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Isuzu KB P190. Manual - part 1021
7A2-118 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
Circuit/System Testing DTC U2105
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
1. Install the scan tool.
2. Turn “ON” the ignition.
Does the scan tool indicate DTC U2105?
— Go
to
Step 3
Refer to
Diagnostic Aids
3
Observe the data from the ECM on a scan tool.
Was the data from the ECM fixed or did not
synchronized? (throttle opening, engine speed, etc)
— Go
to
Step 4
Refer to
Diagnostic Aids
4
Check the wire between the TCM connector and the
ECM connector by 5-8840-0285-0 DMM.
1. Turn “OFF” the ignition.
2. Disconnect the TCM connector.
3. Measure the resistance between terminal C94-7
and terminal C94-17.
Is the resistance specified value?
About 60
Ω
Go to Step 5
Go to Step 7
5
Check the resistance of the ECM.
1. Turn “OFF” the ignition.
2. Disconnect the ECM connector.
3. Measure the resistance between the ECM terminal
E66-66 and the ECM terminal E66-67.
Is the resistance specified value?
About 120
Ω
Go to Step 6
Go to Step 8
6
Replace or Repair the wire between the TCM
connector C94-7, 17 and the ECM connector E66-66,
67.
Is the action complete?
— Go
to
Step 9 —
7
Replace the TCM.
Important:
The replacement TCM must be
programmed (Refer to SPS for procedure).
Is the action complete?
— Go
to
Step 9 —
8
Replace the ECM.
Important:
The replacement ECM must be
programmed (Refer to SPS for procedure).
Is the action complete?
— Go
to
Step 9 —