Seating - Except Electric: Diagnosis Ford Focus III

Symptom Chart: Seating

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.

REFER to: DIAGNOSTIC METHODS .

for information about these practices.

SYMPTOM CHART

Visual Inspection and Diagnostic Pre-Checks

1. Verify RJB fuse 34 (15A) is OK.

PINPOINT TEST A: THE HEATED SEAT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY - DRIVER

Note. The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Scheme 1

Scheme 2

1. A1 CHECK THE HEATED SEAT MODULE POWER CIRCUIT FOR AN OPEN WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Disconnect: Inline C300B: Disconnect the connector block on the seat track. Remove the (yellow) driver seat side air bag inline (C300B) from the rear of the connector block (seat side). Connect the connector block on the seat track. Tighten to 1 Nm (9 lb-in). Disconnect: Driver Heated Seat Module C359. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C359-5 - Is the voltage greater than 11 volts? Yes: GO to A2 No: VERIFY the RJB fuse 34 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. GO to A7
2. A2 CHECK THE HEATED SEAT MODULE GROUND CIRCUIT FOR AN OPEN Ignition OFF. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C359-4 ohms - Is the resistance less than 3 ohms? Yes: GO to A3 No: REPAIR the circuit. GO to A7
3. A3 CHECK FOR VOLTAGE TO THE SEAT HEATER SWITCH Disconnect: Driver Seat Heater Switch C320. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C320-4 - Is the voltage greater than 11 volts? Yes: GO to A4 No: VERIFY the BCM fuse 85 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. GO to A7
4. A4 CHECK THE SEAT HEATER SWITCH RESISTANCE Ignition OFF. Measure the component side resistance of the driver seat heater switch in each position: Positive Lead Measurement / Action Negative Lead C320-4, Component Side ohms C320-5, Component Side Switch Position Resistance 0 Open circuit 1 6, 849 - 8, 371 ohms 2 5, 724 - 6, 996 ohms 3 4, 599 - 5, 621 ohms 4 3, 474 - 4, 246 ohms 5 2, 584 - 2, 636 ohms Is the resistance within the specified range for each control switch position? Yes: GO to A5 No: INSTALL a new heated seat control switch: REFER to: «Heated Seat Switch - Vehicles With: Center Armrest»(ref-516025-S22498057002012120400000) . REFER to: «Heated Seat Switch - Vehicles Without: Center Armrest»(ref-516025-S36334103682012120400000) . GO to A4
5. A5 CHECK THE SEAT HEATER SWITCH CIRCUIT FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C359-6 ohms C320-5 Is the resistance less than 3 ohms? Yes: GO to A6 No: REPAIR the affected circuits. GO to A7
6. A6 CHECK THE RESISTANCE OF THE BACKREST HEATER MAT Disconnect: Driver Backrest Heater Mat C3049. Measure the component side resistance between: Positive Lead Measurement / Action Negative Lead C3049-2, Component Side ohms C3049-1, Component Side Using the table, compare the measured resistance: Seat Type Resistance Comfort seat 4.91 - 6 ohms Sport seat (cloth) 4.6 - 5.63 ohms Recaro seat (partial leather and leather) 5.9 - 7.21 ohms Is the resistance within specification? Yes: INSTALL a new driver seat cushion heater mat. REFER to: «Front Seat Cushion Heater Mat»(ref-516025-S35049390092012120400000) . GO to A7 No: INSTALL a new driver seat backrest heater mat. REFER to: «Front Seat Backrest Heater Mat»(ref-516025-S23784725282012120400000) . GO to A7
7. A7 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS) Connect: Driver Seat Heater Switch C320. Connect: Driver Backrest Heater Mat C3049. Connect: Driver Heated Seat Module C359. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: Inline C300B: Disconnect the connector block on the seat track. Install the (yellow) driver seat side air bag inline (C300B) into the rear of the connector block (seat side). Connect the connector block on the seat track. Tighten to 1 Nm (9 lb-in). Ignition ON. Using a scan tool, clear the RCM Diagnostic Trouble Codes (DTCs). Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test? Yes: For vehicles built up to 25-06-2012: REFER to: «AIRBAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS) - VEHICLES BUILT UP TO: 25-JUNE-2012»(ref-515937-S28734058212012120400000) . For vehicles built from 11-06-2012: REFER to: «AIRBAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS) - VEHICLES BUILT FROM: 11-JUNE-2012»(ref-515937-S06304940472012120400000) . No: The repair is complete. RETURN the vehicle to the customer.

