Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 337
6E–378
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0602 PCM Programming Error
060RY014
Circuit Description
The powertrain control module (PCM) uses Main CPU
and Watchdog CPU software/calibration.
Conditions for Setting the DTC
D
This code detects inconsistencies between Main CPU
and Watchdog CPU software/calibration.
Action Taken When the DTC Sets
D
The PCM will not illuminate the malfunction indicator
lamp (MIL).
D
The PCM will store conditions which were present
when the DTC was set in the Failure Records data only.
Conditions for Clearing the MIL/DTC
D
The PCM will turn the MIL “OFF” on the third
consecutive trip cycle during which the diagnostic has
been run and the fault condition is no longer present.
D
A history DTC P0602 will clear after 40 consecutive
warm-up cycles have occurred without a fault.
D
DTC P0602 can be cleared by using the Tech 2 “Clear
Info” function or by disconnecting the PCM battery
feed.
6E–379
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P0602 – PCM Programming Error
Step
Action
Value(s)
Yes
No
1
Was the “On-Board Diagnostic (OBD) System Check”
performed?
—
Go to
Step 2
Go to
OBD
System
Check
2
Replace the PCM.
IMPORTANT: The replacement PCM must be
programmed. Refer to
On-Vehicle Service in
Powertrain Control Module and Sensors for
procedures.
ANd also refer to latest Service Bulletin.
Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.
Is the action complete?
—
Verify repair
—
6E–380
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0604 PCM RAM Error
060RY014
Circuit Description
The powertrain control module (PCM) uses Main CPU
RAM and Watchdog CPU RAM.
Conditions for Setting the DTC
D
This code detects inconsistencies between Main CPU
RAM and Watchdog CPU RAM.
Action Taken When the DTC Sets
D
The PCM will not illuminate the malfunction indicator
lamp (MIL).
D
The PCM will store conditions which were present
when the DTC was set in the Failure Records data only.
Conditions for Clearing the MIL/DTC
D
The PCM will turn the MIL “OFF” on the third
consecutive trip cycle during which the diagnostic has
been run and the fault condition is no longer present.
D
A history DTC P0604 will clear after 40 consecutive
warm-up cycles have occurred without a fault.
D
DTC P0604 can be cleared by using the Tech 2 “Clear
Info” function or by disconnecting the PCM battery
feed.
6E–381
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P0604 – PCM RAM Error
Step
Action
Value(s)
Yes
No
1
Was the “On-Board Diagnostic (OBD) System Check”
performed?
—
Go to
Step 2
Go to
OBD
System
Check
2
Replace the PCM.
IMPORTANT: The replacement PCM must be
programmed. Refer to
On-Vehicle Service in
Powertrain Control Module and Sensors for
procedures.
ANd also refer to latest Service Bulletin.
Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.
Is the action complete?
—
Verify repair
—
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