 |
|||
|
|
|||
|
Page Title:
P187 4 - VERNIER CONTROL INPUT FAILED LOW (VOLTAGE LOW) (ALSO CALLED VARIABLE SPEED GOVERNOR - VSG) (cont) |
|
||
| ||||||||||
|
|
 TM 9-2320-364-20-1
Section IV. TROUBLESHOOTING CHARTS (Cont.)
E. FLASH CODE:
11
J1587 CODE:
P187 4 - VERNIER CONTROL INPUT FAILED LOW (VOLTAGE LOW)
(ALSO CALLED VARIABLE SPEED GOVERNOR - VSG)
STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
11-5
Check Vernier
Control Connectors
Inspect terminals at the vernier
Terminals and
Replace vernier control
control connectors (sensor side
connectors are okay.
(para 7-100). Then go to 11-30.
and harness side) for damage;
bent, corroded, and unseated
Problem found.
Repair terminals/connectors
pins or sockets.
(para 7-101). Then go to 11-30.
11-6
Check for +5 Volts
Remove jumper.
Between
Go to 11-7.
Turn ignition on.
4 to 6 volts.
Read voltage on vernier control
connector, socket C (red lead)
Less than
Go to 11-10.
to socket A (black lead).
4 volts.
Greater than
Go to 11-12.
6 volts.
11-7
Check for Short
Turn ignition off.
Less than or
Signal line (ckt #1525) is shorted
Disconnect the vehicle harness
equal to 10,000 ohms.
to the return line (ckt #952).
connector ECM.
Repair short. Then go to 11-30.
Read resistance between sockets
A and B on the vernier control
Greater than
Go to 11-8.
connector.
10,000 ohms or open.
11-8
Check for Signal Open
Install a jumper wire between
Less than
Go to 11-9.
sockets A and B of the vernier
or equal to 5 ohms.
control connector.
Read resistance between sockets
Greater than
Signal line (ckt #510) is open,
D1 (510) & C3 (952) on the vehicle
5 ohms or open.
and/or signal return (ckt #952)
harness connector.
is open. Repair open. If no
open was found, check ECM
terminals A3, D1, C3, and vernier
control pins. Then go to 11-30.
2-619
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals