Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1397
ELECTRICAL-BODY AND CHASSIS 8-153
Meter connector pin arrangement
W/ Tachometer
Connector
Ter-
No.
minal No.
B-24
1
Ground
2
Ignition
3
Tachometer
4
-
5
-
6
Engine coolant temperature gauge
7
-
8
-
9
Check engine warning light
10
Diff. lock indicator light (South Africa only)
11
-
12
-
13
Illumination light (+)
14
Illumination light (-)
15
4WD indicator light
16
Turn signal indicator light (left)
Connector
Ter-
No.
minal No.
B-23
1
Turn signal indicator light (right)
2
-
3
High-beam indicator light (+)
4
High-beam indicator light (-)
5
Ground
6
-
7
-
8
Speedometer
9
Speedometer
10
Oil pressure warning light
11
Fuel gauge
12
Brake warning light
13
Charge warning light
14
Illumination light (+)
15
Illumination light (-)
16
Fuel warning light (Except Chile)
8-154 ELECTRICAL-BODY AND CHASSIS
SPEEDOMETER AND TACHOMETER
Speedometer On-Vehicle Inspection
Check the speedometer accuracy with a speedometer tester.
Carefully follow the tester manufacturer’s instructions.
km/h meter (Except Gulf, South Arfrica)
km/h
Indication
Permissible Range
20
17.2-22.8
40
37.2-42.8
60
57.2-62.8
80
77.2-82.8
100
97.3-103.7
120
117.3-123.7
140
137.3-143.7
160
156.9-164.1
km/h meter (For Gulf, South Arfrica)
km/h
Indication
Permissible Range
20
20-25.6
40
40-45.6
60
60-65.6
80
80-85.6
100
99.5-105.9
120
119.5-125.9
140
139.5-145.9
160
159.1-166.3
km/h meter
km/h
Indication
Permissible Range
20
17.5-22.5
40
37.5-42.5
60
57.5-62.5
80
77.5-82.5
100
97.6-103.4
120
117.6-123.4
140
137.6-143.4
160
157.2-163.8
km/h meter (Except Gulf, South Arfrica)
km/h
Indication
Permissible Range
20
20-25
40
40-45
60
60-65
80
80-85
100
99.8-105.6
120
119.8-125.6
140
139.8-145.6
160
159.4-166
ELECTRICAL-BODY AND CHASSIS 8-155
Speedometer Off-Vehicle Inspection
Remove the speedometer from the meter assembly and
measure the resistance and the current consumption between
each terminal.
Speedometer Resistance
Tester
Terminal
terminal
symbol
Red (+)
Black (-) Black (-)
Red (+)
IGN
GND
IGN
GND
∞
30.6 - 37.4k
SEN
GND
SEN
GND
28.8 - 35.2k
∞
4P
GND
4P
GND
13.5 - 16.5k
∞
4P - GND
SEN - GND
IGN - GND
Note: Use the analog type circuit tester (range:
× 1k).
Speedometer Current Consumption
Terminal
symbol
Current
consumption
Remarks
IGN - GND
+
-
85
± 15mA
(when 12
± 1V
applied)
No signal input
Note: 1. Use the analog type circuit tester.
2. Since the current consumption fluctuates when the
source voltage varies, check to be sure that the
voltage applied is 12V
± 1V.
Tachometer On-Vehicle Inspection
1. Attach a tune-up tester to the engine.
2. Start the engine.
3. Compare the tachometer reading and the tester reading.
If the tachometer indication is outside the permissible
range, the tachometer must be replaced.
4. Gradually increase and decrease the engine speed.
Note the movement of the tachometer needle.
If the needle movement is sluggish, the tachometer must be
replaced.
rpm
Indication
Permissible Range
1,000
940-1060
2,000
1875-2125
3,000
2850-3150
4,000
3820-4180
5,000
4820-5180
6,000
5820-6180
8-156 ELECTRICAL-BODY AND CHASSIS
Tachometer Off-Vehicle Inspection
Remove the tachometer from the meter assembly and
measure the resistance value and the current consumption
between each terminal.
Tachometer Resistance
Tester
Terminal
terminal
symbol
Red (+)
Black (-) Black (-)
Red (+)
IGN
GND
IGN
GND
∞
23 - 31k
P
GND
P
GND
28.8 - 35.2k
∞
P - GND
IGN - GND
Note: Use the analog type circuit tester (range:
× 1k).
Tachometer Current Consumption
Terminal
symbol
Current
consumption
Remarks
IGN - GND
+
-
90
± 15mA
(12
± 1V when
voltage applied)
No signal input
Note: 1. Use the analog type circuit tester.
2.
Since the current consumption fluctuates as the
source voltage varies, check to be sure that the
voltage applied is 12V
± 1V.
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