Toyota 7BPUE15 Service Manual page 131

Section 6. Codes and Tests
Code 4,6
Code
4 , 6
Corrective Actions and Checks
1. If a communication failure occurs, the
continue to attempt communication. This
communication will be evident by viewing
the RECEIVE (IL3/IL10) and TRANSMIT
and the steer/tractor manager. The carriage
manager will then send (initiate) a message
to the steer/tractor manager and it will
acknowledge the message by flashing its
TRANSMIT LED. It is possible to determine
the faulty module (carriage manager or
LEDs. See Figure 7-5 on page 7-8 and
Figure 7-8 on page 7-9.
2. If the failure is on the carriage manager, the
RECEIVE LED (IL3) will be flashing but the
TRANSMIT LED (IL4) will not. Check
over-the-mast cable. If cable is OK, replace
carriage manager.
3. If the failure is on the steer/tractor
manager, the RECEIVE LED (IL10) will be
flashing but the TRANSMIT LED (IL9) will
not. Check over-the-mast cable. If cable is
OK, replace steer/tractor manager.
Toyota Orderpicker Model 7BPUE 15 Service Manual
00700-CL222-05, 1 5 March 2005