FUEL INJECTION PUMP INSPECTION [WL-3]

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Caution
•  Fuel injection pump is sealed to maintain proper function. Special tools and testers are required when disassembling the FID. Disassembling the FID without special tools and testers will cause a malfunction.
•  Consult your distributor for disassembly if any fuel injection pump internal parts are possibly malfunctioning.

Injection pump inner parts inspection

Caution
•  Injection pump is sealed to maintain proper function. Special tools and testers are required when disassembling the injection pump. Disassembling the injection pump without special tools and testers will cause a malfunctioning.
•  Consult authorized BOSCH parts distributor for repair if any of the injection pump inner parts are possibly malfunctioning.

Injection pump auxiliary parts inspection

Caution
•  Consult authorized BOSCH parts distributor for repair if any of the following injection pump auxiliary parts are possibly malfunctioning.

1.  Electronic governor

2.  Timer position sensor

3.  Control sleeve (CS) sensor

4.  Fuel temperature sensor

5.  Timer control valve (TCV)


Location of the connectors on the injection pump

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Terminal

Part name
A
–
B
TCV (–)
C
TCV (+)
D
–
E
Fuel temperature sensor (–)
F
CS sensor
G
CS sensor (+)
H
CS sensor (–)
I
Electronic governor (+)
J
Fuel cut solenoid valve
K
Fuel temperature sensor (+)
L
Electronic governor (–)

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Terminal

Part name
A
Timer position sensor
B
Timer position sensor (–)
C
Timer position sensor (+)
D
Injection pump EPROM (VCC)
E
Injection pump EPROM (DI/DO)
F
Injection pump EPROM (CLK)
G
Injection pump EPROM (CS)
H
Injection pump EPROM (ground)

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Terminal

Part name
A
Fuel pump speed sensor (+)
B
Fuel pump speed sensor (–)

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Terminal

Part name
A
TCV body (+)
B
TCV body (–)