Code 72 - EBCM Serial Data Fault
Code 72 will set if EBCM detects 3 consecutive serial data line messages which are ignored due to errors in transmission. ANTI-LOCK indicator will not glow and anti-lock brake system will remain operational when Code 72 is set.
NOTE:
Code 72 will only set when an off-board serial data device (Tech 1) is attempting to communicate with EBCM. DLC flash code and code clearing methods must be used to read and clear code.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- Checks if Tech 1 can communicate with EBCM.
- Determines if serial data circuit is open.
- Checks for short to battery in serial data circuit.
- Checks for short to ground in serial data circuit.
- Checks if Tech 1 can communicate with EBCM.