1. Verify RJB fuse 35 (15A) is OK.

PINPOINT TEST B: THE HEATED SEAT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY - PASSENGER

Note. The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

1. B1 CHECK THE HEATED SEAT MODULE POWER CIRCUIT FOR AN OPEN WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Disconnect: Inline C3007B: Disconnect the connector block on the seat track. Remove the (yellow) passenger seat side air bag inline (C3007B) from the rear of the connector block (seat side). Connect the connector block on the seat track. Tighten to 1 Nm (9 lb-in). Disconnect: Passenger Heated Seat Module C329. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C329-5 - Is the voltage greater than 11 volts? Yes: GO to B2 No: VERIFY the RJB fuse 35 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. GO to B7
2. B2 CHECK THE HEATED SEAT MODULE GROUND CIRCUIT FOR AN OPEN Ignition OFF. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C329-4 ohms - Is the resistance less than 3 ohms? Yes: GO to B3 No: REPAIR the circuit. GO to B7
3. B3 CHECK FOR VOLTAGE TO THE SEAT HEATER SWITCH Disconnect: Passenger Seat Heater Switch C321. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C321-4 - Is the voltage greater than 11 volts? Yes: GO to B4 No: VERIFY the BCM fuse 85 (7.5A) is OK. If OK, REPAIR circuit CBP04 (YE) for an open. If not OK, refer to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. GO to B7
4. B4 CHECK THE SEAT HEATER SWITCH RESISTANCE Ignition OFF. Measure the component side resistance of the passenger seat heater switch in each position: Positive Lead Measurement / Action Negative Lead C321-4, Component Side ohms C321-5, Component Side Switch Position Resistance 0 Open circuit 1 6, 849 - 8, 371 ohms 2 5, 724 - 6, 996 ohms 3 4, 599 - 5, 621 ohms 4 3, 474 - 4, 246 ohms 5 2, 584 - 2, 636 ohms Is the resistance within the specified range for each control switch position? Yes: GO to B5 No: INSTALL a new heated seat control switch: REFER to: «Heated Seat Switch - Vehicles With: Center Armrest»(ref-516025-S22498057002012120400000) . REFER to: «Heated Seat Switch - Vehicles Without: Center Armrest»(ref-516025-S36334103682012120400000) . GO to B4
5. B5 CHECK THE SEAT HEATER SWITCH CIRCUIT FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C329-6 ohms C321-5 Is the resistance less than 3 ohms? Yes: GO to B6 No: REPAIR the affected circuit. GO to B7
6. B6 CHECK THE RESISTANCE OF THE BACKREST HEATER MAT Disconnect: Passenger Backrest Heater Mat C3050. Measure the component side resistance between: Positive Lead Measurement / Action Negative Lead C3050-2, Component Side ohms C3050-1, Component Side Using the table, compare the measured resistance: Seat Type Resistance Comfort seat 4.91 - 6 ohms Sport seat (cloth) 4.6 - 5.63 ohms Recaro seat (partial leather and leather) 5.9 - 7.21 ohms Is the resistance within specification? Yes: INSTALL a new passenger seat cushion heater mat. REFER to: «Front Seat Cushion Heater Mat»(ref-516025-S35049390092012120400000) . GO to B7 No: INSTALL a new passenger seat backrest heater mat. REFER to: «Front Seat Backrest Heater Mat»(ref-516025-S23784725282012120400000) . GO to B7
7. B7 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS) Connect: Passenger Seat Heater Switch C321. Connect: Passenger Backrest Heater Mat C3050. Connect: Passenger Heated Seat Module C329. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: Inline C3007B: Disconnect the connector block on the seat track. Install the (yellow) passenger seat side air bag inline (C3007B) into the rear of the connector block (seat side). Connect the connector block on the seat track. Tighten to 1 Nm (9 lb-in). Ignition ON. Using a scan tool, clear the RCM Diagnostic Trouble Codes (DTCs). Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test? Yes: For vehicles built up to 25-06-2012: REFER to: «AIRBAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS) - VEHICLES BUILT UP TO: 25-JUNE-2012»(ref-515937-S28734058212012120400000) . For vehicles built from 11-06-2012: REFER to: «AIRBAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS) - VEHICLES BUILT FROM: 11-JUNE-2012»(ref-515937-S06304940472012120400000) . No: The repair is complete. RETURN the vehicle to the customer.

1. Verify RJB fuse 9 (25A) is OK.

PINPOINT TEST C: THE POWER SEAT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY - DRIVER

