6-42 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16/J20 ENGINES)
Inspection of PCM (ECM) and Its Circuits
PCM (ECM) and its circuits can be checked at PCM (ECM) wiring
couplers by measuring voltage, pulse signal and resistance.
VOLTAGE CHECK
1) Remove PCM (ECM) cover from bracket referring to “Engine
Control Module (ECM)/Powertrain Control Module (PCM)” in
Section 6E1.
2) Check voltage at each terminal of couplers connected, using
voltmeter (1) and oscilloscope (2).
CAUTION:
PCM/ECM cannot be checked by itself. It is strictly pro-
hibited to connect voltmeter or ohmmeter to PCM (ECM)
with couplers disconnected from it.
NOTE:
• As each terminal voltage is affected by the battery volt-
age, confirm that it is 11 V or more when ignition
switch is ON.
• Voltage with asterisk (*) cannot be measured by volt-
meter because it is pulse signal.
• Check it with oscilloscope if necessary.
2
1
1. PCM (ECM)
2. PCM (ECM) connector (Viewed from harness side)
Содержание Engine 2002 GRAND VITARA SQ625
Страница 5: ......
Страница 248: ...ENGINE GENERAL INFORMATION AND DIAGNOSIS H25 ENGINE 6 1 107 Fig for Step 4...
Страница 274: ...ENGINE GENERAL INFORMATION AND DIAGNOSIS H25 ENGINE 6 1 133 Fig and Table for Step 3...
Страница 291: ...6 1 150 ENGINE GENERAL INFORMATION AND DIAGNOSIS H25 ENGINE...
Страница 360: ...ENGINE MECHANICAL G16 ENGINE 6A1 69 Main Bearings Crankshaft and Cylinder Block COMPONENTS...
Страница 489: ...6A2 114 ENGINE MECHANICAL H25 ENGINE...
Страница 572: ...ENGINE MECHANICAL J20 ENGINE 6A4 83 Main Bearings Crankshaft and Cylinder Block COMPONENTS...
Страница 591: ...6A4 102 ENGINE MECHANICAL J20 ENGINE...
Страница 598: ...ENGINE COOLING 6B 7...
Страница 623: ...6B 32 ENGINE COOLING...
Страница 635: ...6E1 4 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES ENGINE AND EMISSION CONTROL SYSTEM DIAGRAM FOR G16 ENGINE...
Страница 637: ...6E1 6 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES ENGINE AND EMISSION CONTROL SYSTEM DIAGRAM FOR J20 ENGINE...
Страница 643: ...6E1 12 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES ELECTRONIC CONTROL SYSTEM COMPONENT LOCATION FOR G16 ENGINE...
Страница 645: ...6E1 14 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES ELECTRONIC CONTROL SYSTEM COMPONENT LOCATION FOR J20 ENGINE...
Страница 693: ...6E1 62 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES...
Страница 697: ...6E2 4 ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE ENGINE AND EMISSION CONTROL SYSTEM DIAGRAM...
Страница 743: ...6E2 50 ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE...
Страница 814: ...CHARGING SYSTEM 6H 21 Disassembly 70 A and 80 A types...
Страница 827: ...6H 34 CHARGING SYSTEM...
Страница 833: ...6K 6 EXHAUST SYSTEM...
Страница 834: ...Prepared by 1st Ed Dec 2002 Printed in Japan 824...