4.
Does warning lamp remain On?
YES
a.
Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "Verification of Vehicle Repair" procedure.
NO
a.
Fault is caused by Faulty HECU or was repaired and HECU memory was not cleared.
b.
The DTC code can be set by excessive TCS control in normal system status. Go to "Verification of Vehicle Repair" procedure.
