TM 10-3930-675-20-1
0027 00-7
TRANSMISSION SPEED SENSORS TROUBLESHOOTING - CONTINUED
0027 00
Table 7. Error Code 655 - Internal Speed Sensor Failure, Open Circuit or Short Circuit to Battery
Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 655 - Internal Speed Sensor Failure,
Open Circuit or Short Circuit to Battery
1. Remove cab transmission and
steering ECU panel cover and
check
transmission
ECU
connector for proper con-
nection (WP 0079 00).
Connect loose or disconnected
connector.
2. Remove cab rear wall center
panel
cover
and
check
connector X173 for proper
connections.
Connect loose or disconnected
connectors.
3. Move cab to transport position
and
remove
transmission
access covers (WP 0135 00).
4. Check transmission electrical
harness connector 752 for
proper connection at internal
speed sensor.
Connect loose or disconnected
connectors.
5. Check continuity between
connector 752 pin 1 and
connector X173 pin 8 and
between connector 752 pin 2
and connector X173 pin 9.
a. If continuity is not present,
repair or replace connectors
(WP 0111 00).
b. If wiring harness must be
replaced, notify SRA.
6. Disconnect connector from
transmission ECU.
7. Check continuity between
transmission ECU connector
pin 42 and connector X173 pin
8 and between transmission
ECU connector pin 3 and
connector X173 pin 5.
a. If continuity is not present,
repair or replace connectors
(WP 0111 00).
b. If wiring harness must be
replaced, notify SRA.
8. Disconnect
transmission
internal
speed
sensor
connector 752 and perform
internal resistance check of
internal
speed
sensor.
Resistance should be 1050 +/-
100 ohms.
If resistance is not as specified,
replace internal speed sensor
(WP 0095 00).
