Code 53 and/or 73

Go to Chart A11 If no trouble is found while performing tests on Chart A11, do not go to chart F Instead go to Chart G Solenoid Valves. Perform solenoid valve test for rear valves. If no trouble is found, replace ECBM.

Code 54 and/or 74

Go to Chart A12 If no trouble is found while performing tests on Chart A12, do not go to chart F Instead go to Chart G Solenoid Valves. Perform solenoid valve test for rear valves. If no trouble is found, replace ECBM.