2004 ISUZU TF SERIES fuel type

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-77


F0: Diagnostic Trouble Code
F0: Read DTC Infor By Priority
F1: Clear DTC Information
F2: DTC Information
F0: History
F1: MIL SVS or Message Requested
F2: Last Test Failed
F3: Test Failed Since Code Cleared
F4: Not Run Since Code Cleared
F5: Failed This Ignition
F3: Freeze Frame/Failure Record
F1: Data Display
F0: Engine Data
F1: O2 Sensor Data
F2: Snapshot
F3: Miscellaneous Test
F0: Lamps
F0: Malfunction Indicator Lamps
F1: Relays
F0: Fuel Pump Relay
F1: A/C Clutch Relay
F2: EVAP
F0: Purge Solenoid
F3: IAC System
F0: RPM Control
F1: IAC Control
F4: Fuel System
F0: Fuel Trim Reset

F4: System Information
F0: MIL/System Status

F0: Diagnostic Trouble Code
The purpose of the "Diagnostic Trouble Codes" mode is
to display stored trouble code in the
ECM.
When "Clear DTC Information" is selected, a "Clea
r
DTC Information", warning screen appears.
This screen informs you that by cleaning DTC's "all
stored DTC information in the ECM will be erased".
After clearing codes, confirm system operation by test
driving the vehicle.
Use the "DTC Information" mode to search for a
specific type of stored DTC information.
History
This selection will display only DTCs that are stored in
the ECM's history memory. It will not display Type B
DTCs that have not requested the MIL ("Check Engine
Lamp"). It will display all type A and B DTCs tha
t
requested the MIL and have failed within the last 40
warm-up cycles. In addition, it will display all type C and
D DTCs that have failed within the last 40 warm-up
cycles.

MIL SVC or Message Request
This selection will display only DTCs that are requesting
the MIL. Type C and Type D DTCs cannot be displayed
using the MIL. Type C and D DTCs cannot be displayed
using this option.
This selection will report type B DTCs only after the MIL
has been requested.

Last Test Failed
This selection will display only DTCs that have failed the
last time the test run. The last test may have run during
a previous ignition cycle of a type A or type B DTC is
displayed. For type C and type D DTCs, the last failure
must have occurred during the current ignition cycle to
appear as last test fail.

Test Failed Since Code Cleared
The selection will display all active and history DTCs
that have reported a test failure since the last time
DTCs were cleared. DTCs that last failed more that 40
warm-up cycles before this option is selected will not be
displayed.

Not Run Since Code Cleared
This selection will display up to DTCs that have not run
since the DTCs were last cleared. Since any displayed
DTCs have not run, their condition (passing or failing) is
unknown.

Failed This Ignition
This selection will display all DTCs that have failed
during the present ignition cycle.

Freeze Frame/Failure Record
This selection will display stored various vehicle
information at the moment an emission related faul
t
when the MIL ("Check Engine Lamp") is commanded
on.
The Freeze Frame data will not be erased unless the
associated history DTC is cleared.

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-133
Flash
Code Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up) Recovery Condition Related Failure Parts Related
ECM Pin
No. Related
Multiple
DTC
P0131 A O2 Sensor Circuit Low Voltage
(Bank 1 Sensor 1) B21/
B22 P0171/
P1171/
P1172 P0151 A O2 Sensor Circuit Low Voltage
(Bank 2 Sensor 1) 1. No DTC relating to ECT sensor, CMP sensor,
CKP sensor, VSS, injector control circuit,
ignition control circuit and O2 sensor circuit no
activity (bank 1 & 2).
2. Engine speed is between 1000rpm and
4000rpm.
3. Engine coolant temperature is between 70
C
and 110
C.
4. Vehicle speed is between 0km/h and
120km/h.
5. Engine load is between 80% and 160%.
6. Throttle position fluctuation is below 0.28V.
7. O2 sensor bank 1 or bank 2 output voltage is
more than 400mV for 50 seconds. "Open Loop" fuel control. O2 sensor bank 1 or bank 2
output voltage is below 400mV
for 50 seconds. 1. Sensor harness open or short to ground
circuit.
2. O2 sensor malfunction.
3. MAF sensor output is incorrect.
4. Air intake line malfunction.
5. IAC valve malfunction.
6. Low fuel pressure.
7. Injector malfunction.
8. ECM malfunction.
B23/
B24 P0174/
P1171/
P1172 P0132 A O2 Sensor Circuit High Voltage
(Bank 1 Sensor 1) B21/
B22 P0172 P0152 A O2 Sensor Circuit High Voltage
(Bank 2 Sensor 1) 1. No DTC relating to ECT sensor, CMP sensor,
CKP sensor, VSS, injector control circuit,
ignition control circuit and O2 sensor circuit no
activity (bank 1 & 2).
2. Engine speed is between 1000rpm and
4000rpm.
3. Engine coolant temperature is between 70
C
and 110
C.
4. Vehicle speed is between 0km/h and
120km/h.
5. Engine load is between 80% and 160%.
6. Throttle position fluctuation is below 0.28V.
7. O2 sensor bank 1 or bank 2 output voltage is
below 600mV for 50 seconds. "Open Loop" fuel control. O2 sensor bank 1 or bank 2
output voltage is more than
600mV for 50 seconds. 1. Sensor harness open or short to ground
circuit.
2. O2 sensor malfunction.
3. MAF sensor output is incorrect.
4. Air intake line malfunction.
5. AC valve malfunction.
6. Low fuel pressure.
7. Injector malfunction.
8. EVAP purge solenoid valve malfunction.
9. Ignition system malfunction.
10. Spark plug malfunction.
11. ECM malfunction. B23/
B24 P0175 P0134 A O2 Sensor Circuit No Activity
Detected (Bank 1 Sensor 1) B21/
B22 -
15

