Chrysler 300/300 Touring/300C, Dodge Magnum. Manual - part 220
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When Monitored:
With the ignition on.
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Set Condition:
If the Anti-Lock Brakes Module detects system voltage is below 7.5 volts.
Possible Causes
ECM OR PCM DTCs PRESENT
VEHICLE BATTERY / CHARGING SYSTEM
ANTI-LOCK BRAKES MODULE
Diagnostic Test
1.
DTC’S IN THE PCM
NOTE: This DTC must be active for the results of this test to be valid.
Turn the ignition on.
With the scan tool, read and record DTCs from the PCM.
With the scan tool, read and record Freeze Fame information.
With the scan tool, erase DTCs.
Start the engine.
With the scan tool, read and record DTCs.
With the scan tool read DTCs from the PCM.
Are any charging system codes present?
Yes
>> Repair the charging system DTC in the PCM.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Go To 2
2.
CHARGING SYSTEM FAILURE
Start the engine.
Connect voltmeter to vehicle battery.
Is the vehicle battery voltage under 8.2 volts?
No
>> Go To 3
Yes
>> Repair the charging system per service information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
3.
CHARGING POWER SUPPLY VOLTAGE
With a scan tool read Power Supply Voltage.
Is Power Supply Voltage under 8.2 volts?
No
>> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
Yes
>> Replace the Anti-Lock Brakes Module in accordance with the Service Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
5 - 322
BRAKES - ABS ELECTRICAL DIAGNOSTICS
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