Dodge Ram Truck 1500-2500-3500. Manual — part 371

BTSI OUTPUT CIRCUIT SHORTED OR OPEN (CONTINUED)

For the Instrument Cluster circuit diagram (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER - SCHEMATICS
AND DIAGRAMS).

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With the ignition in the Unlock or On position and the operator’s foot applied to the brake pedal. (Customer
Complaint: Vehicle can be shifted out of Park without pressing the brake pedal.)

•

Set Condition:
The Instrument Cluster detects a

9

0

9

or low value on the input circuit for the BTSI when ON.

Possible Causes

(Z101) BTSI SOLENOID GROUND CIRCUIT OPEN

(K32) BTSI SOLENOID CONTROL CIRCUIT SHORTED TO THE (Z101) BTSI SOLENOID GROUND CIRCUIT

(K32) BTSI SOLENOID CONTROL CIRCUIT SHORT TO GROUND

(K32) BTSI SOLENOID CONTROL CIRCUIT OPEN

BTSI SOLENOID

INSTRUMENT CLUSTER

Diagnostic Test

1.

TCM DTC PRESENT

Turn the ignition on.

With the DRBIII

T

, read DTCs.

Does the DRBIII

T

display any TCM DTCs?

Yes

>> Refer to Transmission for the related symptom(s).

Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1.)

No

>> Go To 2

2.

CHECK THE (Z101) BTSI SOLENOID GROUND CIRCUIT FOR AN OPEN

Turn the ignition off.

Disconnect the BTSI Solenoid harness connector.

Measure the resistance between ground and the (Z101) BTSI Solenoid
Ground circuit.

Is the resistance above 5.0 ohms?

Yes

>> Repair the (Z101) BTSI Solenoid Ground circuit for an

open.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

No

>> Go To 3

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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS

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BTSI OUTPUT CIRCUIT SHORTED OR OPEN (CONTINUED)

3.

CHECK THE (K32) BTSI SOLENOID CONTROL CIRCUIT FOR A SHORT TO THE (Z101) BTSI SOLENOID
GROUND CIRCUIT

Disconnect the Instrument Cluster C1 harness connector.

Measure the resistance between the (K32) BTSI Solenoid Control cir-
cuit and the (Z101) BTSI Solenoid Ground circuit.

Is the resistance below 5.0 ohms?

Yes

>> Repair the (K32) BTSI Solenoid Control circuit for a short

to the (Z101) BTSI Solenoid Ground circuit.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

No

>> Go To 4

4.

CHECK THE (K32) BTSI SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between ground and the (K32) BTSI Solenoid
Control circuit.

Is the resistance below 5.0 ohms?

Yes

>> Repair the (K32) BTSI Solenoid Control circuit for a short

to ground.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

No

>> Go To 5

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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS

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BTSI OUTPUT CIRCUIT SHORTED OR OPEN (CONTINUED)

5.

CHECK THE (K32) BTSI SOLENOID CONTROL CIRCUIT FOR AN OPEN

Measure the resistance of the (K32) BTSI Solenoid Control circuit
between the Solenoid connector and the Instrument Cluster C1 con-
nector.

Is the resistance above 5.0 ohms?

Yes

>> Repair the (K32) BTSI Solenoid Control circuit for an

open.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

No

>> Go To 6

6.

BTSI SOLENOID

Reconnect the Instrument Cluster C1 harness connector.

Turn the ignition on.

With the DRBIII

T

, actuate the BTSI Solenoid.

Using a 12-volt test light connected to ground, check for voltage on
the (K32) BTSI Solenoid Control circuit.

Does the test light illuminate brightly?

Yes

>> Replace the BTSI Solenoid in accordance with the Service

Information.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

No

>> Replace and configure the Instrument Cluster in accor-

dance with the Service Information.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS

DR/DH

IGNITION RUN-START CIRCUIT RATIONALITY CHECK

For the Instrument Cluster circuit diagram (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER - SCHEMATICS
AND DIAGRAMS).

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Continuously.

•

Set Condition:
Ignition RUN/START Voltage below 5 volts while the RUN/ACC and UNLOCK voltage status is logic high.

Possible Causes

IGNITION RUN-START FUSE OPEN

(F21) IGNITION RUN-START CIRCUIT OPEN

INSTRUMENT CLUSTER

Diagnostic Test

1.

IGNITION RUN-START FUSE OPEN

Turn the ignition off.

Inspect the Ignition Run-Start fuse in the PDC.

Is the fuse open?

Yes

>> Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for a short to ground

condition.

Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1.)

No

>> Go To 2

2.

CHECK THE (F1) IGNITION RUN-START CIRCUIT FOR AN OPEN

Disconnect the Instrument Cluster C3 harness connector.

Turn the ignition on.

Measure the voltage of the (F21) Ignition Run-Start circuit.

Is the voltage above 5.0 volts?

Yes

>> Replace the Instrument Cluster in accordance with the ser-

vice information.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

No

>> Repair the (F21) Ignition Run-Start circuit for an open.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

DR/DH

INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS

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