Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 194

TERMINAL
E61-1 (without immobi-
lizer control system)/E61-
20 (with immobilizer con-
trol system) – C51-2-3
E61-5 – C51-2-3
E61-8 – E61-35
E61-12 – Body ground
C51-3-2 – C51-3-3
C51-3-8 – C51-3-21
C51-3-22 – C51-3-21
C51-1-1 – Body ground
C51-1-2 – Body ground
C51-1-6 – Body ground
C51-1-8 – C51-1-16
C51-1-9 – C51-1-10
C51-2-1 – C51-2-20
C51-2-5 – C51-2-20
C51-2-4 – C51-2-20
C51-2-17 – C51-2-20
C51-2-16 – C51-2-20
ENGINE GENERAL INFORMATION AND DIAGNOSIS (H25 ENGINE) 6-1-53
RESISTANCE CHECK
1) Disconnect ECM couplers (1) from ECM with ignition switch
OFF.
CAUTION:
Never touch terminals of ECM itself or connect voltmeter
or ohmmeter (2).
2) Check resistance between each pair of terminals of discon-
nected couplers as listed in following table.
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 represents that when parts temper-
ature is 20°C (68°F).
CIRCUIT
Fuel pump relay
A/C condenser fan motor relay (if
equipped)
Main relay
Fuel level sensor
CKP sensor (if equipped)
IAT sensor
ECT sensor
Shift solenoid-B
TCC solenoid
Shift solenoid-A
A/T input speed sensor
A/T output speed sensor
EVAP canister purge valve
EGR valve (stepper motor coil 1) (if
equipped)
EGR valve (stepper motor coil 2) (if
equipped)
EGR valve (stepper motor coil 3) (if
equipped)
EGR valve (stepper motor coil 4) (if
equipped)
STANDARD
RESISTANCE
Ω
160 – 240
Battery disconnected
Ω
75 – 110
and ignition switch ON.
Ω
160 – 240
Ω
117.5 – 122.5 Fuel level is Empty.
Ω
1.5 – 4.5 Fuel level is Full.
Ω
485 – 655
Ω
2.09 – 2.81 k
Engine coolant temp. :
Ω
303 – 326
80°C (176°F)
Ω
11 – 15
Ω
560 – 680
Ω
369 – 451
Ω
28 – 36
Ω
20 – 24
CONDITION
–
–
–
–
–
–
–
–
–