JLG 15/20MSP Service Manual - Manual (Page 142)

SECTION 6 - TROUBLESHOOTING
6-22 – JLG Lift – 3121231
Code 08 - Right Drive Motor - Disconnected
Check For These Obvious Conditions First:
• Check right drive motor M2 connector at the Traction Control Module for secure and proper connection.
Code 09 - Left Brake - Disconnected
Check For These Obvious Conditions First:
• Check left drive motor M1 connector at the Traction Control Module for secure and proper connection.
Code 10 - Right Brake - Disconnected
Check For These Obvious Conditions First:
• Check right drive motor M2 connector at the Traction Control Module for secure and proper connection.
Table 6-12. Code 08 - Right Drive Motor Disconnected
STEP ACTION SPEC YES NO
1. Check resistance across positive (+) and negative (–) leads in M2 connec-
tor wiring harness going to the right drive motor. Is reading within spec? .1 to .3 ohms Replace Traction
Module
Go to Step 2
2. Repair or replace right drive motor wiring, brushes or motor.
(For brush replacement, see Section 3 of this Service Manual) — — —
Table 6-13. Code 09 - Left Brake - Disconnected
STEP ACTION SPEC YES NO
1. Check resistance across positive (+) and negative (–) leads in M1 connec-
tor wiring harness going to the left drive motor brake assembly. Is reading
within spec? See Table 6-2 Replace Traction
Module
Go to Step 2
2. Repair or replace left brake wiring or left brake assembly. — — —
Table 6-14. Code 10 - Right Brake - Disconnected
STEP ACTION SPEC YES NO
1. Check resistance across positive (+) and negative (–) leads in M2 connec-
tor wiring harness going to the right drive motor brake assembly. Is reading
within spec? See Table 6-2 Replace Traction
Module
Go to Step 2
2. Repair or replace right brake wiring or right brake assembly. — — —