Jeep Wrangler TJ. Manual — part 10
Symptom:
LOSS OF IGNITION RUN ONLY
When Monitored and Set Condition:
LOSS OF IGNITION RUN ONLY
When Monitored:
With the ignition in the run position the module monitors the Run Only
circuit for proper system voltage.
Set Condition:
If the voltage on the Run Only circuit drops below 4.5 volts, the code will
set.
POSSIBLE CAUSES
IGNITION SWITCH OUTPUT RUN CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT RUN CIRCUIT OPEN
ACM, FUSED IGNITION OUTPUT RUN CIRCUIT OPEN
CHECKING FOR A SHORTED RUN CIRCUIT
FUSED IGNITION SWITCH OUTPUT RUN CIRCUIT SHORT TO GROUND
ACM, FUSED IGNITION RUN CIRCUIT SHORT TO GROUND
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE :
All
ACM - ACTIVE DTC
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2
Turn the ignition off.
Remove and inspect the Airbag Run circuit fuse.
Is the Fuse open?
All
Yes
→ Go To 3
No
→ Go To 6
3
Remove the Airbag Run fuse.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the Fused Ignition Switch Output Run circuit between the
Run Fuse and ground.
Is the resistance below 10.0 ohms ?
All
Yes
→ Go To 4
No
→ Replace the defective fuse.
Perform __AIRBAG VERIFICATION TEST - VER 1.
37
AIRBAG
TEST
ACTION
APPLICABILITY
4
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the Fused Ignition Switch Output Run circuit between the
ACM connector and ground.
Is the resistance below 10K ohms ?
All
Yes
→ Repair the Fused Ignition Switch Output Run circuit for a short
to ground and replace Airbag Run Fuse.
Perform __AIRBAG VERIFICATION TEST - VER 1.
No
→ Go To 5
5
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
All
Repair
Replace the Airbag Control Module in accordance with Service
Instructions and replace the Run Only Fuse.
Perform __AIRBAG VERIFICATION TEST - VER 1.
6
Turn the ignition on.
Measure the voltage of the Ignition Switch Output Run circuit between the Airbag
Run circuit fuse and ground.
Is the voltage above approximately 4.5 volts?
All
Yes
→ Go To 7
No
→ Repair the open Ignition Switch Output Run circuit.
Perform __AIRBAG VERIFICATION TEST - VER 1.
7
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the Airbag Control Module connector.
NOTE: Check connectors - Clean and repair as necessary.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
Reinstall the airbag Run fuse.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION ON, THEN RECONNECT THE BATTERY.
Measure the voltage of the Fused Ignition Switch Output Run circuit at the Airbag
Control Module connector.
Is the voltage above approximately 4.5 volts?
All
Yes
→ Go To 8
No
→ Repair the an open or high resistance in the Fused Ignition
Switch Output Run circuit.
Perform __AIRBAG VERIFICATION TEST - VER 1.
38
AIRBAG
LOSS OF IGNITION RUN ONLY —
Continued
TEST
ACTION
APPLICABILITY
8
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.
All
Repair
Replace the Airbag Control Module in accordance with Service
Instructions.
Perform __AIRBAG VERIFICATION TEST - VER 1.
39
AIRBAG
LOSS OF IGNITION RUN ONLY —
Continued
Symptom:
MODULE NOT CONFIGURED FOR PAB OFF SWITCH
When Monitored and Set Condition:
MODULE NOT CONFIGURED FOR PAB OFF SWITCH
When Monitored:
When the ACM is not configured for an ON - OFF switch, the ACM
monitors the Passenger Airbag On - Off Switch inputs to determine if a switch is present.
Set Condition:
The code will set, if the ACM detects a Passenger Airbag ON - OFF Switch
connected to the Airbag Control Module.
POSSIBLE CAUSES
INTERMITTENT CODES PRESENT
ACM NOT CONFIGURED FOR PAB OFF SWITCH
ACM, MODULE NOT CONFIGURED FOR PAB OFF SWITCH
PASSENGER AIRBAG INDICATOR DRIVER CIRCUIT SHORT
PAB MUX SWITCH CIRCUIT SHORT TO GROUND
PAB MUX SWITCH CIRCUIT SHORT TOGETHER
ACM, PAB ON - OFF SWITCH CIRCUIT SHORTED
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
All
ACM - ACTIVE DTC
ACM - STORED DTC
No problem found at this time.
Perform __AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2
Inspect vehicle for a Passenger Airbag On - Off Switch located in the center of the
instrument panel.
Is this vehicle equipped with a Passenger Airbag On - OFF Switch?
All
Yes
→ Go To 3
No
→ Go To 4
40
AIRBAG
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