Isuzu 2008MY N Series Workshop Manual page 108

Step
1. Reconnect
harness connector(s).
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Start the engine.
12
5. Operate the vehicle within the Conditions for
Running the DTC. You may also operate the
vehicle
observed from the Freeze Frame/ Failure
Records.
Did the DTC fail this ignition?
Observe the DTC Information with a scan tool.
13
Are there any DTCs that you have not
diagnosed?
Circuit/ System Testing DTC P0108
Step
Did you perform the Diagnostic System Check
1
- Engine Controls?
1. Install a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Start the engine.
4. Observe
2
parameter with a scan tool.
Is the Boost Pressure Sensor parameter more
than the specified value?
Monitor the DTC Information with a scan tool.
3
Is DTC P0697 also set?
1. Turn OFF the ignition.
2. Disconnect
harness connector.
4
3. Turn ON the ignition, with the engine OFF.
Is the Boost Pressure Sensor parameter less
than the specified value?
1. Turn OFF the ignition.
2. Disconnect
harness connector.
5
3. Turn ON the ignition, with the engine OFF.
Is the Boost Pressure Sensor parameter less
than the specified value?
Connect a test lamp between the low reference
circuit (pin 2 of E-24) and battery voltage.
6
Does the test lamp illuminate?
Action
all previously disconnected
within the conditions
Action
the Boost Pressure
the boost pressure
the boost pressure
Engine Control System (4HK1)
Value(s)
—
that you
—
Value(s)
—
Sensor 4.9 volts
—
sensor
0.1 volts
sensor
0.1 volts
—
Yes
Go to Step 3
Go to DTC List
Yes
Go to Diagnostic
System Check -
Go to Step 2 Engine Controls
Go to Diagnostic
Go to Step 3
Go to Step 4
Go to DTC P0697
Go to Step 6
Go to Step 9
1A-105
No
Go to Step 13
System OK
No
Aids
Go to Step 5
Go to Step 7
Go to Step 7
Go to Step 8