Dodge Ram Truck 1500-2500-3500. Manual — part 350
IGNITION RUN/START MISMATCH (FCM)
8I - 2
IGNITION CONTROL - ELECTRICAL DIAGNOSTICS
DR/DH
IGNITION RUN/START MISMATCH (FCM) (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The FCM detects an ignition run/start mismatch.
Possible Causes
INSTRUMENT CLUSTER
POWER DISTRIBUTION CENTER
FRONT CONTROL MODULE
Diagnostic Test
1.
CHECK FOR AN ACTIVE DTC
Turn the ignition on.
With the DRB, erase the FCM DTC’s.
Turn the ignition off then turn the ignition on and wait approximately 1 minute.
With the DRB, read the FCM DTC’s.
Did this DTC reset?
Yes
>> Go To 2
No
>> The condition that set this DTC is no longer present. Using the wiring diagram/schematic as a guide,
inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness con-
nectors for broken, bent, pushed out, and corroded terminals.
2.
CHECK THE STATUS OF THE INSTRUMENT CLUSTER
NOTE: Ensure the battery is fully charged before proceeding with this test.
NOTE: Diagnose and repair any Airbag, Instrument Cluster, or PCM DTCs before proceeding with this test.
With the DRB, select MIC, Monitors and observe the ignition state.
While observing the ignition state, start the vehicle.
Does the DRB display run and start when the ignition switch is in those positions?
Yes
>> Go To 3
No
>> Replace and program the Instrument Cluster in accordance with the service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1.)
DR/DH
IGNITION CONTROL - ELECTRICAL DIAGNOSTICS
8I - 3
IGNITION RUN/START MISMATCH (FCM) (CONTINUED)
3.
CHECK THE FUSED IGNITION SWITCH OUTPUT CIRCUIT
NOTE: Check IPM fuse #50 for an open before proceeding with
this test.
Turn the ignition off.
Remove the FCM from the IPM.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Igni-
tion Switch Output circuit (cavity 48).
Is the test light illuminated?
Yes
>> Replace the Front Control Module in accordance with the
service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)
No
>> Replace the Power Distribution Center in accordance with
the service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)
8I - 4
IGNITION CONTROL - ELECTRICAL DIAGNOSTICS
DR/DH
IGNITION CONTROL - SERVICE INFORMATION
TABLE OF CONTENTS
page
page
IGNITION CONTROL - SERVICE INFORMATION
. . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ENGINE FIRING ORDER - 3.7L V-6
ENGINE FIRING ORDER – 4.7L V-8
FIRING ORDER / CABLE ROUTING – 5.7L
V-8 ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
. . . . . . . . . . . . . . . . . . . 9
. . . . . . . . . . . . . . . . . . . . . . . 10
IGNITION COIL RESISTANCE - 3.7L V-6
IGNITION COIL RESISTANCE - 4.7L V-8
IGNITION COIL RESISTANCE - 5.7L V-8
IGNITION COIL RESISTANCE - 8.3L V-10
. . . . . . . . . . . . . . . . . . . . . 11
RELAY-AUTO SHUT DOWN
OPERATION - ASD SENSE - PCM INPUT
DIAGNOSIS AND TESTING - ASD AND FUEL
. . . . . . . . . . . . . . . . . . . . . . . 11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
. . . . . . . . . . . . . . . . . . . . . . . . . 13
SENSOR-CAMSHAFT POSITION
. . . . . . . . . . . . . . . . . . . . . . . . . 13
. . . . . . . . . . . . . . . . . . . . . . . . . 14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.3L - REPLACING WITH NEW SENSOR
8.3 L - REPLACING OLD SENSOR WITH
ORIGINAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . . . . . . 20
8.3L - INSTALLATION - WITH NEW SENSOR
8.3L - REPLACING OLD SENSOR WITH
ORIGINAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
IGNITION COIL
. . . . . . . . . . . . . . . . . . . . . . . . . 23
. . . . . . . . . . . . . . . . . . . . . . . . . . . 25
. . . . . . . . . . . . . . . . . . . . . . . . . . . 26
. . . . . . . . . . . . . . . . . . . . . . . . . 29
. . . . . . . . . . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . . . . . . . . . . . 31
SENSOR-KNOCK
. . . . . . . . . . . . . . . . . . . . . . . . . 31
. . . . . . . . . . . . . . . . . . . . . . . . . . . 31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
. . . . . . . . . . . . . . . . . . . . . . . . . 33
SPARK PLUG
. . . . . . . . . . . . . . . . . . . . . . . . . 34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
. . . . . . . . . . . . . . . . . . . . . . . . . 35
IGNITION COIL CAPACITOR
. . . . . . . . . . . . . . . . . . . . . . . . . 36
. . . . . . . . . . . . . . . . . . . . . . . . . . . 36
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
. . . . . . . . . . . . . . . . . . . . . . . . . 37
SPARK PLUG CABLE
. . . . . . . . . . . . . . . . . . . . . . . . . 37
. . . . . . . . . . . . . . . . . . . . . . . . . . . 37
. . . . . . . . . . . . . . . . . . . . . . . . . . . 37
. . . . . . . . . . . . . . . . . . . . . . . . . 38
. . . . . . . . . . . . . . . . . . . . . . . 38
. . . . . . . . . . . . . . . . . . . . . . . . . 39
PUSH-BUTTON STARTER SWITCH
. . . . . . . . . . . . . . . . . . . . . . . . . 40
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
. . . . . . . . . . . . . . . . . . . . . . . . . 41
IGNITION CONTROL - SERVICE INFORMATION
DESCRIPTION
The ignition system is controlled by the Powertrain Control Module (PCM) on all engines.
3.7L V-6 ENGINE
The 3.7L V-6 engine uses a separate ignition coil for each cylinder. The one-piece coil bolts directly to the cylinder
head. Rubber boots seal the secondary terminal ends of the coils to the top of all 6 spark plugs. A separate elec-
trical connector is used for each coil.
DR/DH
IGNITION CONTROL - SERVICE INFORMATION
8I - 5
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст