odometer ISUZU TF SERIES 2004 Workshop Manual

ELECTRICAL-BODY AND CHASSIS 8A-255
TROUBLESHOOTING
SPEEDOMETER
1. Speedometer and odometer do not function

Checkpoint Trouble Cause Countermeasure


Replace the vehicle speed
sensor

Vehicle speed sensor
malfunction
NG
Repair an open circuit in the
circuit or a poor connection at
the connectors
Continuity between the vehicle
speed sensor and the meter,
or the fuse RHD: C-5 (15A)
and the ground

Open circuit or poor connector
contact


Replace the case baseboard
assy

Use a meter tester to check
the speedometer function

Speedometer malfunction
NG NG OK
OK
Check the vehicle speed
sensor output
(4 pulses/1 rotation)




2. Speedometer pointer fluctuates
(May be wide fluctuation)

Replace the vehicle speed
sensor, or repair an open
circuit in the circuit or a
connectors Vehicle speed sensor
malfunction, or open circuit or
poor connector contact
NG

Replace the case baseboard
assy

Use a meter tester to check
the speedometer function

Speedometer malfunction
NG OK
Check the speed sensor
output by using the
oscilloscope

8A-256 ELECTRICAL-BODY AND CHASSIS
3. Speedometer pointer jumps erratically

Checkpoint Trouble Cause Countermeasure

Replace the vehicle speed
sensor, or repair an open
circuit in the circuit or a poor
connection at the connectors Vehicle speed sensor
malfunction, or open circuit or
poor connector contact
NG

Replace the case baseboard
assy

Use meter tester to check the
speedometer function

Speedometer malfunction
NG OK
Check the vehicle speed
sensor output by using the
oscilloscope





Inspection of a waveform by oscilloscope
1. Connect a resistance of 1.3 to 5k ohm (1.4W or more) between the harness side connectors 30 B-24 and 9

B-24 of the meter.


2. Install a speedometer tester.
2. Turn on the starter SW.
3. Check the waveform at the time when the vehicle speed is at 60km/h.





4. Trip odometer does not reset


Replace the case baseboard
assy

Faulty reset mechanism
NG Check at other kilometer
figures given by meter tester
(Reset should be made to
zero kilometer)

ELECTRICAL-BODY AND CHASSIS 8A-271
Tachometer Off-Vehicle Inspection
Remove the tachometer from the meter assembly and
measure the resistance value and the current consumption
between each terminal.


SELF DIAGNOSTIC FUNCTION
Check that the speedometer, tachometer, fuel gauge, and
temperature gauge operate properly.

821R300033

Entering the self-diagnostic mode
1. Push in and hold the “Change Indicator and Reset” knob.
2. Turn the ignition ON.
3. When the LCD odometer turns ON, release the “Change
Indicator and Reset” knob.
4. Push in and release the “Change Indicator and Reset”knob
three times in quick succession.
The meter cluster is now in “Self-diagnostic” mode.
NOTE: Steps 2-4 must be performed within 7 seconds.
The meter cluster will not enter “Self-diagnostic”mode if any of
the following conditions occur:
1. The “Change Indicator and Reset” knob is not depressed
when the ignition is turned ON.
2. The “Change Indicator and Reset” knob is released within
600ms of turning the ignition ON.
3. The “Change Indicator and Reset” knob is not depressed
and released three times within 7 seconds.

8A-272 ELECTRICAL-BODY AND CHASSIS

Self –diagnostic mode
LCD condition

All LCDs are lit during he transition from self-diagnostic
decision mode to self-diagnostic mode

The odometer/trip indicator scrolls throng its entire range
approximately once every 600 ms. All digits are lit (segmen
t
check indication). This continues until the self-diagnostic
mode is terminated.

Meter and gauge indications
Meter and gauge indications with the change indicator and
reset knob on (self-diagnostic mode) are as shown in the
following table.

RTW38DSF000101


Speedometer 100 kilometers per hour
Tachometer 3,000 rpm
Fuel gauge
Temperature gauge Mid-point on the dial

All indications return to zero when the change indicator and
reset knob is turned off.
The self-diagnostic mode and the self-diagnostic decision
mode are cancelled when the ignition switch is turned to the
OFF position. They also cancel when a speed pulse is sensed.
If either of the self-diagnostic modes are cancelled by turning
the ignition switch to the OFF position, the diagnostic unit
remains in the stand-by condition.
If cancellation occurs when a speed pulse is sensed, the unit
remains in the ordinary operating condition.

6E–402 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
POOR FUEL ECONOMY SYMPTOM
DEFINITIONS: Fuel economy, as measured by an actual road test, is noticeably lower than expected. Also, economy
is noticeably lower than it was on this vehicle at one time, as previously shown by an actual road test. (Larger than
standard tires will cause odometer readings to be incorrect, and that may cause fuel economy to appear poor when it
is actually normal.)
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. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found,
correct the condition as instructed in the bulletin.
Was a bulletin found that addresses the symptom?—Verify repair Go to Step 3
3 Was a visually/physical check performed?
—Go to Step 4Go to Visual /
physical Check
4 Check owner's driving habits.
Is the A/C “On” full time?
Are tires at the correct pressure?
Are ex cessively heavy loads being carried?
Is acceleration too much, too often?—Go to Step 5Go to Step 6
5 Review the items in Step 4 with the customer and
advise as necessary.
Is the action complete?—System OK—
6 Check for low engine coolant level.
Was a problem found? —Verify repair Go to Step 7
7 Check for incorrect or faulty engine thermostat. Refer
to Engine Cooling.
Was a problem found?—Verify repair Go to Step 8
8 Check for proper calibration of the speedometer.
Does the speed indicated on the speed meter closely
match the vehicle speed displayed on the Tech 2?—Go to Step 10Go to Step 9
9 Diagnose and repair the inaccurate speedometer
condition as necessary. Refer to Vehicle Speed
Sensor in Electrical Diagnosis.—Veri fy repai r—
10 Check for proper calibration of the fuel gauge.
Was a problem found? —Verify repair Go to Step 11
11 Check the torque converter clutch (TCC) for proper
operation (if A/T model). If a problem is found, repair
as necessary.
Was a problem found?—Verify repair Go to Step 12
12 1. Using the Tech 2, ignition “On” and engine “Off”.
2. Monitor the “Neutral Switch” in the data display.
Does the Tech 2 indicate correct “Neutral Switch”
status depending on any shift positions?
If a problem is found, repair as necessary.
Was the problem found?—Verify repair Go to Step 13

0B-2 MAINTENANCE AND LUBRICATION
MAINTENANCE SCHEDULE (For GENERAL EXPORT)
Items followed by an asterisk (*) require more frequent maintenance if the vehicle is driven under severe conditions.
Refer to "SEVERE CONDITIONS MAINTENANCE SCHEDULE."

I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate


SERVICE INTERVAL:

1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100(Use odometer reading
1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60or months whichever
comes fi rst)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
ENGINE Idling speed and acceleration
(GASOLINE) I I - I - I - I - I - I - I - I - I - I
(DIESEL) I I I I I I I I I I I I I I I I I I I I * Air cleaner element
(GASOLINE) - I - I - I - R - I - I - I - R - I - I
(DIESEL) I I I I I I I R I I I I I I I R I I I I * P Engine oil (6VE1) - R - R - R - R - R - R - R - R - R - R * P Engine oil (C24SE) Replace every 12,000km * D Engine oil (4JH1-TC) - R - R - R - R - R - R - R - R - R - R * D Engine oil (4JA1-TC) - - R - - R - - R - - R - - R - - R - - * D Engine oil (4JA1-T) RR R R RR RRRRRRRR R R R RRR * P Engine oil filter (6VE1) - R - R - R - R - R - R - R - R - R - R * P Engine oil filter (C24SE) Replace every 12,000km * D Engine oil filter (4JH1-TC, 4JA1-T) - R - R - R - R - R - R - R - R - R - R * D Engine oil filter (4JA1-TC) - - R - - R - - R - - R - - R - - R - - Oil leakage and contamination
(GASOLINE) - I - I - I - I - I - I - I - I - I - I
(DIESEL) I I I I I I I I I I I I I I I I I I I I Fuel leakage I I - I - I - I - I - I - I - I - I - I Fuel tank - - - | - - - | - - - | - - - | - - - | P O2 Sensor Replace every 160,000km P Valve clearances (6VE1) Check and adjust if noisy D Valve clearances A - - A - - - A - - - A - - - A - - - A P Spark plugs (C24SE) (for leaded
fuel use) - R - R - R - R - R - R - R - R - R - R
P Spark plugs (C24SE) (for unleaded
fuel use) - - - - - R - - - - - R - - - - - R - -
P Spark plugs (6VE1) Replace every 160,000km Spark plug wire | | - | - | - | - | - | - | - | - | - | Fuel filter (GASOLINE) - - - R - - - R - - - R - - - R - - - R Fuel filter (DIESEL) - - R - - R - - R - - R - - R - - R - - Engi ne / Accessory dri ve belt
(GASOLINE) - - - - - - - - - R - - - - - - - - - R
Fan belt tension and damage
(DIESEL) I I I I I I I I I I I I I I I I I I I I
* Exhaust system I I - I - I - I - I - I - I - I - I - I Engine coolant concentration (6VE1) - - - - - - - - - R - - - - - - - - - R (C24SE) - | - | - | - | - R - | - | - | - | - R Engine coolant level concentration
(DESEL) I I I I I I I I I R I I I I I I I I I R
Cooli ng sy stem for water l eakage - I - I - I - I - I - I - I - I - I - I All hoses and pipes in engine
compartment for clogs or damage - I - I - I - I - I - I - I - I - I - I
P Timing belt (C24SE) - - - - - - - - - - - - - - - I - - - - (Replace every 120,000km) P Timing belt (6VE1) Replace every 160,000km CLUTCH Cl utch fl ui d I I - I - I - I - I - I - I - I - I - I Clutch pedal travel and free play I I - I - I - I - I - I - I - I - I - I

MAINTENANCE AND LUBRICATION 0B-3
SERVICE INTERVAL:
1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100(Use odometer reading

1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60or months whichever
comes fi rst)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
TRANSMISSION OR TRANSMISSION
WITH TRANSFER CASE


* AT Automatic transmission fluid - - - I - - - I - - - I - - - I - - - I * AT Transfer case oil - R - I - - - R - - - I - - - R - - - I * Manual transmission fluid - R - I - - - R - - - I - - - R - - - I * Transfer case oil - - - I - - - | - - - I - - - | - - - I Oil leakage I I I I I I I I I I I I I I I I I I I I Gear control mechani sm for
looseness - - - I - - - I - - - I - - - I - - - I
PROPELLER SHAFT Loose connections - I - I - I - I - I - I - I - I - I - I * Universal joints and splines for wear
- I - I - I - I - I - I - I - I - I - I
4WD Universal joints and splines - L - L - L - L - L - L - L - L - L - L FRONT AND REAR AXLE * Differential gear oil (Front and rear) - R - I - - - R - - - I - - - R - - - I Oi l l eakage I I I I I I I I I I I I I I I I I I I I Shift on the fly system gear oil I - - I - - - I - - - I - - - I - - - I Front axle shaft rubber boot for
damage - - - I - - - I - - - I - - - I - - - I
Axle shafts for distortion or damage - - - I - - - I - - - I - - - I - - - I Axle case for distortion or damage - - - I - - - I - - - I - - - I - - - I STEERING Power steering fl ui d I I I I I I R I I I I I I R I I I I I I Oil leakage I I I I I I I I I I I I I I I I I I I I * Steering system for looseness or
damage - I - I - I - I - I - I - I - I - I - I
Power steering hose - I - I - I - I - I - I - R - I - I - I Steering wheel play I I I I I I I I I I I I I I I I I I I I Steeri ng function I I I I I I I I I I I I I I I I I I I I Right and left turning radius - - - I - - - I - - - I - - - I - - - I Wheel alignment - - - I - - - I - - - I - - - I - - - I Joint ball for oil leakage or damage - I - I - I - I - I - I - I - I - I - I Joint ball rubber boot for damage - I - I - I - I - I - I - I - I - I - I