Note. The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

1. C1 CHECK THE SEAT OPERATION WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Disconnect: Inline C300B: Disconnect the connector block on the seat track. Remove the (yellow) driver seat side air bag inline (C300B) from the rear of the connector block (seat side). Connect the connector block on the seat track. Tighten to 1 Nm (9 lb-in). Attempt to operate the seat in all directions. Is the seat inoperative in all directions? Yes: GO to C2 No: If only the recliner motor is inoperative, GO to C4 If only the horizontal motor is inoperative, GO to C6 If only the vertical motor is inoperative, GO to C8
2. C2 CHECK FOR VOLTAGE TO THE POWER SEAT SWITCH Disconnect: Power Seat Switch C352A. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C352A-2 - Is the voltage greater than 11 volts? Yes: GO to C3 No: VERIFY the RJB fuse 9 (25A) is OK. If OK, REPAIR the affected circuit. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. GO to C10
3. C3 CHECK THE POWER SEAT SWITCH GROUND CIRCUIT Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C352A-1 ohms - Is the resistance less than 3 ohms? Yes: INSTALL a new seat control switch REFER to: «Front Seat Control Switch»(ref-516025-S07161887842012120400000) . GO to C10 No: REPAIR the circuit. GO to C10
4. C4 CHECK FOR VOLTAGE TO THE DRIVER SEAT RECLINER MOTOR Disconnect: Driver Seat Recliner Motor C368. NOTE: The voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure while pushing the recline switch forward and rearward: Click to display connectors Positive Lead Measurement / Action Negative Lead C368-1 C368-2 Is the voltage greater than 11 volts when the seat control switch is operated in both directions and 0 volt in the rest position? Yes: INSTALL a new seat backrest. REFER to: «Front Seat Backrest»(ref-516025-S29732650452012120400000) . GO to C10 No: GO to C5
5. C5 CHECK THE DRIVER SEAT RECLINER MOTOR CIRCUIT FOR AN OPEN Disconnect: Power Seat Switch C352C. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C352C-1 ohms C368-1 C352C-2 ohms C368-2 Is the resistance less than 3 ohms for both measurements? Yes: INSTALL a new seat control switch. REFER to: «Front Seat Control Switch»(ref-516025-S07161887842012120400000) . GO to C10 No: REPAIR the circuit. GO to C10
6. C6 CHECK FOR VOLTAGE TO THE DRIVER SEAT HORIZONTAL MOTOR Disconnect: Driver Seat Horizontal Motor C362. NOTE: The voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure pushing the power seat switch forward and rearward: Click to display connectors Positive Lead Measurement / Action Negative Lead C362-3 C362-4 Is the voltage greater than 11 volts when the seat control switch is operated in both directions and 0 volt in the rest position? Yes: INSTALL a new seat track assembly. REFER to: «Front Seat Track»(ref-516025-S20701142952012120400000) . GO to C10 No: GO to C7
7. C7 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN CIRCUIT Disconnect: Power Seat Switch C352D. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C352D-1 ohms C362-3 C352D-2 ohms C362-4 Is the resistance less than 3 ohms for both measurements? Yes: INSTALL a new seat control switch. REFER to: «Front Seat Control Switch»(ref-516025-S07161887842012120400000) . GO to C10 No: REPAIR the circuit. GO to C10
8. C8 CHECK VOLTAGE TO THE DRIVER SEAT HEIGHT MOTOR Disconnect: Driver Seat Height Motor C382. NOTE: The voltage being measured changes polarity dependent upon which direction the seat control switch is activated. Measure while pressing the rear height adjust switch up and down: Click to display connectors Positive Lead Measurement / Action Negative Lead C382-3 C382-6 Is the voltage greater than 11 volts when the seat control switch is operated in both directions and 0 volt in the rest position? Yes: INSTALL a new seat track assembly. REFER to: «Front Seat Track»(ref-516025-S20701142952012120400000) . GO to C10 No: GO to C9
9. C9 CHECK THE DRIVER SEAT HEIGHT MOTOR CIRCUIT FOR AN OPEN Disconnect: Power Seat Switch C352B. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C352B-1 ohms C382-6 C352B-2 ohms C382-3 Is the resistance less than 3 ohms for both measurements? Yes: INSTALL a new seat control switch. REFER to: «Front Seat Control Switch»(ref-516025-S07161887842012120400000) . GO to C10 No: REPAIR the circuit. GO to C10
10. C10 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS) Connect: Power Seat Switch C352A, C352B, C352Cor C352D, if previously disconnected. Connect: Driver Seat Recliner Motor C368, if previously disconnected. Connect: Driver Seat Horizontal Motor C362, if previously disconnected. Connect: Driver Seat Height Motor C382, if previously disconnected. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF. Connect: Inline C300B: Disconnect the connector block on the seat track. Install the (yellow) driver seat side air bag inline (C300B) into the rear of the connector block (seat side). Connect the connector block on the seat track. Tighten to 1 Nm (9 lb-in). Ignition ON. Using a scan tool, clear the RCM Diagnostic Trouble Codes (DTCs). Cycle the ignition OFF then ON. Using a scan tool, perform RCM self-test. Are any RCM DTC retrieved during self-test? Yes: For vehicles built up to 25-06-2012: REFER to: «AIRBAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS) - VEHICLES BUILT UP TO: 25-JUNE-2012»(ref-515937-S28734058212012120400000) . For vehicles built from 11-06-2012: REFER to: «AIRBAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS) - VEHICLES BUILT FROM: 11-JUNE-2012»(ref-515937-S06304940472012120400000) . No: The repair is complete. RETURN the vehicle to the customer.

1. Verify BCM fuse 85 (7.5A) is OK.

PINPOINT TEST D: THE HEATED SEATS ARE INOPERATIVE - DRIVER AND PASSENGER

Scheme 3

1. Refer to: «FLOOR CONSOLE - VEHICLES WITHOUT: CENTER ARMREST»(ref-515965-S10628588812012120400000) .