Dtc P0602 (Flash Code 154) - Isuzu N 2008 Series Workshop Manual

DTC P0602 (Flash Code 154)

Circuit Description
The electrically erasable & programmable read only
memory (EEPROM) memorizes fuel injector ID code
information. If the ECM detects fuel injector ID codes
are not programmed into the ECM or an error in the
programmed fuel injector ID codes, this DTC will set.
Condition for Running the DTC
• The ignition switch is ON.
Condition for Setting the DTC
Either of following condition is met:
• The ECM detects that the fuel injector ID code is
not programmed.
• The ECM detects an error in the programmed fuel
injector ID code.
Circuit/ System Testing DTC P0602
Step
Did you perform the Diagnostic System Check -
1 Engine Controls?
1. Ensure that all tool connections are secure.
2. Ensure
operating correctly.
3. Install a scan tool.
2
4. Turn OFF the ignition for 30 seconds.
5. Turn ON the ignition, with the engine OFF.
6. Monitor the DTC Information with a scan tool.
Does the DTC fail this ignition?
1. Verify the correct fuel injector ID codes are
entered into the ECM with a scan tool. Refer
to ECM Replacement. If the fuel injector ID
codes are correctly entered, clear the DTC
with a scan tool.
3
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
Does the DTC fail this ignition?
Important:
programmed and learned.
4
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement?
Action
that programming equipment
Replacement ECM
Engine Control System (4JJ1)
Action Taken When the DTC Sets
• The ECM illuminates SVS lamp when the
diagnostic runs and fails. Refer to DTC Type
Definitions for Action Taken When the DTC Sets -
Type C. (Euro 4 specification)
• The ECM illuminates the MIL when the diagnostic
runs and fails. Refer to DTC Type Definitions for
Action Taken When the DTC Sets - Type A.
(Except Euro 4 specification)
Condition for Clearing the DTC
• Refer to DTC Type Definitions for Condition for
Clearing the SVS Lamp/ DTC - Type C. (Euro 4
specification)
• Refer to DTC Type Definitions for Condition for
Clearing the MIL/ DTC - Type A. (Except Euro 4
specification)
Notice: Clear the DTC with a scan tool after
programming the fuel injector ID code.
Value(s)
—
is
—
—
must be
—
Yes
Go to Diagnostic
System Check -
Go to Step 2 Engine Controls
Go to Step 3 Go to Step 5
Go to Step 4 Go to Step 5
Go to Step 5
1A-195
No
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