Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 169
6E–280
4JH1 ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P1625 (Symptom Code B) (Flash Code 76) ECM
Main Relay Switched Off Too Late
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 P1625 (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 P1625 (Symptom Code B) stored in this
ignition cycle?
—
Go to Step 4
Refer to
Diagnostic Aids
4
Using the DVM and check the ECM main relay.
1. Ignition “Off”, engine “Off”.
2. Remove the ECM main relay from the relay box.
3. Check the relay switch.
Was the DVM indicated specified value?
No continuitly
Go to Step 5
Replace ECM
main relay and
verify repair
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
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
—
1
2
ECM
Main Relay
4JH1 ENGINE DRIVEABILITY AND EMISSIONS
6E–281
DIAGNOSTIC TROUBLE CODE (DTC) P1630 (SYMPTOM CODE A)
(FLASH CODE 51) FUEL INJECTION QUANTITY CIRCUIT MALFUNCTION
DIAGNOSTIC TROUBLE CODE (DTC) P1630 (SYMPTOM CODE B)
(FLASH CODE 51) FUEL INJECTION QUANTITY CIRCUIT MALFUNCTION
Condition for setting the DTC and action taken when the DTC sets
Circuit Description
The ECM is calculates an injection quantity and an
injection timing using the various sensors. And the PSG
controls the high pressure solenoid valve depending on
programmed pump map data.
Flash
Code
Code
Symptom
Code
MIL
DTC Name
DTC Setting Condition
Fail-Safe (Back Up)
51
P1630
A
ON
Fuel Injection Quantity Circuit
Malfunction
The PSG (pump control unit)
detects high pressure sole-
noid valve control circuit mal-
function due to high current.
Fuel injection quantity is
reduced.
B
ON
Fuel Injection Quantity Circuit
Malfunction
The PSG (pump control unit)
detects high pressure sole-
noid valve control circuit mal-
function due to continuous
current.
1. MAB (fuel cutoff solenoid
valve) is operated.
2. Desired injection quantity
becomes 0mg/strk.
45
16 15 14 13 12 11 10 9
8 7 6 5 4 3 2 1
Battery
Voltage
Battery
Voltage
0.5
RED/
YEL
2.0
BLU/
RED
7
TCM
A / T
ECM Fuse
PSG(Pump Control Unit)
Injection
Pump
2
1
5
8
0.5
WHT
2.0
BLU/
RED
0.5
BLU/
BLK
0.5
RED
0.5
ORG
100
3
58
99
105
91
0.5
PNK
6
2.0
BLK
µP
CAN
Controller
Batt
Batt
IC
µP
0.5
BLU
Meter
10A
1.25
BLK
µP
Engine
Control
Module
(ECM)
ECM
Main Relay
6E–282
4JH1 ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Aids
An intermittent may be caused by the following:
• Poor connections.
• Misrouted harness.
• Rubbed through wire insulation.
• Broken wire inside the insulation.
Check for the following conditions:
• 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.
Diagnostic Trouble Code (DTC) P1630 (Symptom Code A) (Flash Code 51) Fuel
Injection Quantity Circuit Malfunction
Diagnostic Trouble Code (DTC) P1630 (Symptom Code B) (Flash Code 51) Fuel
Injection Quantity Circuit 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 P1630 (Symptom Code A) or P1630
(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 P1630 (Symptom Code A) or P1630
(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
—
4JH1 ENGINE DRIVEABILITY AND EMISSIONS
6E–283
DIAGNOSTIC TROUBLE CODE (DTC) P1650 (SYMPTOM CODE A)
(FLASH CODE 44) CAN DEVICE OFFLINE
DIAGNOSTIC TROUBLE CODE (DTC) P1650 (SYMPTOM CODE B)
(FLASH CODE 44) CAN DEVICE HANG-UP
Condition for setting the DTC and action taken when the DTC sets
Circuit Description
The interchange of data between the engine control
module (ECM) and the pump control unit (PSG) is
performed via a CAN-bus system. The individual CAN-
bus systems are connected via two interfaces and can
exchange information and data. This allows control
modules that are connected to different CAN-bus
systems to communicate.
Diagnostic Aids
An intermittent may be caused by the following:
• Poor connections.
• Misrouted harness.
• Rubbed through wire insulation.
• Broken wire inside the insulation.
Check for the following conditions:
Flash
Code
Code
Symptom
Code
MIL
DTC Name
DTC Setting Condition
Fail-Safe (Back Up)
44
P1650
A
ON
CAN Device Offline
CAN controller detects Bus-
off or canceling.
MAB (fuel cutoff solenoid
valve) is operated.
B
ON
CAN Device Hang-up
CAN controller does not react
under engine running.
45
16 15 14 13 12 11 10 9
8 7 6 5 4 3 2 1
Battery
Voltage
Battery
Voltage
0.5
RED/
YEL
2.0
BLU/
RED
7
TCM
A / T
ECM Fuse
PSG(Pump Control Unit)
Injection
Pump
2
1
5
8
0.5
WHT
2.0
BLU/
RED
0.5
BLU/
BLK
0.5
RED
0.5
ORG
100
3
58
99
105
91
0.5
PNK
6
2.0
BLK
µP
CAN
Controller
Batt
Batt
IC
µP
0.5
BLU
Meter
10A
1.25
BLK
µP
Engine
Control
Module
(ECM)
ECM
Main Relay
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст