Isuzu 1999 RODEO Workshop Manual page 690

Injector Coil Test Procedure (Steps 1–6) And Injector Balance Test Procedure
Step
5 1. Set the injector switch box to injector #1.
2. Press the "Push to Start Test" button on the fuel
injector tester.
3. Observe the voltage reading on the DVM.
IMPORTANT: The voltage reading may rise during the
test.
4. Record the lowest voltage observed after the first
second of the test.
5. Set the injector switch box to the next injector and
repeat steps 2, 3, and 4.
Did any fuel injector have an erratic voltage reading
(large fluctuations in voltage that did not stabilize) or a
voltage reading above the specified value?
6 1. Identify the highest voltage reading recorded (other
than those above 9.5 V).
2. Subtract the voltage reading of each injector from
the highest voltage selected in step 1. Repeat until
you have a subtracted value for each injector.
For any injector, is the subtracted value in step 2
greater than the specified value?
7 CAUTION: In order to reduce the risk of fire and
personal injury, wrap a shop towel around the
fuel pressure connection. The towel will absorb
any fuel leakage that occurs during the
connection of the fuel pressure gauge. Place the
towel in an approved container when the
connection of the fuel pressure gauge is
complete.
1. Connect the J 34730–1 Fuel Pressure Gauge to the
fuel pressure test port.
2. Energize the fuel pump using the Tech 2.
3. Place the bleed hose of the fuel pressure gauge into
an approved gasoline container.
4. Bleed the air out of the fuel pressure gauge.
5. With the fuel pump running, observe the reading on
the fuel pressure gauge.
Is the fuel pressure within the specified values?
8 Turn the fuel pump OFF.
Does the fuel pressure remain constant?
RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
(Steps 7–11) (Cont'd)
Action Value(s) Yes
9.5 V Go to Step 4
0.6 V Go to Step 4
296 kPa– 376
kPa (43–55
Go to Step 8
psi)
— Go to Step 9
6E1–63
No
Go to Step 6
Go to Step 7
Go to Fuel
System
Diagnosis
Go to Fuel
System
Diagnosis