YH4
GRAND
VITARA
6-100
ENGINE DIAGNOSIS (G16 / J20 ENGINES)
13 – 16
at
20
_
C, 68
_
F
1. Main relay
2. Injector No.1
3. Injector No.2
4. Injector No.3
5. Injector No.4
6. To ignition switch
TABLE B-2 FUEL INJECTORS AND CIRCUIT INSPECTION
WIRING DIAGRAM
INSPECTION
STEP
ACTION
YES
NO
1
Check Injector for Operating Sound.
Using sound scope, check each injector for
operating sound at engine cranking.
Do all 4 injectors make operating sound?
Go to Step 2.
Go to Step 3.
2
Wire Harness Check:
1) Remove ECM (PCM) cover and disconnect
connectors from ECM (PCM).
2) Check for resistance between following terminals
of ECM (PCM) connector disconnected.
C51-2-1 – C51-3-4
C51-2-2 – C51-3-4
C51-2-8 – C51-3-4
C51-2-9 – C51-3-4
Is check result as specified?
Fuel injector circuit
is in good condition.
“P”, “P / B”, “P / G” and
“P / Bl” shorted each
other.
3
Does none of 4 injectors make operating sound
at Step 1?
Go to Step 4.
Check coupler connec-
tion and wire harness of
injector not making oper-
ating sound and injector
itself (Refer to “Fuel
Injector Inspection” in
Section 6E1).
4
Check power circuit of injectors for open and short.
Is it normal?
Check all 4 injectors
for resistance
respectively.
If resistance is OK,
substitute a known-
good ECM (PCM)
and recheck.
Power circuit open or
short.
Summary of Contents for 2000 Grand Vitara SQ416
Page 75: ...ENGINE DIAGNOSIS G16 J20 ENGINES 6 71 Fig 1 for Step 3...
Page 179: ...6 1 68 ENGINE H25 ENGINE a Fig for STEP 2 3 a HO2S heater relay...
Page 190: ...ENGINE H25 ENGINE 6 1 79 a Fig for STEP 2 3 a HO2S heater relay...
Page 541: ...6E1 4 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES G16 ENGINE...
Page 542: ...ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES 6E1 5...
Page 543: ...6E1 6 ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES J20 ENGINE...
Page 544: ...ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES 6E1 7...
Page 552: ...ENGINE AND EMISSION CONTROL SYSTEM G16 J20 ENGINES 6E1 15...
Page 592: ...6E2 4 ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE...
Page 593: ...ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE 6E2 5...
Page 597: ...ENGINE AND EMISSION CONTROL SYSTEM H25 ENGINE 6E2 9...
Page 723: ...6H 30 CHARGING SYSTEM 17 Make sure that rotor turns smoothly...