0B-4 MAINTENANCE AND LUBRICATION




I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate
SERVICE INTERVAL:
1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100(Use odometer reading
1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60or months whichever
comes fi rst)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
SERVICE BRAKES Brake fluid I - - I - - - I - - - I - - - I - - - I Brake sy stem for fluid l eakage I I I I I I I I I I I I I I I I I I I I Brake functi on I I I I I I I I I I I I I I I I I I I I * Rear brake lining and drum wear - I - I - I - I - I - I - I - I - I - I * Front disc brake pads and discs - I - I - I - I - I - I - I - I - I - I Brake pedal travel and free play I I I I I I I I I I I I I I I I I I I I Pipes and hoses loose connections
or damage I I - I - I - I - I - I - I - I - I - I
PARKING BRAKE Parki ng brake functi on I I I I I I I I I I I I I I I I I I I I Parki ng brake l ever travel I I I I I I I I I I I I I I I I I I I I Cables for looseness or damage
and guide for damage I I I I I I I I I I I I I I I I I I I I
Ratchet for wear or damage - I - I - I - I - I - I - I - I - I - I SUSPENSION Leaf / Coil / Torsion bar springs for
damage I I - I - I - I - I - I - I - I - I - I
Mount for l ooseness or damage I I - I - I - I - I - I - I - I - I - I Shock absorbers for oil leakage - I - I - I - I - I - I - I - I - I - I Shock absorbers mount for
looseness - I - I - I - I - I - I - I - I - I - I
Rubber bushes of suspension wear
or damage - I - I - I - I - I - I - I - I - I - I
Spring action for loss of balance
due to weakening - - - I - - - I - - - I - - - I - - - I
Joint ball rubber boot for damage - I - I - I - I - I - I - I - I - I - I WHEELS Wheel nuts T T - T - T - T - T - T - T - T - T - T Wheel disc for damage I I - I - I - I - I - I - I - I - I - I Hub bearing grease - - - - - R - - - - - R - - - - - R - - Front and rear hub bearing for
looseness - I - I - I - I - I - I - I - I - I - I
Tire pressure and damage I I - I - I - I - I - I - I - I - I - I Tire rotation (Rotate as required) OTHERS Bolts and nuts on chassis and body I I - I - I - I - I - I - I - I - I - I Lube front free – wheding hubs - - - - - L - - - - - L - - - - - L - -

MAINTENANCE AND LUBRICATION 0B-5
MAINTENANCE SCHEDULE (For EUROPE)
Items followed by an asterisk (*) require more frequent maintenance if the vehicle is driven under severe conditions.
Refer to "SEVERE CONDITIONS MAINTENANCE SCHEDULE."
Diesel Engine model (ACEA B2 specification engine oil)

I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate


SERVICE INTERVAL:
1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100(Use odometer reading or
1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60months whichever comes
fi rst)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
DIESEL ENGINE * Engine oil (4JH1-TC) - R - R - R- R- R- R- R - R - R- R* Engine oil (4JA1-TC) - - R - - R - - R - - R - - R - - R - - * Engine oil filter(4JH1-TC) - R - R - R- R- R- R- R - R - R- R* Engine oil filter (4JA1-TC) - - R - - R - - R - - R - - R - - R - - Oil leakage and contamination I I I I I I I I I I I I I I I I I I I I Idling speed and acceleration I I I I I I I I I I I I I I I I I I I I Fan belt tension and damage I I I I I I I I I I I I I I I I I I I I Exhaust system I I - I - I - I - I - I - I - I - I - I All hoses and pipes in engine
compartment for clog of damage - I I I I I I I I I I I I I I I I I I I
Valve clearance (4JH1-TC) - - - A - - - A - - - A - - - A - - - A Valve clearance (4JA1-TC) - - A - - A - - A - - A - - A - - A - - * Air cleaner element (4JH1-TC) I I I I I I I R I I I I I I I R I I I I * Air clearance element (4JA1-TC) - - I I I I I I R I I I I I I I I R I I Fuel filter (4JH1-TC) - - R - - R - - R - - R - - R - - R - - Fuel filter (4JA1-TC) - - - - - - - - R - - - - - - - - R - - Engine coolant concentration (4JH1-TC) - I - I - I - I - I - I - I - I - I - I Engine coolant concentration
(4JA1-TC) - - I - - I - - I - - I - - I - - I - - Cooling system for water leakage
(4JH1-TC) - I - I - I - I - I - I - I - I - I - I Cooing system for water leakage (4JA1-TC) - - I - - I - - I - - I - - I - - I - - CLUTCH Clutch fluid (4JH1-TC) I I - I - I - I - I - I - I - I - I - I Clutch fluid (4JA1-TC) - - I - - I - - I - - I - - I - - I - - Clutch pedal travel and play (4JH1-TC) I I - I - I - I - I - I - I - I - I - I Clutch pedal travel and play (4JA1-TC) - - I - - I - - I - - I - - I - - I - - TRANSMISSION OR TRANSMISSION
WITH TRANSFER CASE
* Manual transmission with fluid (4JH1-TC) - R - I - - - R - - - I - - - R - - - I * Manual transmission with fluid
(4JA1-TC) - - R - - I - - R - - I - - R - - I - - * Transfer case oil (4JH1-TC) - - - I - - - I - - - I - - - I - - - I * Transfer case oil (4JA1-TC) - - R - - I - - R - - I - - R - - I - - Oil leakage (4JH1-TC) I I I I I I I I I I I I I I I I I I I I Oil leakage (4JA1-TC) - - I - - I - - I - - I - - I - - I - - Gear control mechanism for
looseness (4JH1-TC) - - - I - - - I - - - I - - - I - - - I Gear control mechanism for
looseness (4JA1-TC) - - - - - - - - I - - - - - - - - I - I * AT Automatic transmission fluid
(4JH1-TC) - - - I - - - I - - - I - - - I - - - I * AT Automatic transmission fluid (4JA1-TC) - - - - - - - - I - - - - - - - - I - I * AT Transfer case oil (4JH1-TC) - R - I - - - R - - - I - - - R - - - I * AT Transfer case oil (4JA1-TC) - - R - - I - - R - - I - - R - - I - -

