2004 ISUZU TF SERIES Workshop Manual

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Page 1545 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E –173
Diagnostic Trouble Code (DTC) P0215 (Sy mptom Code B) (Flash Code 52) Fuel
Cutoff Solenoid Valve Circuit High Input
Step Action Value(s) Yes No

Page 1546 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6E –174 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
6 Using the DVM and check the MAB (fuel cutoff
solenoid valve) circuit.
Breaker box is available:
1. Ignition “Off ”, engine “Off ”.

Page 1547 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E –175
Diagnostic Trouble Code (DTC) P0215 (Sy mptom Code C) (Flash Code 52) Fuel
Cutoff Solenoid Valve Always Active
Step Action Value(s) Yes No
1Was

Page 1548 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6E –176 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
6 Using the DVM and check the MAB (fuel cutoff
solenoid valve) circuit.
Breaker box is available:
1. Ignition “Off ”, engine “Off ”.

Page 1549 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–177
Diagnostic Trouble Code (DTC) P0215 (Sy mptom Code D) (Flash Code 52) Fuel
Cutoff Solenoid Valve Malfunction
Step Action Value(s) Yes No
1Was the

4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–177
Diagnostic Trouble Code (DTC) P0215 (Sy mptom Code D) (Flash Code 52) Fuel
Cutoff Solenoid Valve Malfunction
Step Action Value(s) Yes No
1Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go to Step 2Go to On Board
Diagnostic
(OBD) System
Check
2 1. Connect the Tech 2.
2. Review and record the failure information.
3. Select “F0: Read DTC Infor As Stored By ECU” in
“F0: Diagnostic Trouble Codes”.
Is the DTC P0215 (Symptom Code D) stored as
“Present Failure”?—Go to Step 3Refer to
Diagnostic Aids
and Go to Step
3
3 1. Using the Tech 2, ignition “On” and engine “Off”.
2. Select “F1: Clear DTC Information” in “F0:
Diagnostic Trouble Codes” with the Tech 2 and
clear the DTC information.
3. Operate the vehicle and monitor the “F0: Read
DTC Infor As Stored By ECU” in the “F0:
Diagnostic Trouble Codes”.
Was the DTC P0215 (Symptom Code D) stored in this
ignition cycle?—Go to Step 4Refer to
Diagnostic Aids
4 Is the ECM programmed with the latest software
release?
If not, download the latest software to the ECM using
the “SPS (Service Programming System)”.
Was the problem solved?—Verify repair Go to Step 5
5 Substitute a known good ECM and recheck.
Was the problem solved?
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual.
Following ECM programming, the immobilizer system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobilizer System-ECM replacement” for
the ECM/Immobilizer linking procedure. —Go to Step 6Go to Step 7
6 Replace the ECM.
Is the action complete?
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual.
Following ECM programming, the immobilizer system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobilizer System-ECM replacement” for
the ECM/Immobilizer linking procedure.—Verify repair—
7 Replace the injection pump assembly.
Is the action complete?—Verify repair—

Page 1550 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6E–178 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
DIAGNOSTIC TROUBLE CODE (DTC) P0216 (SYMPTOM CODE A) (FLASH
CODE 54) INJECTION TIMING CONTROL CIRCUIT MALFUNCTION
DIAGNOSTIC TROUBLE CODE (DTC) P0

Page 1551 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–179
Circuit Description
The ECM is calculates an injection quantity and an
injection timing using the various sensors (crankshaft
position sensor, cams

