Dodge Caliber. Manual — part 1003
•
When Monitored:
With the ignition on and the Glow Plug Module Glow Plug command on.
•
Set Condition:
The ECM detects an open or short on the Cylinder 2 Glow Plug circuit for 0.5 seconds.
Possible Causes
INTERMITTENT DTC
(A203) GLOW PLUG 2 CONTROL CIRCUIT OPEN
(A203) GLOW PLUG 2 CONTROL CIRCUIT SHORTED TO GROUND
(A203) GLOW PLUG 2 CONTROL CIRCUIT SHORTED TO VOLTAGE
GLOW PLUG 2
GLOW PLUG MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
CHECK FOR ACTIVE DTC
Ignition on, engine not running.
With the scan tool, Clear DTCs in the Engine Control Module (ECM).
Perform several ignition cycles leaving the ignition on for at least 10 seconds then off for 10 seconds.
With the scan tool, read the ECM DTCs.
Did this DTC set again?
Yes
>> Go To 2
No
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
2.
(A203) GLOW PLUG 2 CONTROL CIRCUIT OPEN
Turn the ignition off.
Disconnect the Glow Plug 2 harness connector.
Disconnect the Glow Plug Module harness connector.
Measure the resistance of the (A203) Glow Plug 2 Control circuit
between the Glow Plug 2 harness connector and the Glow Plug Module
harness connector.
Is the resistance below 10.0 ohms?
Yes
>> Go To 3
No
>> Repair the (A203) Glow Plug 2 Control circuit for an open.
Perform ECM Verification Test Ver. 1. (Refer to 9 - ENGINE
- DIAGNOSIS AND TESTING)
PM
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1299
3.
(A203) GLOW PLUG 2 CONTROL CIRCUIT SHORTED TO GROUND
Measure the resistance between ground and the (A203) Glow Plug 2
Control circuit at the Glow Plug 2 harness connector.
Is the resistance below 1000 ohms?
Yes
>> Repair the (A203) Glow Plug 2 Control circuit for a short to
ground.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
No
>> Go To 4
4.
(A203) GLOW PLUG 2 CONTROL CIRCUIT SHORTED TO VOLTAGE
Turn the ignition on.
Measure the voltage of the (A203) Glow Plug 2 Control circuit at the
Glow Plug 2 harness connector.
Is there voltage present on the (A203) Glow Plug 2 Control cir-
cuit?
Yes
>> Repair the (A203) Glow Plug 2 Control circuit for a short to
voltage
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
No
>> Go To 5
5.
GLOW PLUG 2
Turn the ignition off.
Refer to the Service Information and replace the Glow Plug 2.
Turn the ignition on.
With the scan tool, erase ECM DTCs.
Perform several ignition key cycles leaving the ignition on for at least 10 seconds per cycle.
With the scan tool, read ECM DTCs.
Does the scan tool display this DTC?
Yes
>> Go to 6
No
>> Test complete.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
9 - 1300
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
PM
6.
GLOW PLUG MODULE
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Glow Plugs and the
Glow Plug Module.
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Refer to any Technical Service Bulletins that may apply.
Were any problems found?
Yes
>> Repair as necessary.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Replace the Glow Plug Module in accordance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
PM
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1301
P0673-CYLINDER 3 GLOW PLUG CIRCUIT
For a complete wiring diagram Refer to Section 8W
9 - 1302
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
PM
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