Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1376

P0616-STARTER CONTROL CIRCUIT LOW

For a complete wiring diagram Refer to Section 8W

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ENGINE ELECTRICAL DIAGNOSTICS - DIESEL

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When Monitored:
With the ignition on and the Starter Relay command off.

•

Set Condition:
The ECM detects a short to ground on the (T752) Engine Starter Motor Relay Control circuit for 1.0 second.

Possible Causes

INTERMITTENT DTC

(T752) ENGINE STARTER MOTOR RELAY CONTROL CIRCUIT SHORTED TO GROUND

(T752) ENGINE STARTER MOTOR RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCE

STARTER RELAY

ENGINE CONTROL MODULE (ECM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test

1.

DTC IS ACTIVE

Ignition on, engine not running.

With the scan tool, Clear DTCs in the Engine Control Module (ECM).

Crank the engine for five seconds.

With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

>> Go To 2

No

>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -

DIAGNOSIS AND TESTING)

2.

(T752) ENGINE STARTER MOTOR RELAY CONTROL CIRCUIT SHORTED TO GROUND

Turn the ignition off.

Disconnect the Starter Relay connector.

Disconnect the Engine Control Module (ECM) connector.

Measure the resistance between ground and the (T752) Engine Starter
Motor Relay Control circuit in the Starter Relay connector.

Is the resistance below 1000.0 ohms?

Yes

>> Repair the (T752) Engine Starter Motor Relay Control circuit

for a short to ground.

Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)

No

>> Go to 3

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3.

(T752) ENGINE STARTER MOTOR RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCE

Measure the resistance of the (T752) Engine Starter Motor Relay Con-
trol circuit between the Starter Relay connector and the Engine Control
Module (ECM) connector.

Is the resistance below 10.0 ohms?

Yes

>> Go to 4

No

>> Repair the (T752) Engine Starter Motor Relay Control circuit

for an open circuit or high resistance.

Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)

4.

STARTER RELAY

Connect the Engine Control Module (ECM) connector.

Install a known good relay in place of the vehicle’s Starter Relay.

Turn the ignition on.

With the scan tool, Clear DTCs.

Crank the engine for five seconds.

With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

>> Go to 5

No

>> Replace the Starter Relay in accordance with the Service Information.

Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

5.

ENGINE CONTROL MODULE (ECM)

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Starter Relay and
the Engine Control Module (ECM).

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 Engine Control Module (ECM) in accordance with the Service Information.

Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

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P0617-STARTER CONTROL CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W

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