Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 40
4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS
6E–155
Diagnostic Trouble Code (DTC) P0251 (Symptom Code B) (Flash Code 53)
Injection Pump Malfunction
Step
Action
Value(s)
Yes
No
1
Was the “On-Board Diagnostic (OBD) System Check”
performed?
—
Go to Step 2
Go 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 P0251 (Symptom Code B) stored as
“Present Failure”?
—
Go to Step 3
Refer 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 P0251 (Symptom Code B) stored in this
ignition cycle?
—
Go to Step 4
Refer to
Diagnostic Aids
4
Replace the injection pump assembly.
Is the action complete?
—
Verify repair
—
6E–156
4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0251 (Symptom Code D) (Flash Code 53)
Injection Pump Malfunction
Step
Action
Value(s)
Yes
No
1
Was the “On-Board Diagnostic (OBD) System Check”
performed?
—
Go to Step 2
Go 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 P0251 (Symptom Code D) stored as
“Present Failure”?
—
Go to Step 3
Refer 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 P0251 (Symptom Code D) stored in this
ignition cycle?
—
Go to Step 4
Refer to
Diagnostic Aids
4
Replace the injection pump assembly.
Is the action complete?
—
Verify repair
—
4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS
6E–157
Diagnostic Trouble Code (DTC) P0251 (Symptom Code E) (Flash Code 53)
Injection Pump Malfunction
Step
Action
Value(s)
Yes
No
1
Was the “On-Board Diagnostic (OBD) System Check”
performed?
—
Go to Step 2
Go 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 P0251 (Symptom Code E) stored as
“Present Failure”?
—
Go to Step 3
Refer 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 P0251 (Symptom Code E) stored in this
ignition cycle?
—
Go to Step 4
Refer to
Diagnostic Aids
4
Was the DTC P1650 (Symptom Code A) or P1651
(Symptom Code B) stored at the same time?
—
Go to DTC
Chart P1650
(Symptom
Code A)
Go to Step 5
5
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 6
6
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 immobiliser system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobiliser System-ECM replacement” for
the ECM/Immobiliser linking procedure.
—
Go to Step 7
Go to Step 8
7
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 immobiliser system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobiliser System-ECM replacement” for
the ECM/Immobiliser linking procedure.
—
Verify repair
—
8
Replace the injection pump assembly.
Is the action complete?
—
Verify repair
—
6E–158
4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS
DIAGNOSTIC TROUBLE CODE (DTC) P0335 (SYMPTOM CODE B)
(FLASH CODE 43)CRANKSHAFT POSITION SENSOR CIRCUIT MALFUNCTION
DIAGNOSTIC TROUBLE CODE (DTC) P0335 (SYMPTOM CODE D)
(FLASH CODE 43) CRANKSHAFT POSITION SENSOR MALFUNCTION
DIAGNOSTIC TROUBLE CODE (DTC) P0335 (SYMPTOM CODE E)
(FLASH CODE 43) ENGINE SPEED INPUT CIRCUIT RANGE/PERFORMANCE
0.5
BLK
0.5
GRN/
BLK
69
0.5
RED/
GRN
49
0.5
GRN/
ORG
38
0.5
BLK/
GRN
57
2.0
BLK
1
2.0
BLK
2
0.5
BLK/
PNK
93
0.5
GRY
ECT
Sensor
TPS &
Idle SW
89
0.5
WHT
98
101
0.5
GRN/
RED
CKP
Sensor
90
IC
IC
IC
IC
Engine
Control
Module
(ECM)
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