P0154 A O2 Sensor Circuit No Activity
Detected (Bank 2 Sensor 1) 1.No DTC relating to MAF sensor, ECT sensor,
CMP sensor, CKP sensor, VSS, injector
control circuit and ignition control circuit.
2. Engine coolant temperature is more than
70
C.
3. Vehicle speed is more than 60km/h.
4. O2 sensor bank 1 or bank 2 output voltage is
between 350mV and 600mV. "Open Loop" fuel control. O2 sensor bank 1 or bank 2
output voltage is below 0.35mV
consecutively.
OR
O2 sensor bank 1 or bank 2
output voltage is more than
600mV consecutively. 1. O2 sensor malfunction.
2. ECM malfunction.
B23/
B24 -

6E-134 3.5L ENGINE DRIVEABILITY AND EMISSIONS Flash
Code Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up) Recovery Condition Related Failure Parts Related
ECM Pin
No. Related
Multiple
DTC
P0171 B O2 Sensor System Too Lean
(Bank 1) - -
44
P0174 B O2 Sensor System Too Lean
(Bank 2) 1. No DTC relating to MAF sensor, IAT sensor,
ECT sensor, TPS, CMP sensor, CKP sensor,
VSS, injector control circuit, ignition control
circuit, O2 sensor circuit low voltage & high
voltage (bank 1 & 2) and O2 sensor circuit no
activity (bank 1 & 2).
2. Engine speed is more than 600rpm.
3. Intake air temperature is more than 50
C.
4. Engine coolant temperature is between 35
C
and 120
C.
5. Engine load is more than 20.
6. EVAP purge solenoid valve on-duty is below
100%.
7. Air-fuel ratio correction volume is more than
150% for 20 seconds. No fail-safe function. Air fuel ratio correction volume
is between 50% and 150% for
5 seconds. 1. Sensor harness open or short to ground
circuit.
2. O2 sensor malfunction.
3. MAF sensor output is incorrect.
4. Air intake line malfunction.
5. IAC valve malfunction.
6. Low fuel pressure.
7. Injector malfunction.
8. ECM malfunction.
- -
P0172 B O2 Sensor System Too Rich
(Bank 1) - -
45
P0175 B O2 Sensor System Too Rich
(Bank 2) 1. No DTC relating to MAF sensor, IAT sensor,
ECT sensor, TPS, CMP sensor, CKP sensor,
VSS, injector control circuit, ignition control
circuit, O2 sensor circuit low voltage & high
voltage (bank 1 & 2) and O2 sensor circuit no
activity (bank 1 & 2).
2. Engine speed is more than 600rpm.
3. Intake air temperature is more than 50
C.
4. Engine coolant temperature is between 35
C
and 120
C.
5. Engine load is more than 20.
6. EVAP purge solenoid valve on-duty is below
100%.
7. Air-fuel ratio correction volume is below 50%
for 20 seconds. No fail-safe function. Air fuel ratio correction volume
is between 50% and 150% for
5 seconds. 1. Sensor harness open or short to ground
circuit.
2. O2 sensor malfunction.
3. MAF sensor output is incorrect.
4. Air intake line malfunction.
5. AC valve malfunction.
6. Low fuel pressure.
7. Injector malfunction.
8. EVAP purge solenoid valve malfunction.
9. Ignition system malfunction.
10. Spark plug malfunction.
11. ECM malfunction. - -

