Diagnostic Procedure 14 — Engine stalls during deceleration (Cont'd)

(D) — continued from previous page

CHECK EXHAUST GAS SENSOR. With CONSULT: Run engine at approximately 2,000 rpm after warm-up. Conduct "MIXTURE RATIO" test with "FUNCTION TEST" showing on display or proceed as follows: Select "EXH GAS SEN" with "DATA MONITOR" showing on display. Run engine at 2,000 rpm under no load after warm-up. Check to ensure display alternately shows "LEAN" and "RICH" at least 5 times within 10 seconds. RICH→LEAN→RICH→LEAN→RICH... (1 time = LEAN→RICH; 2 times). Without CONSULT: Set body-side diagnostic connector (inside fuse box) in "Exhaust gas sensor monitor" mode. (Refer to "Self-Diagnosis"). Run engine at 2,000 rpm under no load after warm-up. Check to ensure RED L.E.D. on E.C.U. flashes at least 5 times within 10 seconds.

CHECK COMPRESSION PRESSURE. Standard value: 1,324 kPa (13.24 bar, 13.5 kg/cm², 192 psi)/350 rpm. Limit value: 1,128 kPa (11.28 bar, 11.5 kg/cm², 164 psi)/350 rpm. Pressure difference tolerance among cylinders: 98 kPa (0.98 bar, 1.0 kg/cm², 14 psi)/350 rpm.

CHECK E.C.U. HARNESS CONNECTOR. Check E.C.U. pin terminals and harness connector for poor contact or damage.

Check E.C.U. power supply and ground circuit. Refer to "Main Power Supply and Ground Circuit". (See page EF&EC-128)

Replace E.C.U.