Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1868

7A2-88 DIAGNOSIS

DIAGNOSIS 7A2-89

SYMPTOM DIAGNOSIS

Symptom

Condition

Description

Faulty shift point

Faulty gear shifting (different from shift
pattern)

Gear is shifted, different from the specified
shift pattern.

D1

Gear is shifted frequently

Gear is shifted down immediately though the
accelerator pedal is stepped on a little in D,
3, 2, or L range.

D2

Gear shift point is low or high at all point

Gear shift point is deviated from the shift
diagram.

D3

Gear is not shifted up properly though the
vehicle is accelerated.

Gear is not shifted immediately and enough
acceleration cannot be obtained though the
accelerator pedal is stepped on.

Gear shift point is low or high at limited area

Gear shift point is deviated from the shift
diagram.

D4

Gear is not shifted up properly though the
vehicle is accelerated.

Gear is not shifted immediately and enough
acceleration cannot be obtained though the
accelerator pedal is stepped on.

No kick-down

Kick-down (shift down) is not performed
though the accelerator pedal is fully stepped
on in the kick-down speed range.

D5

No gear shift

No gear shift

Range is fixed without shifting the gear of
1st to 2nd, 2nd to 3rd, and 3rd to 4th.

E1

Gear may be shifted or may not be shifted.

Only 4th gear is not selectable

Gear is not shifted up from 3rd to 4th though
the vehicle is accelerated.

E2

Gear is shifted 2nd to 3rd in 2 range

Gear is shifted 2nd to 3rd in 2 range.

E3

Gear is shifted 1st to 2nd in L range

Gear is shifted 1st to 2nd in L range.

E4

Gear is shifted 3rd to 4th in 3 range

Gear is shifted 3rd to 4th in 3 range.

E5

7A2-90 DIAGNOSIS

Symptom

Condition

Description

Faulty during the

running

Low maximum speed or poor acceleration

Starting acceleration is poor.

F1

Acceleration is slow though the accelerator
pedal is stepped on during the running.

Engine races up during acceleration (slip)

The engine speeds up but vehicle speed
does not increase when the accelerator
pedal is stepped on at the starting.

F2

Only the engine speeds up but vehicle
speed does not increase when the
accelerator pedal is stepped on for
acceleration during the running.

Noise or vibration during the running in R, D,
3, 2, or L range

Noise or vibration is generated in the vicinity
of AT during the running.

F3

Engine brake does not in apply L range

The engine brake does not apply, allowing
the vehicle to run freely when the
accelerator pedal is released at low speed in
L range.

F4

Engine stalls before vehicle stops from
running

The engine stalls simultaneously with the
vehicle stop when the brake pedal is
stepped on to stop the vehicle during the
running.

F5

Faulty in the

stopping

Vehicle moves in P range, or parking gear is
not disengaged other than P range

Vehicle moves though it stops at a slope
and P range is selected.

G1

The engine stalls and vehicle does not move
though other than P range is selected and
the accelerator pedal is stepped on.

Creep force is large

Vehicle accelerates in D, 3, 2, L, and R
ranges though the accelerator pedal is not
stepped on.

G2

Creep force is small

Vehicle does not move though a run range
is selected on a flat road during the idling.

G3

Large noise during idling with the vehicle in
stop state

The transmission is noisy during the idling
speed in all ranges.

G4

Faulty lock-up Judder occurs at the lock-up

The vehicle body judders at lock-up.

H1

Large lock-up shock

Large shock is felt at lock-up.

H2

Lock-up point is high or low

Lock-up point is excessive high or low.

H3

No lock-up

No lock-up

Lockup is not performed in spite of the lock-
up area.

I1

DIAGNOSIS 7A2-91