JLG 3246ES Service Manual - Manual (Page 175)

SECTION 6 - DIAGNOSTIC TROUBLE CODES
3121166 – JLG Lift – 6-23
9970 POWER MODULE FAIL-
URE - INTERNAL ERROR
Drive, Steer, & Lift Prevented • The System Module detected a mismatch in the
redundant RAM information stored in the interface
PCB.
• Cycle machine, if error still exists, replace System
Module.
• ZAPI - HEALTH (Status LED) - ON
9971 POWER MODULE FAIL-
URE - INTERNAL ERROR
Drive, Steer, & Lift Prevented • The System Module’s MC/EB valve activation pin is
shorted. This is an internal fault.
• Cycle machine, if error still exists, replace System
Module.
• ZAPI - HEALTH (Status LED) - FLASHING
99143 POWER MODULE FAIL-
URE - INTERNAL ERROR
Drive, Steer, & Lift Prevented • The System Module’s power and interface PCB digital
inputs do not agree.
• Cycle machine, if error still exists, replace System
Module.
• ZAPI - HEALTH (Status LED) - FLASHING
99144 POWER MODULE FAIL-
URE - INTERNAL ERROR
Drive, Steer, & Lift Prevented • The System Module’s MC feedback from the interface
PCB disagrees with the feedback from the power PCB.
• Cycle machine, if error still exists, replace System
Module.
• ZAPI - HEALTH (Status LED) - FLASHING
99145 POWER MODULE FAIL-
URE - INTERNAL ERROR
Drive, Steer, & Lift Prevented • The System Module’s enable for the power PCB
requested a drive motor or valve activation when not
expected.
• Cycle machine, if error still exists, replace System
Module.
• ZAPI - HEALTH (Status LED) - FLASHING
99146 POWER MODULE FAIL-
URE - INTERNAL ERROR
Drive, Steer, & Lift Prevented • The System Module’s lift down feedback voltage to
the interface and power PCB’s disagrees.
• Cycle machine, if error still exists, replace System
Module.
• ZAPI - HEALTH (Status LED) - FLASHING
99147 POWER MODULE FAIL-
URE - INTERNAL ERROR
Drive, Steer, & Lift Prevented • The System Module’s VMN feedback voltage to the
interface and power PCB’s disagrees.
• Cycle machine, if error still exists, replace System
Module.
• ZAPI - HEALTH (Status LED) - FLASHING
99148 POWER MODULE FAIL-
URE - INTERNAL ERROR
Drive, Steer, & Lift Prevented • The System Module’s setpoint request from the inter-
face PCB does not match the input state.
• Cycle machine, if error still exists, replace System
Module.
• ZAPI - HEALTH (Status LED) - FLASHING
99149 POWER MODULE FAIL-
URE - INTERNAL ERROR
Drive, Steer, & Lift Prevented • The System Module encountered an unexpected
software issue.
• Cycle machine, if error still exists, replace System
Module.
• ZAPI - HEALTH (Status LED) - FLASHING
9-9 Hardware
DTC FAULT MESSAGE DESCRIPTION CHECK