2007 ISUZU KB P190 brake

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-9
Schematic and Rounting Diagrams
Fuel System Routing Diagram
Legend1. Fuel rail
2. Fuel pressure limiter
3. Leak off pipe
4. Fuel injector
5. Fuel return pipe
6. Fuel cooler
7. Fuel tank
8. Fuel pump and sender assembly 9. Fuel filler cap
10. Vent valve 11. Fuel feed pipe
12. One-way valve
13. Fuel filter with sedimenter
14. Fuel pressure switch
15. Fuel supply pump

Vacuum Hose Routing Diagram
Legend
1. Swirl control solenoid valve
2. Actuator control vacuum hose
3. Swirl control actuator
4. Brake booster
5. Vacuum pipe
6. Vacuum pump 7. Actuator control vacuum hose
8. Air cleaner
9. Turbocharger nozzle control actuator
10. Solenoid valve ventilation hose 11. Turbocharger nozzle control solenoid valve

RTW76ESF000101
12 3
4
5
117
8
9
10
14
13
12
15
6
RTW76ESF000201
1 2
4
5
6
9
8
3
7
11
High output10

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ISUZU KB P190 2007

6E-26 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
Brake Switch and Cruise Control
RTW76EXF004001
Brake
switch
C-44
4
C-44
3 Cruise
main
switch
Fuse /
relay
box
(Cabin)
4
3
3
1
4
2 0.5
GRY/
GRN
0.5
WHT/
GRN
0.5
GRN/
WHT
0.5
WHT/
GRN 6
12 0.3
GRN/
RED
0.3
RED/
GRN B-67
2
B-67
1
10
13
0.5
GRN/
WHT
H-18
50
0.5
WHT/
GRN
0.5
GRN 6
14
1
21 0.5
BRN/
YEL
9
29 Combination
switch
Set /
coast
switch
Resume /
accel.
switch
Cancel
switch
ECM
0.5
LT GRN
Set /
coast
switch
signal
Resume /
accel.
switch
signal
Cancel
switch
signal
IP cluster
Weld
splice2
Weld
splice 1
Cruise
main
switch
signal
Brake
switch 2
(Cruise release)
Brake
switch 1
(Stop lamp) B-59
C-58
12
30
0.5
WHT/
GRN
B-59
11
0.5
WHT/
GRN
0.5
WHT/
GRN
0.5
WHT/
GRN
0.5
RED
0.85
RED 0.85
GRN
H-7
C-107
9 C-6
Engine
10A
C-15
STOP
15A
Lamp
control
Except
Euro 4
Specification
Euro 4
Specification

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ISUZU KB P190 2007

6E-32 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
Engine Control Module (ECM)-J2
Pin No. Wire ColorPin Function
58 YEL CKP sensor signal
59 PNK Fuel filter switch signal
60 — Not used
61 BLU/ GRN IAT sensor low reference
62 BRN EGR drive voltage
63 YEL EGR control low side
64 BLK CMP sensor shield ground
65 — Not used
66 ORN/ BLK Turbocharger nozzle control
solenoid valve control
67 YEL Swirl control solenoid valve
control
68 WHT FRP sensor signal
69 BLK FRP sensor low reference
70 BLU/ RED FRP regulator low side
71 RED Cylinder #2 fuel injector charge
voltage
72 PNK Cylinder #4 fuel injector charge
voltage
73 BLK Ground
Connector No. C-58
Connector Color Black
Test Adapter No. J-35616-64A
Pin No. Wire Color Pin Function
1 ORN Brake switch 2 signal
2 BLK/ GRN Diagnostic request switch
RTW76ESH003101
12345678910111213141516
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
Pin No. Wire Color
Pin Function
3 RED/ GRN P or N range switch (A/T)
BLK/ WHT Neutral switch (M/T)
4 GRN/ BLK Thermo relay signal
5 — Not used
6 — Not used
7 BLU APP sensor 3 5V reference
8 BL/ UWHT APP sensor 3 signal
9 ORN APP sensor 2 5V reference
10 BLU/ GRN APP sensor 2 signal 11 WHT APP sensor 1 5V reference
12 RED APP sensor 1 signal
13 GRY/ GRN Cruise cancel switch signal
14 WHT/ GRN Cruise main switch signal
15 — Not used
16 — Not used
17 — Not used
18 — Not used
19 YEL Clutch switch signal
20 — Not used
21 RED Brake switch 1 signal
22 — Not used
23 BLU/ RED APP sensor 3 low reference
24 BLK APP sensor 3 shield ground
25 ORN/ BLU APP sensor 2 low reference
26 BLK APP sensor 2 shield ground
27 BLK APP sensor 1 low reference
28 BLK APP sensor 1 shield ground
29 BRN/ YEL Cruise resume switch signal
30 LT GRN Cruise set switch signal
31 — Not used
32 — Not used
33 BLK/ RED Engine speed signal output
34 — Not used
35 ORN/ BLU Starter cut relay control
36 — Not used
37 BLK/ BLU Glow relay control
38 — Not used
39 — Not used
40 — Not used
41 — Not used
42 — Not used

