAIR electrical circuit 31-AH6 (black). CHECK for proper system operation.

E3: CHECKING THE VOLTAGE IN THE LOWERING CIRCUIT SUPPLIED TO THE SEAT HEIGHT ADJUSTMENT MOTOR

1Connect C715 to the inoperative power seat control switch.

2Disconnect C761 of the inoperative seat height adjustment motor.

3Enter the ON position.

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

5Measure the voltage between seat height adjustment motor pin 1 C761, circuit 32-AH10 (WH/BLK), harness side and ground.

• Is the voltage greater than 10 V?

→ Yes

Go to E4

→ No

REPAIR electrical circuit 32-AH10 (white/black). CHECK for proper system operation.

E4: CHECKING THE VOLTAGE IN THE LIFT CIRCUIT SUPPLIED TO THE SEAT HEIGHT ADJUSTMENT MOTOR

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

2Measure the voltage between seat height adjustment motor pin 2 C761, circuit 33-AH10 (YE/BLK), harness side and ground.

• Is the voltage greater than 10 V?

→ Yes

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

→ No

REPAIR electrical circuit 33-AH10 (yellow/black). CHECK for proper system operation.

F1: CHECKING THE VOLTAGE SUPPLIED TO THE SEAT HEATING SWITCH

1Enter the ON position.

2Press the seat heating switch.

• Is the seat heating switch LED on?

→ Yes

Go to F2

→ No

Go to F6

F2: CHECKING THE VOLTAGE SUPPLIED TO THE MATS OF THE INOPERATING SEAT HEATING SYSTEM

1Enter the OFF position.

2Disconnect C30 or C31 of the inoperative seat heater.

3Enter the ON position.

4Press the seat heating switch.

5Measure the voltage between:

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

– Pin 5 C31 passenger seat cushion heating, electrical circuit 15S-HC11 (green/white), wiring side, and ground.

• Is the voltage greater than 10 V?

→ Yes

Go to F3

→ No

REPAIR circuit 15S-HC8 (green/red) or circuit 15S-HC11 (green/white). CHECK for proper system operation.

F3: CHECKING THE CONTINUITY OF THE SEAT CUSHION HEATING MAT GROUND CIRCUIT

1Enter the OFF position.

2Measure the resistance between:

– Pin 12 C30 of the inoperative driver's seat back heating, electrical circuit 31-HC8 (black), on the wiring side, and ground.

– Pin 12 C31 of the inoperative passenger seat back heating, electrical circuit 31-HC11 (black), on the wiring side, and ground.

• Resistance less than 5 ohms?

→ Yes

Go to F4

→ No

REPAIR circuit 31-HC8 (black) or circuit 31-HC11 (black). CHECK for proper system operation.

F4: CHECKING THE CONTINUITY OF THE SEAT CUSHION HEATING MAT CIRCUIT

1Measure the resistance of the heating elements between:

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

– Pin 5 C31 of the inoperative passenger seat cushion heating, circuit 15S-HC11 (green/white), element side, and pin 6 C31 of the inoperative seat cushion heating, circuit 15S-HC10 (green/orange), element side.

• Is the resistance 9 ohms (resistance of a single heating mat)?

→ Yes

Go to F5

→ No

INSTALL a new heating mat. CHECK the system for proper operation.

F5: CHECKING THE INTEGRITY OF THE SEAT BACK HEATING MAT CIRCUIT

1Measure the resistance of the heating elements between:

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

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

• Is the resistance 9 ohms (resistance of a single heater mat)?

→ Yes

REPAIR circuit 15S-HC7 (green/blue) or circuit 15S-HC10 (green/orange). CHECK for proper system operation.

→ No

INSTALL a new heating mat. CHECK the system for proper operation.

F6: CHECKING THE IGNITION VOLTAGE TO THE SEAT HEATING SWITCH

1Enter the OFF position.

2Disconnect C694 or C695 from the inoperative seat heater switch.

3Enter the ON position.

4Measure the voltage between:

– Pin 2 C694 of the driver's seat heater inoperative switch, circuit 15-HC6 (green/yellow), harness side, and ground.

– Pin 2 C695 of the passenger seat heater inoperative switch, circuit 15-HC6 (green/black), harness side, and ground.

• Is the voltage greater than 10 V?

→ Yes

Go to F7

→ No

REPAIR circuit 15-HC6 (green/yellow) or circuit 15-HC9 (green/black). CHECK for proper system operation.

F7: CHECKING THE CONTINUITY OF THE SEAT HEATING SWITCH GROUND CIRCUIT

1Enter the OFF position.

2Measure the resistance between:

– Pin 4 C694 of the inoperative driver's seat heating switch, electrical circuit 31-LH29 (black), harness side, and ground.

– Pin 4 C695 of the inoperative passenger seat heating switch, electrical circuit 31-LH43 (black), on the wiring side, and ground.

• Resistance is less than 5 Ohm.

→ Yes

Check for a customer complaint.

→ No

REPAIR circuit 31-LH29 (black) or circuit 31-LH43 (black). CHECK for proper system operation.