Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 460
•
When Monitored:
With the ignition on.
•
Set Condition:
The Front Control Module will set this DTC within 500ms if the (P307) Accessory Delay Relay Control circuit is
open.
Possible Causes
(P307) ACCESSORY DELAY RELAY CONTROL CIRCUIT OPEN
ACCESSORY DELAY RELAY
FRONT CONTROL MODULE
Diagnostic Test
1.
CHECK FOR ACTIVE DTC
With the scan tool, read the active DTC’s.
Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds.
With the scan tool, read the active DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 2
No
>> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con-
nectors. Look for broken, bent, pushed out, or corroded terminals.
2.
ACCESSORY DELAY RELAY
Turn the ignition off.
Install a substitute relay in place of the original Accessory Delay Relay.
Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds.
With the scan tool, read the active FCM DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 3
No
>> Replace the original Accessory Delay Relay.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
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IGNITION SYSTEM - ELECTRICAL DIAGNOSTICS
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3.
(P307) ACCESSORY DELAY RELAY CONTROL CIRCUIT OPEN
Turn the ignition off.
Remove the FCM from the IPM.
Remove the Accessory Delay Relay from the Rear Power Distribution
Module.
Measure the resistance of the Accessory Delay Relay Control circuit
from the Front Control Module PDM connector to the relay connector.
Is the resistance below 10.0 ohms?
No
>> Repair the Accessory Delay Relay Control circuit for an
open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
Yes
>> Inspect the wiring and connectors for damage or shorted
circuits. If OK, replace and program the Front Control Mod-
ule in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
LX
IGNITION SYSTEM - ELECTRICAL DIAGNOSTICS
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B2122-IGNITION RUN CONTROL CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
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IGNITION SYSTEM - ELECTRICAL DIAGNOSTICS
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•
When Monitored:
With the ignition on.
•
Set Condition:
The Front Control Module will set this DTC within 500ms if the (F921) or (F923) Run Relay Control circuit
voltage is open or shorted to ground.
Possible Causes
(F921) or (F923) RUN RELAY CONTROL CIRCUIT OPEN OR SHORTED TO GROUND
RUN RELAY
FRONT CONTROL MODULE
Diagnostic Test
1.
CHECK FOR ACTIVE DTC
With the scan tool, read the active DTC’s.
Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds.
With the scan tool, read the active DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 2
No
>> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con-
nectors. Look for broken, bent, pushed out, or corroded terminals.
2.
RUN RELAY
Turn the ignition off.
Install a substitute Run Relay in place of the original Run Relay.
Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds.
With the scan tool, read the active FCM DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 3
No
>> Replace the original Run Relay.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
LX
IGNITION SYSTEM - ELECTRICAL DIAGNOSTICS
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