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-135
Flash
Code Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up) Recovery Condition Related Failure Parts Related
ECM Pin
No. Related
Multiple
DTC
P1171 D Fuel Supply System Lean
During Power Enrichment
(Bank 1) B21/
B22/
-
44
P1172 D Fuel Supply System Lean
During Power Enrichment
(Bank 2) 1. No DTC relating to MAF sensor, IAT sensor,
ECT sensor, TPS, CMP sensor, CKP sensor,
VSS, injector control circuit, ignition control
circuit, O2 sensor circuit low voltage & high
voltage (bank 1 & 2) and O2 sensor circuit no
activity (bank 1 & 2).
2. Engine speed is between 1000rpm and
6000rpm.
3. Intake air temperature is below 70
C.
4. Engine coolant temperature is between 30
C
and 120
C.
5. Engine load is between 150 and 255.
6. Throttle position output is more than 2.22V
and fluctuation is below 0.28V.
7. Except fuel cut operation.
8. O2 sensor output voltage below 250mV for 10
seconds. No fail-safe function.
O2 sensor output voltage is
more than 520mV for 5
seconds.
1. Sensor harness open or short to ground
circuit.
2. O2 sensor malfunction.
3. MAF sensor output is incorrect. 4. Air intake
line malfunction.
5. IAC valve malfunction.
6. Low fuel pressure.
7. Injector malfunction.
8. ECM malfunction.
B23/
B24 -
P0201 A Injector 1 Control Circuit
A36 - P0202 A Injector 2 Control Circuit
B3 - P0203 A Injector 3 Control Circuit
A35 - P0204 A Injector 4 Control Circuit
B4 - P0205 A Injector 5 Control Circuit
A34 -
31
P0206 A Injector 6 Control Circuit 1. No DTC relating to CMP sensor and CKP
sensor.
2. Under sequential injection.
3. Injection pulse is between 2.5ms and 7.5 ms.
4. Except fuel cut operation.
5. Engine speed is between 600rpm and
2000rpm.
6. 30 injection signals are not detected
consecutively. No fail-safe function. 30 injection signals are
detected consecutively. 1. Injector harness open circuit, short to ground
or short to voltage.
2. Injector malfunction.
3. ECM malfunction.
B5 -

6E-136 3.5L ENGINE DRIVEABILITY AND EMISSIONS Flash
Code Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up) Recovery Condition Related Failure Parts Related
ECM Pin
No. Related
Multiple
DTC
P0336 B Crankshaft Position Sensor
Circuit Range/Performance
(58X) 1. No DTC relating to CMP sensor.
2. Engine speed is below 2000rpm.
3. Extra or missing pulse is detected
consecutively. 1. CKP sensor harness open circuit, short to
ground or short to voltage.
2. Poor connector connection.
3. CKP sensor malfunction.
4. Pulse sensing gap incorrect.
5. Electrical interference.
6. Magnetic interference.
7. ECM malfunction. A23/
A24/
A25 P0122/
P0337
29
P0337 B Crankshaft Position Sensor
Circuit No Signal (58X) 1. No DTC relating to CKP sensor.
2. Engine speed is below 2000rpm.
3. Incorrect pulse is detected consecutively. No fail-safe function.
Correct pulse is detected
consecutively.

1. CKP sensor harness open circuit, short to
ground or short to voltage.
2. CMP sensor signal circuit short to ground
circuit.
3. TPS & CMP sensor power supply circuit short
to ground.
4. Poor connector connection.
5. CKP sensor malfunction.
6. Pulse sensing gap incorrect.
7. Electrical interference.
8. Magnetic interference.
9. ECM malfunction. A23/
A24/
A25 P0112/
P0336
P0341 B Camshaft Position Sensor
Circuit Range/Performance 1. Engine speed below 2000rpm.
2. No crankshaft position sensor DTC P0336 or
P0337.
3. Incorrect pulse is detected consecutively. 1. CMP sensor harness open circuit, short to
ground or short to voltage.
2. Poor connector connection.
3. CMP sensor malfunction.
4. Pulse sensing gap incorrect.
5. Electrical interference.
6. Magnetic interference.
7. ECM malfunction. B27/
B28/
B39 P0103/
P0113/
P0123/
P0342
41
P0342 B Camshaft Position Sensor
Circuit No Signal 1. No DTC relating to CKP sensor.
2. Engine speed is below 2000rpm.
3. No pulse is detected consecutively. Fuel cut is operated at high
engine speed.
Correct pulse is detected
consecutively.

