Pinpoint Test B: Climate Seats Assembly - Thermal Electric Device (Ted) Diagnostics

B1: CLIMATE SEATS ASSEMBLY - TED SENSOR CIRCUIT RESISTANCE CHECKS AT SEAT TO VEHICLE CONNECTOR
1. Uncouple connector C3HS03B from the seat climate control module
2. Check the resistance of the climate seats TED sensor circuits at connector C3HS03B
- For right-side seat cushion TED sensor circuits, check resistance at pins 2 and 3
- For right-side seat backrest TED sensor circuits, check resistance at pins 4 and 5
- For left-side seat cushion TED sensor circuits, check resistance at pins 7 and 8
- For left-side seat backrest TED sensor circuits, check resistance at pins 9 and 10
Is the resistance between 0.9 and 1.1 kilo-ohms? (Note: these values are based on an ambient temperature of 22°C/72°F)
- Yes : No circuit faults present. No further action
- No : GO to B2.
B2: CLIMATE SEATS ASSEMBLY - TED SENSOR CIRCUIT RESISTANCE CHECKS AT SEAT CLIMATE ASSEMBLY CONNECTOR
1. Locate the appropriate seat backrest/seat cushion climate assembly connector
2. Disconnect connector
3. Check the integrity of connector terminals for bent terminals, backed-out or badly crimped wires. Rectify as required
4. Check the resistance of the climate seats TED sensor circuits at the climate assembly connector, pins 5 and 8 (Green and Green wires)
Is the resistance between 0.9 and 1.1 kilo-ohms? (Note: these values are based on an ambient temperature of 22°C/72°F)
- Yes : GO to B3.
- No : Replace the seat climate assembly
B3: CLIMATE SEATS ASSEMBLY - TED SUPPLY CIRCUIT OPEN CIRCUIT CHECKS AT SEAT CLIMATE ASSEMBLY CONNECTOR
1. Check the TED supply circuits at the climate assembly connector, pins 1 and 3 (Blue and Yellow wires) for open circuit faults
Is an open-circuit fault present?
- Yes : Replace the seat climate assembly
- No : No internal circuit faults present. Check for circuit faults in wiring harness between seat climate control module and climate seat assembly and replace as required