
Blower motor specification
Shaft speed
(with fan impeller load)
at 12 v and (25±10)°ë, rpm . . . . . . . . . . . . . . . . . . . . . . . .3000±150
Consumption current
at the load and
rpm as above, ampere, not greater . . . . . . . . . . . . . . . . . . . . . . . .4.5
Fault diagnosis
Cause
Remedy
Motor does not operate
1. Wires damaged or wire con-
nections corroded
2. Blown fuse 1 (in fuse and relay
box unit)
3. Heater switch damaged - no
voltage across switch terminals
4. Motor brushes stuck or worn,
armature winding broken or com-
mutator foul
5. Armature winding shorted to
earth - fuse blows at motor cut-in
Motor is restricted to one speed
1. Wires damaged or wire con-
nections corroded
2. Heater switch damaged
3. Supplemental resistor blown
Slower motor armature rotation
1. Dirty or corroded commutator,
brushes worn
2. Internal earthing in armature
winding
3. Armature shaft seized in bear-
ings
Instruments
General description
All gauges and warning lights are grouped within the instru-
ment cluster. The instrument cluster includes a speedometer with
trip counter, coolant temperature gauge, fuel gauge, tachometer,
voltmeter with LED and 12 warning lights. In 1996 the voltmeter
was replaced with the low battery warning light.
The instrument cluster is held to the dashboard by two nuts.
The connections for instrument cluster are through the printed
circuit board which is fitted to the back of the housing. The wiring
diagram for the instrument cluster is shown in Fig.7-39 (pre-
1996) and Fig.7-40 (1996-on).
The speedometer incorporates two trip recorders: total
mileage odometer and trip counter. The trip counter can be reset
to zero by pushing the reset knob in the instrument cluster. Reset
the trip counter only on a stationary vehicle turning the knob
clockwise.
WARNING. To avoid damage to the instrument cluster
glass, never use solvents for its cleaning.
Fault diagnosis
Cause
Remedy
Temperature gauge or fuel gauge inoperative
1. Gauge faulty
2. Sender unit faulty
3. Wires damaged or wire ends
corroded
Fuel gauge at zero with full tank
Float stop set incorrectly (beyond
resistor winding)
Fuel gauge needle moves erratically and frequently drops to zero
1. Poor contact between sender
resistance and current collector
2. Sender resistor winding broken
Fuel reserve warning lamp stays on
Sender lead earthed
Warning light failure
1. Bulb blown
2. Warning light switch faulty
3. Wires broken, wire ends cor-
roded
4. Poor bulb holder contact with
PCB
Speedometer inoperative
1. Loose speedometer cable ends
retaining nuts
2. Cable broken
3. Speedometer mechanism dam-
aged
Noise from speedometer cable
1. Outer cable broken (dents,
twists, etc.)
2. Cable routed with bending
radius less than 100 mm
163
1. Check and restore connections.
Renew damaged wiring
2. Renew blown fuse
3. Check switch, renew
when applicable
4. Check motor, overhaul or
renew as applicable
5. Renew motor
1. Renew damaged wires, clean
wire ends
2. Renew switch
3. Renew resistor
1. Clean commutator, renew brush-
es
2. Renew motor
3. Dismantle motor, clean shaft
journals
1. Renew gauge or instrument clus-
ter
2. Renew sender unit
3. Check wiring, restore connec-
tions
1. Renew bulb
2. Renew switch
3. Renew damaged wires, clean
wire ends
4. Bend bulb holder contacts or
renew bulb holder
1. Renew cable
2. Route cable correctly
Bend stop 1-2 mm down
Check, eliminate earthing
1. Bend current collector
2. Renew sender
1. Check, tighten nuts
2. Renew cable
3. Renew speedometer
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