1. CMP sensor harness open circuit, short to
ground or short to voltage.
2. Poor connector connection.
3. CMP sensor malfunction.
4. Pulse sensing gap incorrect.
5. Electrical interference.
6. Magnetic interference.
7. ECM malfunction. B27/
B28/
B39 P0103/
P0113/
P0123/
P0341
or
P0122

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-137
Flash
Code Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up) Recovery Condition Related Failure Parts Related
ECM Pin
No. Related
Multiple
DTC
P0351 A Ignition 1 Control Circuit
A32 - P0352 A Ignition 2 Control Circuit
B7 - P0353 A Ignition 3 Control Circuit
A31 - P0354 A Ignition 4 Control Circuit
B8 - P0355 A Ignition 5 Control Circuit
A30 -
42
P0356 A Ignition 6 Control Circuit 1. No DTC relating to CMP sensor and CKP
sensor.
2. Engine speed is between 250rpm and 850
rpm.
3. 10 ignition signals are not detected
consecutively. Fuel cut is operated more than
2000rpm. 10 ignition signals are detected
consecutively. 1. Ignition coil harness open circuit, short to
ground or short to voltage.
2. Ignition coil malfunction.
3. ECM malfunction.
B9 -

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-139
Flash
Code Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up) Recovery Condition Related Failure Parts Related
ECM Pin
No. Related
Multiple
DTC 24 P0500 B Vehicle Speed Sensor Circuit
Range/Performance 1. Engine speed is below 5000rpm.
2. Under fuel cut operation.
3. Vehicle speed sensor output is below 1km/h.
Above conditions are met for 4 seconds. The ECM use 10km/h
condition as substitute. Vehicle speed sensor output is
more than 2km/h. 1. Sensor harness open circuit, short to ground
circuit or short to voltage circuit.
2. Poor connector connection.
3. Electrical interference.
4. Magnetic interference.
5. VSS malfunction.
6. ECM malfunction. B32 -
P0562 D System Voltage Low Battery voltage is below 6V for more than 20
seconds. 1. Battery power feed harness open circuit or
short to ground circuit.
2. ECM ground harness open or poor
connection.
3. Poor connector connection.
4. Battery malfunction.
5. Charge system malfunction.
6. ECM malfunction. - -
66
P0563 A System Voltage High Battery voltage is above 16V for more than 20
seconds. No fail-safe function. Battery voltage is between 6V
and 16V.
1. Charge system malfunction.
2. Battery jump start cable misconnect.
3. ECM malfunction. - - 51 P0601 A Control Module Memory
Checksum ECM memory area error. Engine control disabled. Memory are is OK.
1. ECM malfunction. - -
P0602 - ECU Programming Error ECM memory area error. Engine control disabled. Memory are is OK.
1. ECM is not programmed. - -

6E-140 3.5L ENGINE DRIVEABILITY AND EMISSIONS Flash
Code Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up) Recovery Condition Related Failure Parts Related
ECM Pin
No. Related
Multiple
DTC
P1508 B Idle Air Control System
Low/Closed 1. No DTC relating to MAF sensor, IAT sensor,
ECT sensor, TPS, CMP sensor, CKP sensor,
VSS and system voltage.
2. Engine speed is between 675rpm and
6000rpm.
3. Engine coolant temperature is more than
75
C.
4. Intake air temperature is between -10
C and
80
C.
5. Vehicle is stopping.
6. Small amount of intake air through the idle air
control valve. (Idle air control valve is sticking
at close position.) Above conditions are met
for 2 seconds. 1. IAC valve harness open circuit, short to
ground circuit or short to voltage circuit.
2. Poor connector connection.
3. IAC valve malfunction.
4. IAC valve is sticking at close position.
5. ECM malfunction. B13/
B14/
B16/
B17 -
22
P1509 B Idle Air Control System
High/Open 1. No DTC relating to MAF sensor, IAT sensor,
ECT sensor, TPS, CMP sensor, CKP sensor,
VSS and system voltage.
2. Engine speed is between 675rpm and
6000rpm.
3. Engine coolant temperature more than 75
C.
4. Intake air temperature is between -10
C and
80
C.
5. Vehicle is stopping.
6. Large amount of intake air through the idle air
control valve. (Idle air control valve is sticking
at open position.) Above conditions are met
for 2 seconds. Fuel cut is operated at high idle
speed.
Correct amount of air intake
through the idle air control
valve. (Correct movement of
the idle air control valve.)

1. IAC valve harness open circuit, short to
ground circuit or short to voltage circuit.
2. Poor connector connection.
3. IAC valve malfunction.
4. IAC valve is sticking at open position.
5. ECM malfunction. B13/
B14/
B16/
B17 - 65 P1601 D CAN BUS Off CAN BUS off condition is detected consecutively.
CAN BUS on condition is
detected consecutively for 2
seconds. 1. ECM and TCM communication circuit open,
short to ground or short to voltage.
2. Electrical interference.
3. ECM malfunction.
4. TCM malfunction. A10/
A11 - 67 U2104 D CAN BUS Reset Counter
Overrun 1. No DTC CAN BUS Off.
2. CAN valid counter does not change for 2
seconds. Torque reduction control is
disable.
CAN valid counter changes
consecutively for 2 seconds. 1. ECM and TCM communication circuit open,
short to ground or short to voltage.
2. Electrical interference.
3. ECM malfunction.
4. TCM malfunction. A10/
A11 P1767/
U2104 (AT)