Page 13 of 5267

When Monitored:
With ignition on. Battery voltage above 10 volts.
Set Condition:
The actual ASD state is not equal to the desired ASD state. One Trip Fault. Three good trips to turn off the
MIL.
Possible Causes
INTERNAL FUSED B+ CIRCUITS
(K51) ASD RELAY CONTROL CIRCUIT OPEN
(K51) ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND
ASD RELAY
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.ASD RELAY OPERATION
Ignition on, engine not running.
With a scan tool, actuate the ASD Relay.
Is the ASD Relay operating?
Ye s>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 2
2.INTERNAL FUSED B+ CIRCUITS
Turn the ignition off.
Remove the ASD Relay from the IPM.
Using a 12-volt test light connected to ground, probe the Internal Fused
B+ circuits in the IPM.
Does the test light illuminate brightly?
Ye s>>
Go To 3
No>>
Repair the open or short to ground in the Internal Fused B+
circuits. Inspect and replace any open fuses.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
3.ASD RELAY
Measure the resistance of the ASD Relay Coil.
Is the resistance between 60 to 80 ohms?
Ye s>>
Go To 4
No>>
Replace the ASD Relay.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
Page 38 of 5267

When Monitored:
With the ignition on. Battery voltage greater than 10 volts.
Set Condition:
A shorted condition is detected in the ASD control circuit. One Trip Fault.Three good trips to turn off the MIL.
Possible Causes
(K342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO GROUND
FUEL INJECTOR
IGNITION COIL
PCM
TIPM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.ASD OPERATION
Ignition on, engine not running.
With a scan tool under the ECM Actuators, actuate the ASD Circuit.
Are the Injectors actuating?
Ye s>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 2
2.ASD OPERATION FROM THE ECM
Turn the ignition off.
Disconnect the C2 TIPM harness connector.
Ignition on, engine not running.
Using the scan tool under the ECM Actuators, actuate the ASD Circuit.
With a 12-volt test light connected to ground, probe the (K51) ASD Con-
trol circuit in the TIPM C2 harness connector.
Does the test light illuminate brightly and flash on an off?
Ye s>>
Go To 3
No>>
Perform the Diagnostic Procedure for P0685-ASD CON-
TROL CIRCUIT. (Refer to 9 - ENGINE - DIAGNOSIS AND
TESTING)
Page 39 of 5267

3.(K342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO GROUND
Turn the ignition off
Disconnect the C10 TIPM harness connector.
Measure resistance between ground and (K342) ASD Control Output
circuit at the C10 TIPM harness connector.
Istheresistancebelow100ohms?
Ye s>>
Go To 4
No>>
Go To 7
4.(K342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO GROUND AT THE FUEL INJECTORS
While checking for a short to ground at C10 TIPM harness connector,
disconnect the Fuel Injector harness connectors one at a time.
Does the resistance change to above 100 ohms when any of
the Fuel Injector harness connectors are disconnected?
Ye s>>
Replace the Fuel Injector that causes the resistance to
increase above 100 ohms when disconnected.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 5
5.(K342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO GROUND AT THE IGNITION COILS
While checking for a short to ground at C10 TIPM harness connector,
disconnect the Ignition Coil harness connectors one at a time.
Does the resistance change to above 100 ohms when any of
the Ignition Coil harness connectors are disconnected?
Ye s>>
Replace the Coil that causes the resistance to increase
above 100 ohms when disconnected.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 6
Page 42 of 5267

When Monitored:
With the ignition on. Battery voltage greater than 10 volts.
Set Condition:
A shorted condition is detected in the ASD control circuit. One Trip Fault.Three good trips to turn off the MIL.
Possible Causes
(K342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE
FUEL INJECTOR
IGNITION COIL
ECM
TIPM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.ACTIVE DTC
Ignition on, engine not running.
With a scan tool, read DTCs.
Is the DTC active at this time?
Ye s>>
Go To 2
No>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2.ASD OPERATION FROM THE ECM
Turn the ignition off.
Disconnect the C2 TIPM harness connector.
Ignition on, engine not running.
Using the scan tool under the ECM Actuators, actuate the ASD Circuit.
With a 12-volt test light connected to voltage, probe the (K51) ASD
Control circuit in the TIPM C2 harness connector.
Does the test light illuminate brightly and flash on an off?
Ye s>>
Go To 3
No>>
Perform the Diagnostic Procedure for P0685-ASD CON-
TROL CIRCUIT. (Refer to 9 - ENGINE - DIAGNOSIS AND
TESTING)
Page 43 of 5267

