Suzuki Wagon R Plus RB310, Service Manual

Page: 227 / 846

6-2-52 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
Resistance Check
1) Disconnect ECM couplers (1) from ECM with ignition switch
OFF.
2) Check resistance between each pair of terminals of discon-
nected couplers as listed in the following table.
CAUTION:
Never touch terminals of ECM itself or connect voltmeter
or ohmmeter (2).
CAUTION:
• Be sure to connect ohmmeter probe from wire harness
side of coupler.
• Be sure to turn OFF ignition switch for this check.
• Resistance in table below represents that when parts
temperature is 20°C (68°F).
TERMINALS CIRCUIT STANDARD
RESISTANCE
CONDITION
E23-3 to E21-28 Heater of HO2S–2 4 – 15
Ω
–
E21-4 to E21-5/6 Radiator fan relay 160 – 240
Ω
–
E23-15 to E21-28 Main relay 160 – 240
Ω
Battery discon-
nected and ignition
switch ON
E23-14 to E21-28 Fuel pump relay 160 – 240
Ω
–
E23-5 to E21-5/6 A/C condenser fan relay No.2 (if
equipped) 100 – 150
Ω
–
E22-5 to E21-5/6 No.3 fuel injector 10.8 – 18.2
Ω
–
E22-4 to E21-5/6 No.4 fuel injector
E23-17 to E21-5/6 EGR valve (stepping motor No.1 coil) 20 – 29
Ω
–
E23-13 to E21-5/6 EVAP canister purge valve 28 – 35
Ω
–
E22-6 to E21-5/6 No.2 fuel injector 10.8 – 18.2
Ω
–
E23-34 to E21-5/6 EGR valve (stepping motor No.2 coil) 20 – 31
Ω
–
E23-33 to E21-5/6 EGR valve (stepping motor No.4 coil)
E23-16 to E21-5/6 EGR valve (stepping motor No.3 coil)
E23-4 to E21-28 Heater of HO2S–1 2 – 11
Ω
–
E22-7 to E21-5/6 No.1 fuel injector 10.8 – 18.2
Ω
–
E23-8 to E21-5/6 Idle air control valve 24 – 35
Ω
–
E23-11 to E21-5/6 A/C compressor relay (if equipped) 160 – 240
Ω
–
E22-2 to E22-3 Oil control valve 6 – 15
Ω
–