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-35
Brake SwitchClutch Switch
Camshaft Position (CMP) Sensor
Connector No.
E-107
Connector Color Black
Test Adapter No. J-35616-64A
Pin No. Wire Color Pin Function
1 YEL Sensor signal
2 BLU Sensor low reference
3 GRN Sensor 5V reference
Connector No. C-44
Connector Color White
Test Adapter No. J-35616-40 (Pin1-2)
J-35616-2A (Pin3-4)
Pin No. Wire Color Pin Function
1GRN Switch 1 (stop lamp switch)
battery voltage feed
2 RED Switch 1 (stop lamp switch) signal
3 ORN Switch 2 signal
4WHT/ GRN Brake switch 2 ignition voltage
feed
RTW76ESH000801
12
34Connector No. C-77
Connector Color White
Test Adapter No. J-35616-42
Pin No. Wire Color Pin Function
1 WHT/ GRN Ignition voltage feed
2 YEL Switch signal
LNW46ESH000801
1
2
RTW76ESH000701
123

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-49
Cam/ Crank Sensor Signal Synchronization Status Asynchronous/ No
Crank Signal/ Synchronous Synchronous Synchronous
Engine Runtime Time (hour: minute: second) Va r i e s
Va r i e s
Vehicle Speed km/h / MPH0 km/h / 0 MPH 0 km/h / 0 MPH
Transmission Gear Out of gear/ 1st/ 2nd/ 3rd/ 4th/ 5th Out of gear
Out of gear
Starter Switch On/OffOn On
Ignition Switch On/OffOn On
Ignition Voltage Volts11.0 to 15.0 volts 11.0 to 15.0 volts
Battery Voltage Volts11.0 to 15.0 volts 11.0 to 15.0 volts
Fuel Pump Relay Command On/ Off OnOn
Swirl Control Solenoid Command On/ Off OnOn
Fuel Filter Switch On/ OffOn On
A/C Request Signal On/ OffOff Off
A/C Relay Command On/ OffOff Off
Park/ Neutral Switch Neutral/ In Gear NeutralNeutral
Glow Relay Command On/ OffOff Off
Glow Plug Lamp Command On/ Off OffOff
Brake Switch 1 Applied/ Released Released Released
Brake Switch 2 Applied/ Released Released Released
Clutch Pedal Switch Applied/ Released ReleasedReleased
Cruise Main Lamp Command On/ Off OffOff
Cruise Main Switch On/ OffOff Off
Cruise Cancel Switch On/ OffOn On
Cruise Resume Switch On/ OffOff Off
Cruise Set Switch On/ OffOff Off
MIL Command (Malfunction Indicator Lamp) On/ Off
Off Off
SVS Lamp Command (Service Vehicle Soon) On/ Off
Off Off
Limp Home Mode None/ 1/ 2/ 3/ 4 None None
Distance While MIL is Activated km/ Mile 0 km/ 0 Mile0 km/ 0 Mile
Engine Runtime With MIL Active minutes 00
Total Engine Overspeed Event Counter VariesVaries
Total Engine Coolant
Overtemperature Event Counter
Varies Varies
Total Fuel Temperature
Overtemperatrure Event Counter
Varies Varies
Total Intake Air Temperature Overtemperaure Event Counter
Varies Varies
Immobilizer Function Programmed Ye s / N o
Ye s Ye s
Wrong Immobilizer Signal Yes/ NoNo No
Scan Tool Parameter Units Displayed Typical Data Value at Engine Idle Typical Data Value at 2000RPM

