Lincoln Nautilus: Battery, Mounting and Cables / Battery. Diagnosis and Testing
General Equipment
Diagnostic Battery Charger |
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Use Ford approved battery test equipment.
-
Midtronics MDX-650 or P-300/P-600/490/1050
-
Midtronics GRX-3590 or 3000
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST A: BATTERY CONDITION TEST
Normal Operation and Fault Conditions
Battery condition is determined by measuring battery
terminal voltage after a specific discharge current is applied for a
specified time period.
Possible Sources
- Battery
- Wiring, terminals or connectors
Visual Inspection and Pre-checks
- Inspect wiring, terminals and connectors.
- Inspect the battery.
- Inspect battery mounting
- Inspect high current BJB connections.
|
A1 TEST THE BATTERY CONDITION |
NOTE:
Failure to fully charge the battery before retesting may cause false readings.
-
Using the Diagnostic Battery Charger and the battery
cables removed from the battery, verify the battery condition.
Is the battery OK?
Yes |
RETURN the battery to service.
|
No |
If the analyzer reads REPLACE BATTERY or REPLACE-BAD CELL, INSTALL a new battery. REFER to: Battery (414-01 Battery, Mounting and Cables)
.
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System Operation
Battery and Cables
Vehicles
are equipped with a 12-volt, Absorbent Glass Mat (AGM) maintenance-free
battery. The battery is a 12V DC source connected in a negative ground
system and is a voltage stabilizer for the 12V electrical system...
Charging
WARNING:
Before beginning any service procedure in this section,
refer to Safety Warnings in section 100-00 General Information. Failure
to follow this instruction may result in serious personal injury...
Other information:
System Operation
System Diagram - Gauges
Item
Description
1
IPC
2
GWM
3
PCM
4
Fuel pump and sender unit
5
Fuel level sensor
6
AWD
7
AWD module
8
Tachometer
9
Speedometer
10
Temperature
11
Fuel
Network Message Chart - Gauges
Module Network Input Messages - IPC
..
Diagnostic Trouble Code (DTC) Chart
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
Module
DTC
Description
Action
APIM
U2400:81
Ethernet Failure With Gateway Module A (GWM): Invalid Serial Data Received
GO to Pinpoint Test A
APIM..