Inspection And Verification: Notes
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.VISUAL INSPECTION
Mechanical Electrical - Seat heater switches condition and installation
- Fuses
- Harnesses and connectors
- Seat heater module
- Seat heater switches
- Seat heater mat
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, verify the symptom and refer to the Symptom Chart.
NOTE:
If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the warranty policy and procedures information or determine if any prior approval program is in operation, prior to the installation of a new module/component.
NOTE:
Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give additional information read by the manufacturer approved diagnostic system).
NOTE:
When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.
NOTE:
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
NOTE:
Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
NOTE:
If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause. Always check for loose connections and corroded terminals.
DTC Index
For a complete list of all diagnostic trouble codes that could be logged on this vehicle, please refer to General Information.
NOTE:
To ensure an accurate resistance reading, calibrated test equipment must be
used
SEAT HEATER MAT APPLICATION CHART
| Vehicle /Year | Cushion / Backrest | Heater Mat / NTC Resistor | Left Hand Drive | Right Hand Drive | Minimum Resistance | Maximum Resistance | |||
|---|---|---|---|---|---|---|---|---|---|
| Passenger Side Connector / Pin | Driver Side Connector / Pin | Passenger Side Connector / Pin | Driver Side Connector / Pin | Ohms At 20°C ±10°C | Ohms At 20°C ±10°C | ||||
| Discovery 3 2006 | Cushion | Heater mat | C2950-1 and C2950-4 | C0085-1 and C0085-4 | C2950-1 and C2950-4 | C0085-1 and C0085-4 | 0, 75 | 1, 0 | |
| NTC resistor | C2950-2 and C2950-3 | C0085-2 and C0085-3 | C2950-2 and C2950-3 | C0085-2 and C0085-3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | connected in series | connected in series | connected in series | connected in series | 0, 44 | 0, 59 | ||
| Discovery 4 2010 | Cushion | Heater mat | C3542-1 and C3542-4 | C3542-1 and C3542-4 | C3542-1 and C3542-4 | C3542-1 and C3542-4 | 0, 70 | 1, 0 | |
| NTC resistor | C3542-2 and C3542-3 | C3542-2 and C3542-3 | C3542-2 and C3542-3 | C3542-2 and C3542-3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | C3543-1 and C3543-2 | C3543-1 and C3543-2 | C3543-1 and C3543-2 | C3543-1 and C3543-2 | 0, 4 | 0, 7 | ||
| Range Rover Sport 2010 | Cushion | Heater mat | C3542-1 and C3542-4 | C3542-1 and C3542-4 | C3542-1 and C3542-4 | C3542-1 and C3542-4 | 0, 93 | 1, 25 | |
| NTC resistor | C3542-2 and C3542-3 | C3542-2 and C3542-3 | C3542-2 and C3542-3 | C3542-2 and C3542-3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | C3543-1 and C3543-2 | C3543-1 and C3543-2 | C3543-1 and C3543-2 | C3543-1 and C3543-2 | 0, 43 | 0, 6 | ||
| Freelander 2 | Cushion | Heater mat | C3HS08C-1 and C3HS08C-4 | C3HS03C-1 and C3HS03C-4 | C3HS08C-1 and C3HS08C-4 | C3HS03C-1 and C3HS03C-4 | 0, 8 | 1, 0 | |
| NTC resistor | C3HS08C-2 and C3HS08C-3 | C3HS03C-2 and C3HS03C-3 | C3HS08C-2 and C3HS08C-3 | C3HS03C-2 and C3HS03C-3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | C3HS08B-1 and C3HS08B-2 | C3HS03B-1 and C3HS03B-2 | C3HS08B-1 and C3HS08B-2 | C3HS03B-1 and C3HS03B-2 | 0, 5 | 0, 7 | ||
| Range Rover 2010 | Cushion | Heater mat | C0969-1 and C0969-4 | C2090-1 and C2090-4 | C2090-1 and C2090-4 | C0969-1 and C0969-4 | 0.67 | 0.9 | |
| NTC resistor | C0969-2 and C0969-3 | C2090-2 and C2090-3 | C2090-2 and C2090-3 | C0969-2 and C0969-3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | C0971-1 and C0971-2 | C2091-1 and C2091-2 | C2091-1 and C2091-2 | C0971-1 and C0971-2 | 0.53 | 0.71 | ||
| Rear Seat Cushion | Heater mat | C2043-2 and C3030-1 | C2042-2 and C3030-1 | C2042-2 and C3030-1 | C2043-2 and C3030-1 | 0.74 | 0.99 | ||
| NTC resistor | C2043-1 and C2043-3 | C2042-1 and C2042-3 | C2042-1 and C2042-3 | C2043-1 and C2043-3 | 4 000 | 10 000 | |||
| Rear Seat Backrest | Heater mat | C3030-1 and C3030-2 | C2993-1 and C2993-2 | C2993-1 and C2993-2 | C3030-1 and C3030-2 | 0.74 | 0.93 | ||
| Range Rover Evoque | Cushion | Heater mat | C3HS07BBM-1 and C3HS07BBM-4 | C3HS02ABM-1 and C3HS02ABM-4 | C3HS07BBM-1 and C3HS07BBM-4 | C3HS002ABM-1 and C3HS02ABM-4 | 1.1 | 1.48 | |
| NTC resistor | C3HS07BBM-2 and C3HS07BBM-3 | C3HS02ABM-2 and C3HS02ABM-3 | C3HS07BBM-2 and C3HS07BBM-3 | C3HS02ABM-2 and C3HS02ABM-3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | C3HS06ABM-1 and C3HS06ABM-2 | C3HS01ABM-1 and C3HS01ABM-2 | C3HS06ABM-1 and C3HS06ABM-2 | C3HS01ABM-1 and C3HS01ABM-2 | 0.77 | 1.03 | ||