0B-6 MAINTENANCE AND LUBRICATION




I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate
SERVICE INTERVAL:
1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100(Use odometer reading or
1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60months whichever comes
fi rst)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
PROPELLER SHAFT Loose connections (4JH1-TC) - I - I - I - I - I - I - I - I - I - I Loose connections (4JA1-TC) - - I - - I - - I - - I - - I - - I - - * Universal joints and splines for wear (4JH1-TC) - I - I - I - I - I - I - I - I - I - I * Universal joints and splines for wear (4JA1-TC) - - I - - I - - I - - I - - I - - I - - 4WD Universal joints and sliding
sleeve (4JH1-TC) - L - L - L - L - L - L - L - L - L - L FRONT AND REAR AXLE * Differential gear oil (Front and rear) (4JH1-TC) - R - I - - - R - - - I - - - R - - - I * Differential gear oil (Front and rear) (4JA1-TC) - - R - - I - - R - - I - - R - - I - - Oil leakage (4JH1-TC) I I I I I I I I I I I I I I I I I I I I Oil leakage (4JA1-TC) - - I - - I - - I - - I - - I - - I - - Shift on the fly system Gear oil (4JH1-TC) I - - I - - - I - - - I - - - I - - - I Gear oil (4JA1-TC) - - - - - - - - I - - - - - - - - I - - Front axle shaft rubber boot for
damage (4JH1-TC) - - - I - - - I - - - I - - - I - - - I Front axle shaft rubber boot for
damage (4JA1-TC) - - - - - - - - I - - - - - - - - I - - Axle case for distortion or damage (4JH1-TC) - - - I - - - I - - - I - - - I - - - I Axle case for distortion or damage (4JA1-TC) - - - - - - - - I - - - - - - - - I - - Axle shafts for distortion or damage (4JH1-TC) - - - I - - - I - - - I - - - I - - - I Axle shafts for distortion or damage (4JA1-TC) - - - - - - - - I - - - - - - - - I - - STEERING Power steering fluid (4JH1-TC) I I I I I I R I I I I I I R I I I I I I Power steering fluid (4JA1-TC) - - - - - - - - - - - I - - - - - - - - Oil leakage (4JH1-TC) I I I I I I I I I I I I I I I I I I I I Oil leakage (4JA1-TC) - - I - - R - - I - - R - - I - - R - - * Steering system for looseness or
damage (4JH1-TC) - I - I - I - I - I - I - I - I - I - I * Steering system for looseness or
damage (4JA1-TC) - - I - - I - - I - - I - - I - - I - - Power steering hose (4JH1-TC) - I - I - I - I - I - I - R - I - I - I Power steering hose (4JA1-TC) - - I - - I - - I - - I - - I - - I - - Steering wheel play (4JH1-TC) I I I I I I I I I I I I I I I I I I I I Steering wheel play (4JA1-TC) - - I - - I - - I - - R - - I - - I - - Steering function (4JH1-TC) I I I I I I I I I I I I I I I I I I I I Steering function (4JA1-TC) - - I - - I - - I - - I - - I - - I - - Right and left turning radius (4JH1-TC) - - - I - - - I - - - I - - - I - - - I Right and left turning radius (4JA1-TC) - - - - - - - - I - - - - - - - - I - - Wheel alignment (4JH1-TC) - - - I - - - I - - - I - - - I - - - I Wheel alignment (4JA1-TC) - - - - - - - - I - - - - - - - - I - - Joint ball for oil leakage or damage (4JH1-TC) - I - I - I - I - I - I - I - I - I - I Joint ball for oil leakage or damage (4JA1-TC) - - I - - I - - I - - I - - I - - I - - Joint ball rubber boot for damage (4JH1-TC) - I - I - I - I - I - I - I - I - I - I Joint ball rubber boot for damage (4JA1-TC) - - I - - I - - I - - I - - I - - I - -