Resistance Check - Suzuki 2000 Grand Vitara SQ625 Service Manual

6-40 ENGINE DIAGNOSIS (G16 / J20 ENGINES)
1. ECM / PCM coupler disconnected
2. Ohmmeter
TERMINALS
E61-3 and C51-3-20
E61-9 and E61-2
E61-22 and C51-3-20
E61-23 and C51-3-20
C51-3-6 and Body ground
C51-3-17 and Body ground
C51-1-1 and Body ground
C51-1-2 and Body ground
C51-1-8 and Body ground
C51-2-1- and C51-3-4
C51-2-2 and C51-3-4
C51-2-3 and C51-3-4
C51-2-4 and C51-3-20
C51-2-8 and C51-3-4
C51-2-9 and C51-3-4
C51-2-10 and C51-3-4
C51-2-11 and C51-3-4
C51-2-12 and C51-3-4
C51-2-13 and C51-3-4
C51-2-14 and C51-3-4
C51-2-15 and C51-3-4
C51-2-16 and C51-3-4
C51-2-17 and C51-3-4
C51-2-28 and Body ground

Resistance Check

1) Disconnect couplers from ECM/PCM with ignition switch OFF.
2) Check resistance between each pair of terminals of discon-
CIRCUIT
Heater of HO2S-2 (if equipped)
Main relay
A / C fan motor relay (if equipped)
Fuel pump relay
Ground
Ground
Shift solenoid B (A / T)
Shift solenoid A (A / T)
TCC solenoid (A / T)
Fuel injector No.2
Fuel injector No.1
IAC valve (stepper motor coil 1)
Heater of HO2S-1 (if equipped)
Fuel injector No.4
Fuel injector No.3
IAC valve (stepper motor coil 4)
IAC valve (stepper motor coil 3)
IAC valve (stepper motor coil 2)
EGR valve (stepper motor coil 4)
(if equipped)
EGR valve (stepper motor coil 3)
(if equipped)
EGR valve (stepper motor coil 2)
(if equipped)
EGR valve (stepper motor coil 1)
(if equipped)
EVAP canister purge valve
Ground
CAUTION:
Never touch terminals of ECM/PCM itself or connect
voltmeter or ohmmeter.
nected couplers as listed in the following table.
CAUTION:
D Be sure to connect ohmmeter probe from wire harness
side of coupler.
D Be sure to turn OFF ignition switch for this check.
D Resistance in table represents that when parts temper-
ature is 20_C (68_F).
STANDARD RESISTANCE
11.7 – 14.3 W
79 – 95 W
Battery disconnected
75 – 110 W
and ignition switch ON
79 – 95 W
Continuity
Continuity
11 – 15 W
13 – 16 W 16 W
13
35 – 43 W
5 – 6.4 W
13 – 16 W 16 W
13
35 – 43 W
20 – 24 W 24 W
20
28 – 35 W
Continuity
CONDITION
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