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-53
Cam/ Crank Sensor Signal/ Synchronization Status
This parameter displays the synchronization state of
the crankshaft position (CKP) sensor signal and
camshaft position (CMP) sensor signal. Asynchronous
indicates the CMP sensor signal is not detected or only
CKP sensor signal is detected. No Crank Signal
indicates CMP sensor signal is detected but CKP
sensor signal is not detected. Synchronous indicates
both sensor signals are detected correctly.
Engine Runtime
This parameter displays the time elapsed since the
engine start. The scan tool will display the time in
hours, minutes and seconds. The engine run time will
reset to zero as soon as the ignition switch is OFF.
Vehicle Speed
This parameter indicates the vehicle speed calculated
by the ECM using the signal from the vehicle speed
sensor (VSS). The scan tool will display a low value at
lower vehicle speeds, and a high value at higher
vehicle speeds.
Transmission Gear
This parameter displays the estimated transmission
gear position as calculated by the ECM based on
inputs from the vehicle speed and the engine speed.
Starter Switch
This parameter displays the input status of the starter
switch to the ECM. When the ignition switch is turned at
START position, the scan tool displays On.
Ignition Switch
This parameter displays the input status of the ignition
switch to the ECM. When the ignition switch is turned
ON position, the scan tool displays On.
Ignition Voltage
This parameter displays the ignition voltage measured
at the ignition feed circuit of the ECM. Voltage is
applied to the ECM when the ignition switch is ON
position.
Battery Voltage
This parameter displays the battery voltage measured
at the ECM main relay switched voltage feed circuit of
the ECM. Voltage is applied to the ECM when the ECM
main relay is energized.
Fuel Pump Relay Command
This parameter displays the commanded state of the
fuel pump relay control circuit. On indicates the fuel
pump relay control circuit is being grounded by the
ECM, allowing fuel pumping from the tank.
Swirl Control Solenoid Command
This parameter displays the commanded state of the
swirl control solenoid control circuit. On indicates the
swirl control solenoid control circuit is being grounded
by the ECM, allowing vacuum pressure to the swirl
control
actuator. Fuel Filter Switch
This parameter displays the input state of the fuel
pressure switch to the ECM. When the large vacuum
pressure is generated in the fuel suction line such as
clogged fuel filter, the scan tool displays Off.
A/C Request Signal
This parameter displays the input state of the air
conditioning (A/C) request to the ECM from the
heating, ventilation, and air conditioning (HVAC)
controls. When the HVAC system is requesting to
ground the A/C compressor clutch, the scan tool
displays On.
A/C Relay Command
This parameter displays the commanded state of the A/
C compressor relay control circuit. On indicates the A/C
compressor relay control circuit is being grounded by
the ECM, allowing voltage to the A/C compressor.
Park/ Neutral Switch
This parameter displays the input state of the neutral
switch to the ECM. When the transmission gear is Park
or Neutral, the scan tool displays Neutral.
Glow Relay Command
This parameter displays the commanded state of the
glow relay control circuit. On indicates the glow relay
control circuit is being grounded by the ECM, allowing
voltage to the glow plugs.
Glow Plug Lamp Command
This parameter displays the commanded state of the
glow indicator lamp control circuit. The glow indicator
lamp should be On when the scan tool indicates
command On. The glow indicator lamp should be Off
when the scan tool indicates command Off.
Brake Switch 1
This parameter displays the input state of the brake
pedal switch 1 to the ECM. When the brake pedal is
depressed, scan tool displays Applied.
Brake Switch 2
This parameter displays the input state of the brake
pedal switch 2 to the ECM. When the brake pedal is
depressed, scan tool displays Applied.
Clutch Pedal Switch
This parameter displays the input state of the clutch
pedal switch to the ECM. When the clutch pedal is
depressed, scan tool displays Applied.
Cruise Main Lamp Command
This parameter displays the commanded state of the
cruise main lamp control circuit. The cruise main lamp
should be On when the scan tool indicates command
On. The cruise main lamp should be Off when the scan
tool indicates command Off.
Cruise Main Switch
This parameter displays the input state of the cruise
main switch to the ECM. When the Cruise Main switch
is pushed, the scan tool displays On.

