Pinpoint Test J: C1D1987 Tire Pressure Monitoring System External Receiver Data Line Missing Message

J1: C1D1987 VERIFY EXTERNAL RECEIVER DATA LINE MISSING MESSAGE
1. Using manufacturer approved diagnostic system run On Demand Self Test (0x0202).
  Is the DTC C1D1987 set?
  - Yes : GO to J2 .
  - No : GO to J5 .

J2: C1D1987 CHECK EXTERNAL RECEIVER DATA LINE CIRCUIT

Ignition off.
Disconnect the Tire Pressure Monitoring System Receiver electrical connector, C3MC45.
Disconnect the Tire Pressure Monitoring System Control Module electrical connector, C3MC39B.

Measure the resistance between

C3MC45, HARNESS SIDE	C3MC39B, HARNESS SIDE
Pin 1	Pin4

Is the resistance less than 5 ohms?

Yes : GO to J3 .
No : REPAIR the high resistance/open circuit in wiring harness.

J3: C1D1987 CHECK EXTERNAL RECEIVER
1. Reconnect the Tire Pressure Monitoring System Control Module electrical connector, C3MC39B.
2. Reconnect the Tire Pressure Monitoring System Receiver electrical connector, C3MC45.
3. Using manufacturer approved diagnostic system run On Demand Self Test (0x0202) .
  Is the DTC C1D1987 set?
  - Yes : Replace Tire Pressure Monitoring Receiver. GO to J4 .
  - No : Investigate possible cause of intermittent failure.
J4: C1D1987 CHECK TIRE PRESSURE MONITORING SYSTEM CONTROL MODULE
1. Using manufacturer approved diagnostic system run On Demand Self Test (0x0202) .
  Is the DTC C1D1987 set?
  - Yes : Replace Tire Pressure Monitoring System Control Module.
  - No : Test is complete. No further action is required.
J5: C1D1987 CHECK WHEELS HAVE TIRE SENSORS INSTALLED
NOTE: As a visual check, a tire low pressure sensor has a metal valve stem rather than a rubber one and cannot be installed to a mini/space saver spare wheel.
1. Check that all full size running wheel and tire assemblies have tire low pressure sensors installed.
  Is a full size wheel and tire assembly with tire low pressure sensor installed to all running wheel positions?
  - Yes : GO to J6 .
  - No : If agreed with the customer install correct tire low pressure sensors in accordance with that defined in the manufacturer approved diagnostic system new tire low pressure sensor application, as required.
    NOTE: Confirm why the vehicle has non-Tire Pressure Monitoring System wheel & tire assemblies installed before installing tire low pressure sensors, which are not to be claimed under vehicle warranty
J6: C1D1987 CHECK TIRE SENSOR COMPATIBILITY TO TIRE PRESSURE MONITORING SYSTEM RECEIVER
1. Remove tire low pressure sensor from 1 wheel.
2. Verify the tire low pressure sensor part number from the information on the casing.
  Is the tire low pressure sensor the correct part for the vehicle?
  - Yes : Replace Tire Pressure Monitoring Receiver. Carry out the following to verify repair.
    Remove the Tire Pressure Monitoring System power supply fuse and re-install it. Clear DTCs and leave the vehicle stationary for 15 minutes, then drive it at a speed greater than 15.5 mph (25 kph) continuously for at least 10 minutes.
    
    NOTE: If the vehicle speed drops below this value, the drive time to complete the test will need to be increased. The use of the manufacturer approved diagnostic system, and the datalogger signal 'Tire pressure monitor system status - learn mode status' will verify the completion of the test when the value returns to `Inactive'.
  No
  - Install the correct tire low pressure sensor, of correct frequency, in accordance with that defined in the manufacturer approved diagnostic system new tire low pressure sensor application, to the position(s) identified.
    NOTE: Confirm why the vehicle has incorrect Tire Pressure Monitoring System wheel & tire assemblies installed before installing tire low pressure sensors, which are not to be claimed under vehicle warranty)