Page 811 - Workshop Manual - Tunland (2017)

DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-125

P441，P442，P596，P597-BATTERY AND ELECTRICAL 04

CHARGING SYSTEM FAILURE
P441-BATTERY 1 VOLTAGE - DATA IS VALID BUT BELOW

NORMAL OPERATING RANGE - MEDIUM SEVERITY LEVEL
P442-BATTERY 1 VOLTAGE - DATA IS VALID BUT ABOVE
NORMAL OPERATING RANGE - MEDIUM SEVERITY LEVEL

P596-CHARGING SYSTEM VOLTAGE - DATA IS VALID BUT
ABOVE NORMAL OPERATING RANGE - MEDIUM SEVERITY

LEVEL
P597-CHARGING SYSTEM VOLTAGE - DATA IS VALID BUT
BELOW NORMAL OPERATING RANGE - MEDIUM SEVERITY

LEVEL
P598-CHARGING SYSTEM VOLTAGE - DATA IS VALID BUT

BELOW NORMAL OPERATING RANGE - HIGHEST SEVERITY
LEVEL

Description
1 . The engine control module (ECM) obtains a stable voltage through the switch-free
battery guide line connected directly to the battery positive (+) terminal.There
is one 30A fuses in the switch-free battery guide line to protect the OEM harness.
When the key switch goes to the ON position, the ECM receives the switch
controlled battery input via the vehicle key switch wire.The battery loop lead is
directly connected to the negative terminal of the battery.

DTC inspection
DTC DTC definition Trouble location
conditions

Battery 1 voltage -
data is valid but
P441 below normal
operating range - • attery wiring
medium severity level harness or ECM
Battery 1 voltage - • When the key connector is in poor
data is valid but switch is in ON contact, wiring
P442 above normal position, the harness is broken
operating range - diagnosis continues or shorted
medium severity level to run • Generator and its
harness
Charging system
voltage - data is valid • ECM
P596 but above normal
operating range -
medium severity level