4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–179
Circuit Description
The ECM is calculates an injection quantity and an
injection timing using the various sensors (crankshaft
position sensor, camshaft position sensor, engine
coolant temperature sensor, etc.). The timing control
valve (TCV) operation performs an injection timing
decision.
The TCV performs as a variable throttle, using the rapid
opening and closing cycle of the valve needle in the
TCV.
The TCV is assembled in the injection pump. The signal
of desired injection timing and actual injection timing are
ex changed via the CAN-bus between the PSG and
ECM.
If the timer position is out of tolerance (deviation or
fluctuation), DTC P0216 will be stored.
Diagnostic Aids
An intermittent may be caused by the following:
Poor connections.
Misrouted harness.
Rubbed through wire insulation.
Broken wire inside the insulation.
Insufficient air bleeding of fuel line.
Low fuel quantity in the fuel tank.
Check for the following conditions:
Insufficient air bleeding of fuel line inside, clogged
fuel filter or pinched fuel pipe/hose may cause the
DTC store or improper engine performance.Air bleeding procedure:
1.Operate the priming pump until strong resistance is
felt.
2.Wait 1 minute, and operate the priming pump until
strong resistance is felt.
3.Wait 1 minute, and operate the priming pump until
strong resistance is felt.
4.Turn the ignition switch to the "ON" position. Wait
until the glow indicator lamp turns off.
5.Turn the ignition switch to the "START" position and
crank the engine until it starts.
6.If the engine does not start, repeat Step 3 - 5.
7.Allow the engine to idle for 3 minutes to bleed air
completely form the fuel system and check for fuel
leakage.
Poor connection at ECM and PSG-Inspect harness
connectors for backed out terminals, improper
mating, broken locks, improperly formed or damaged
terminals, and poor terminal to wire connection.
Damaged harness-Inspect the wiring harness for
damage. If the harness appears to be OK, observe
the "Actual Injection Start" display on the Tech2 while
moving connectors and wiring harness related to the
sensor.

Page 1552 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6E–180 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0216 (Symptom Code A) (Flash Code 54)
Injection Timing Control Circuit Malfunction
Diagnostic Trouble Code (DTC) P0

6E–180 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0216 (Symptom Code A) (Flash Code 54)
Injection Timing Control Circuit Malfunction
Diagnostic Trouble Code (DTC) P0216 (Symptom Code B) (Flash Code 54)
Injection Timing Control Circuit Malfunction
Step Action Value(s) Yes No
1 Was the "On-Board Diagnostic (OBD) System Check"
performed?
-Go to Step 2Go to On Board
Diagnostic
(OBD) System
Check
2 1. Connect the Tech 2.
2. Review and record the failure information.
3. Select "F0: Read DTC Infor As Stored By ECU" in
"F0: Diagnostic Trouble Codes".
Is the DTC P0216 (Symptom Code A) or P0216
(Symptom Code B) stored as "Present Failure"? - Go to Step 3Refer to
Diagnostic Aids
and Go to Step
3
3 1. 1Using the Tech 2, ignition "On" and engine "Off".
2. Select "F1: Clear DTC Information" in "F0:
Diagnostic Trouble Codes" with the Tech 2 and
c l e a r t h e D T C i n f o r m a t i o n .
3. Operate the vehicle and monitor the "F0: Read
DTC Infor As Stored By ECU" in the "F0:
Diagnostic Trouble Codes".
Was the DTC P0216 (Symptom Code A) or P0216
(Symptom Code B) stored in this ignition cycle? - Go to Step 4Refer to
Diagnostic Aids
and Go to Step
4
4 Perform the air bleeding in the fuel line sufficiently.
A ir Bleeding Procedure:
1. Operate the priming pump until strong resistance
is felt.
2. Wait 1 minute, and operate the priming pump until
strong resistance is felt.
3. Once more wait, and operate the priming pump
until strong resistance is felt.
4. Turn the ignition switch to the "ON" position. Wait
until the glow indicator lamp turns off.
5. Turn the ignition switch to the "START" position
and crank the engine until it starts.
6. If the engine does not start, repeat Step 3 - 5.
7. Allow the engine to idle for 3 minutes to bleed air
completely form the fuel system and check for fuel
leakage.
DTC Re-check:
1. Using the Tech 2, ignition "On" and engine "Off".
2. Select "F1: Clear DTC Information" in "F0:
Diagnostic Trouble Codes" with the Tech 2 and
c l e a r t h e D T C i n f o r m a t i o n .
3. Operate the vehicle and monitor the "F0: Read
DTC Infor As Stored By ECU" in the "F0:
Diagnostic Trouble Codes".
Was the DTC P0216 (Symptom Code A) or P0216
(Symptom Code B) restored in this ignition cycle? - Go to Step 5Verify repair

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