3.(K342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE
Turn the ignition off
Disconnect the C10 TIPM harness connector.
Measure the voltage on the (K342) ASD Control Output circuit at the
C10 TIPM harness connector.
Is the voltage above 10 volts?
Ye s>>
Go To 4
No>>
Go To 7
4.(K342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE AT THE FUEL INJECTORS
While checking for a short to voltage at C10 TIPM harness connector,
disconnect the Fuel Injector harness connectors one at a time.
Does the voltage change to below 10 volts when any of the
Fuel Injector harness connectors are disconnected?
Ye s>>
Replace the Fuel Injector that causes the voltage to
decrease below 10 volts when disconnected.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 5
5.(K342) ASD CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE AT THE IGNITION COILS
While checking for a short to voltage at C10 TIPM harness connector,
disconnect the Ignition Coil harness connectors one at a time.
Does the voltage change to below 10 volts when any of the
Ignition Coil harness connectors are disconnected?
Ye s>>
Replace the Coil that causes the voltage to decrease below
10 volts when disconnected.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 6
Page 46 of 5267

When Monitored:
With the ignition on. Battery voltage greater than 10 volts.
Set Condition:
An open condition is detected in the ASD control circuit. One Trip Fault. Three good trips to turn off the MIL.
Possible Causes
(K342) ASD CONTROL OUTPUT CIRCUIT OPEN
FUEL INJECTOR
IGNITION COIL
PCM
TIPM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.ACTIVE DTC
Ignition on, engine not running.
With a scan tool, read DTCs.
Is the DTC active at this time?
Ye s>>
Go To 2
No>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2.ASD OPERATION FROM THE PCM
Turn the ignition off.
Disconnect the C2 TIPM harness connector.
Ignition on, engine not running.
Using the scan tool under the PCM Actuators, actuate the ASD Circuit.
With a 12-volt test light connected to voltage, probe the (K51) ASD
Control circuit in the TIPM C2 harness connector.
Does the test light illuminate brightly and flash on an off?
Ye s>>
Go To 3
No>>
Perform the Diagnostic Procedure for P0685-ASD CON-
TROL CIRCUIT. (Refer to 9 - ENGINE - DIAGNOSIS AND
TESTING)
Page 47 of 5267

3.(K342) ASD CONTROL OUTPUT CIRCUIT
Turn the ignition off
Connect the C2 TIPM harness connector.
Ignition on, engine not running.
Back probe the C10 TIPM harness connector at the (K342) ASD Control Output circuit terminal and measure the
voltage on the (K342) ASD Control Output circuit.
Is the voltage above 10 volts?
Ye s>>
Go To 4
No>>
Go To 7
4.(K342) ASD CONTROL OUTPUT CIRCUIT OPEN TO THE FUEL INJECTORS
Measure the resistance of the (K342) ASD Control Output circuit from
the C10 TIPM harness connector to the each Fuel Injector.
Is the resistance above 5.0 ohms at any of the Fuel Injector
harness connectors?
Ye s>>
Repair the open in the (K342) ASD Control Output circuit to
the appropriate Fuel Injector.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 5
5.(K342) ASD CONTROL OUTPUT CIRCUIT OPEN TO THE IGNITION COILS
Measure the resistance of the (K342) ASD Control Output circuit from
the C10 TIPM harness connector to the each Ignition Coil.
Is the resistance above 5.0 ohms at any of the Ignition Coil
harness connectors?
Ye s>>
Repair the open in the (K342) ASD Control Output circuit to
the appropriate Ignition Coil.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 6
Page 50 of 5267

When Monitored:
With the ignition on. Battery voltage greater than 10 volts.
Set Condition:
An overcurrent condition is detected in the ASD control circuit. One Trip Fault. Three good trips to turn off the
MIL.
Possible Causes
(K342) ASD CONTROL OUTPUT CIRCUIT EXCESSIVE RESISTANCE
FUEL INJECTOR
IGNITION COIL
PCM
TIPM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.ACTIVE DTC
Ignition on, engine not running.
With a scan tool, read DTCs.
Is the DTC active at this time?
Ye s>>
Go To 2
No>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2.ASD OPERATION FROM THE PCM
Turn the ignition off.
Disconnect the C2 TIPM harness connector.
Ignition on, engine not running.
Using the scan tool under the PCM Actuators, actuate the ASD Circuit.
With a 12-volt test light connected to voltage, probe the (K51) ASD
Control circuit in the TIPM C2 harness connector.
Does the test light illuminate brightly and flash on an off?
Ye s>>
Go To 3
No>>
Perform the Diagnostic Procedure for P0685-ASD CON-
TROL CIRCUIT. (Refer to 9 - ENGINE - DIAGNOSIS AND
TESTING)