Dodge Durango (HB). Manual - part 1238

P0218-HIGH TEMPERATURE OPERATION ACTIVATED

For the Transmission circuit diagram. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE -
SCHEMATICS AND DIAGRAMS).

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Whenever the engine is running.

•

Set Condition:
Immediately after a Overheat shift schedule is activated when the Transmission temperature exceeds 127° C
or 260° F.

Possible Causes

HIGH TEMPERATURE OPERATION ACTIVATED

TORQUE CONVERTER CLUTCH SLIPPING / NOT ACTIVATING

EXCESSIVE TIME IDLING IN GEAR

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - SCHEMATICS AND DIAGRAMS).

Theory of Operation

The DTC is intended as an informational DTC to aid the technician in determining the root cause of a customer
dirveability issue. The DTC is also intended to alert the technicain to determine if a cooling system malfunction has
occurred or if an additional transmission air to oil cooler is needed to support the customers driving behavior.

Diagnostic Test

HIGH TEMPERATURE OPERATION

This DTC is an informational DTC designed to aid the Technician in diagnosing shift quality complaints.

This DTC indicates that the transmission has been operating in the

Overheat

shift schedule which may generate

a customer complaint.

The customer driving patterns may indicate the need for an additional transmission oil cooler.

Verify proper Engine cooling system operation which would affect proper transmission operation.

Verify proper torque converter clutch operation.

With the scan tool, check the DTC EVENT DATA to help identify the conditions in which the DTC was set.

If there are no possible causes remaining, view repair.

Repair

Repair the cause of transmission overheating. Refer to the Service Information for the proper repair
procedure. Make sure to check for any Service Bulletins pertaining to this problem.

Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.

AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS

21 - 357

P0562-BATTERY VOLTAGE LOW

21 - 358

AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS

P0562-BATTERY VOLTAGE LOW (CONTINUED)

For the Transmission circuit diagram. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE -
SCHEMATICS AND DIAGRAMS).

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With the engine running and the PCM has closed the Transmission Control Relay.

•

Set Condition:
If the battery voltage of the Transmission Control Relay Output Sense circuit(s) to the PCM is less than 10.0
volts for the period of 15 seconds. Note: P0562 generally indicates a gradually falling battery voltage or a
resistive connection(s) to the PCM. The DTC will also set if the battery voltage sensed at the PCM is less than
6.5-volts for 200ms or where Transmission Control Relay Output circuits are less than 7.2-volts for 200ms.

Possible Causes

RELATED CHARGING SYSTEM DTC’S

(Z908, Z977) GROUND CIRCUIT OPEN OR HIGH RESISTANCE

(A104) FUSED B+ CIRCUIT TO PCM OPEN OR HIGH RESISTANCE

(T16) TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE

TRANSMISSION CONTROL RELAY

POWERTRAIN CONTROL MODULE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - DIAGNOSIS AND TESTING).

Theory of Operation

Friction element distress could result from an insufficient supply voltage to properly control the solenoids. To prevent
this possibility, the battery voltage is monitored and the system is placed in logical limp-in if the battery voltage
drops below the limit.

Diagnostic Test

RELATED CHARGING SYSTEM DTC’S

With the scan tool, read the Engine DTC’s.

Are there any related Charging System DTC’s also present?

Yes

>> Refer to the Charging System category and repair any Engine Charging System DTC’s, before testing

DTC P0562. NOTE: After repairing the Engine Charging System DTC’s, perform the Transmission Ver-
ification test to verify the transmission was not damaged.

Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.

>> Go To 2

AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS

21 - 359

P0562-BATTERY VOLTAGE LOW (CONTINUED)

CONDITION P0562 PRESENT

NOTE: Generator, battery, and charging system must be fully functional before performing this test.
With the scan tool, read Transmission DTC’s.

With the scan tool, Check the STARTS SINCE SET counter for P0562.

NOTE: This counter only applies to the last DTC set.

Is the STARTS SINCE SET counter set at 0?

Yes

>> Go To 3

>> Go To 7

CHECKING (Z908, Z977) GROUND CIRCUITS

Turn the ignition off to the lock position.

Disconnect the PCM C4 harness connector and connect Miller tool
#8815.

NOTE: Check connectors - Clean/repair as necessary.

CAUTION: Do not probe the PCM harness connectors. Probing
the PCM harness connectors will damage the PCM terminals
resulting in poor terminal to pin connection. Install Miller tool
#8815 to perform diagnosis.
Using a 12-volt test light connected to 12-volts, check the PCM (Z908,
Z977) Ground circuits at the appropriate terminals of Miller tool #8815.

NOTE: The test light must illuminate brightly. Compare the bright-
ness to that of a direct connection to the battery.

Does the test light illuminate brightly for the PCM (Z908, Z977)
Ground circuits?

Yes

>> Go To 4

>> Repair the (Z908, Z977) Ground circuit(s) for an open or high resistance.

Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.

CHECKING (A104) FUSED B+ CIRCUIT

Remove the Transmission Control Relay.

Ignition on, engine not running.

Using a 12-volt test light connected to ground, check the (A104) Fused
B+ circuit at the Transmission Control Relay connector.

Does the test light illuminate brightly?

Yes

>> Go To 5

>> Repair the (A104) Fused B+ circuit for an open or high

resistance.

Perform 45RFE/545RFE TRANSMISSION VERIFICATION
TEST - VER 1.

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AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS

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