Isuzu N 2008 Series Workshop Manual page 300

Step
Repair the open circuit or high resistance on the
CAN Low and High circuits (which ever voltage
reading did not read within the specified value at
5
Step 4) between the TCM (pins 12 and 13 of B112)
and the CAN joint connectors.
Did you complete the repair?
1. Inspect for
connections and corrosion at the harness
connector of the TCM (pins 12 and 13 of
6 B112).
2. Repair the connection(s) as necessary.
Did you find and correct the condition?
Important: Replacement
programmed and learned.
Replace the TCM. Refer to TCM in Section 5A
7
Transmission Control System in Section 5A
Transmission Control System.
Did you complete the replacement?
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.
8
5. Operate the vehicle within the Conditions for
Running the DTC. You may also operate the
vehicle within
observed from the Freeze Frame/ Failure
Records.
Did the DTC fail this ignition?
Observe the DTC information with a scan tool.
9
Are there any DTCs that you have not diagnosed?
Action
an intermittent, for
TCM must
all previously disconnected
the conditions that
Engine Control System (4JJ1)
Value(s)
—
poor
—
be
—
—
you
—
Yes
Go to Step 8
Go to Step 8 Go to Step 7
Go to Step 8
Go to Step 2 Go to Step 9
Go to DTC List
1A-297
No
—
—
System OK