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-75
31. Turn OFF the ignition.
2. Place the transmission in Neutral and set the parking brake.
3. Start the engine.
4. Accelerate the engine between idle and W.O.T. (accelerator pedal full travel) many
times while observing the DTC Information
with a scan tool.
Does the DTC fail this ignition? —
Go to Step 4 Go to Diagnostic
Aids
4 1. Turn OFF the ignition.
2. Wait 1 minute for the fuel pressure to bleed down from the fuel rail.
3. Turn ON the ignition, with the engine OFF. DO NOT start the engine.
4. Observe the Fuel Rail Pressure (FRP) Sensor parameter with the scan tool.
Does the scan tool indicate within the specified
value? 0.9 to 1.0 volt
Go to Step 5 Go to Step 10
5 1. Start the engine.
2. Perform the Cylinder Balance Test with a scan tool.
3. Command each injector OFF and verify an engine speed change for each injector.
Is there an injector that does not change engine
speed when commanded OFF? —
Go to Step 12 Go to Step 6
6 1. Check the fuel system line connections
between the fuel tank and the fuel supply
pump for tightness and all fuel hoses for cuts,
cracks and for the use of proper clamps.
Notice: Air in the fuel system will cause fuel rail
pressure fluctuations especially at high engine
speed and load, which may set this DTC.
2. Start the engine and check for high side fuel system leaks at the fuel supply pump and fuel
rail.
Notice: Fuel may leak under the cylinder head
cover from the inlet high pressure line. In such
case, the engine oil level will rise. Inspect for fuel
leakage into the engine oil.
3. Repair any fuel system leaks as necessary.
Did you find and correct the condition? —
Go to Step 14 Go to Step 7
Step
Action Value(s)Yes No

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6E-80 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
21. Install a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Start the engine.
4. Monitor the DTC Information with a scan tool.
Is DTC P0089, P0091, P0092, P0192, P0193,
P0201 - P0204, P0219, P1064, P1065, P124B or
P2146 - P2151 set? —
Go to Applicable DTC Go to Step 3
3 1. Turn OFF the ignition.
2. Place the transmission in Neutral and set the parking brake.
3. Start the engine.
4. Accelerate the engine between idle and W.O.T. (accelerator pedal full travel) many
times while observing the Fuel Rail Pressure
parameter with a scan tool.
Does the Fuel Rail Pressure parameter ever
exceed the specified value? 190 MPa
(27,600 psi)
Go to Step 4 Go to Step 11
4 1. Turn OFF the ignition.
2. Wait 1 minute for the fuel pressure to bleed down from the fuel rail.
3. Turn ON the ignition, with the engine OFF. DO NOT start the engine.
4. Observe the Fuel Rail Pressure (FRP) Sensor parameter with the scan tool.
Does the scan tool indicate within the specified
value? 0.9 to 1.0 volt
Go to Step 5 Go to Step 10
5 1. Start the engine.
2. Perform the Cylinder Balance Test with a scan tool.
3. Command each injector OFF and verify an engine speed change for each injector.
Is there an injector that does not change engine
speed when commanded OFF? —
Go to Step 13 Go to Step 6
6 1. Check the fuel system line connections
between the fuel tank and the fuel supply
pump for tightness and all fuel hoses for cuts,
cracks and for the use of proper clamps.
Notice: Air in the fuel system will cause fuel rail
pressure fluctuations especially at high engine
speed and load, which may set this DTC.
2. Start the engine and check for high side fuel system leaks at the fuel supply pump and fuel
rail.
Notice: Fuel may leak under the cylinder head
cover from the inlet high pressure line. In such
case, the engine oil level will rise. Inspect for fuel
leakage into the engine oil.
3. Repair any fuel system leaks as necessary.
Did you find and correct the condition? —
Go to Step 15 Go to Step 7
Step
Action Value(s)Yes No

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ISUZU KB P190 2007