VEH5V - VEHICLE HARNESS +5 VOLTS SUPPLY (CONT'D) -726280839

TM 9-2320-364-20-1

Section IV. TROUBLESHOOTING CHARTS (Cont.)

E. VEH5V - VEHICLE HARNESS +5 VOLTS SUPPLY (CONT'D)

STEP/SEQUENCE

RESULT

WHAT TO DO NEXT

VEH5V-4

Check for +5 Volt

Short Ground

Remove jumper wire.

Both readings are

Go to VEH5V-10.

Disconnect vernier control

greater than 10,000

(para 7-100).

ohms or open.

Read resistance between pins A

and C of the TPS connector.

Either reading is

Go to VEH5V-6.

Also read resistance between pin

less than or equal

B or the TPS connector and

to 10,000 ohms.

a good ground.

VEH5V-5

(Deleted)

VEH5V-6

+5 Volts Check

Using the Vernier

Control

Turn ignition on.

Less than

The engine +5 volt line (ckt #916)

Read voltage on the vernier

4.7 volts.

is shorted to either the sensor

control connector, socket C

return line (ckt #952) or to

(red lead) to socket A

chassis ground. Repair short.

(black lead).

Then go to VEH5V-30.

Greater than

Go to VEH5V-12.

or equal to 4.7 volts.

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