Dodge Ram Truck 1500-2500-3500. Manual — part 1272

P1696-PCM FAILURE EEPROM WRITE DENIED

For the Engine circuit diagram. (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS).

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Ignition on and battery voltage greater than 10 volts.

•

Set Condition:
An attempt to program/write to the internal EEPROM failed, also checks at powerdown.

Possible Causes

SRI MILEAGE INVALID

PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)

Diagnostic Test

1.

SCAN TOOL DISPLAYS WRITE FAILURE

Ignition on, engine not running.

With the scan tool, perform the SRI Memory Test.

Does the scan tool display Write Failure?

Yes

>> Replace and program the Powertrain Control Module per Service Information.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

No

>> Go To 2

2.

SCAN TOOL DISPLAYS WRITE REFUSED

With the scan tool, perform the SRI Memory Test.

Does the scan tool display Write Refused?

Yes

>> Go To 3

No

>> Go To 4

3.

PCM REFUSED 2ND TEST

With the scan tool, perform the SRI Memory Test a second time.

NOTE: Retest the SRI Memory two more times.

Does the scan tool display Write Refused again?

Yes

>> Replace and program the Powertrain Control Module per Service Information.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

No

>> Test Complete.

9 - 2010

ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10

DR/DH

P1696-PCM FAILURE EEPROM WRITE DENIED (CONTINUED)

4.

SCAN TOOL DISPLAYS SRI MILEAGE INVALID

With the scan tool, perform the SRI Memory Test.

Does the scan tool display SRI Mileage Invalid?

Yes

>> Update the mileage and retest the SRI Memory.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

No

>> Go To 5

5.

COMPARE SRI MILEAGE WITH ODOMETER

Compare the SRI Mileage stored with the Instrument Panel Odometer.

Is the mileage within the specified range displayed on the scan tool?

Yes

>> Test Complete.

No

>> Update the mileage and retest the SRI Memory.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

DR/DH

ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10

9 - 2011

*BRAKE SWITCH SENSE STATUS DOES NOT CHANGE ON THE SCAN TOOL

9 - 2012

ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10

DR/DH

*BRAKE SWITCH SENSE STATUS DOES NOT CHANGE ON THE SCAN TOOL (CONTINUED)

For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS).

For a complete wiring diagram Refer to Section 8W.

Possible Causes

(A103) FUSED B+ CIRCUIT

(Z429) BRAKE LAMP SWITCH GROUND CIRCUIT OPEN

BRAKE LAMP SWITCH

(B29) BRAKE SWITCH NO.1 SIGNAL CIRCUIT OPEN

(B29) BRAKE SWITCH NO.1 SIGNAL CIRCUIT SHORT TO GROUND

PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)

Diagnostic Test

1.

SCAN TOOL DOES NOT SHOW BRAKE SW PRESSED OR RELEASED

Ignition on, engine not running.

With the scan tool in Inputs/Outputs, read the Brake Switch state.

While observing the scan tool display, press and release the brake pedal several times.

Does the scan tool display Brake Switch PRESSED and RELEASED?

Yes

>> The Brake Lamp Switch is operating properly at this time.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

No

>> Go To 2

2.

(A103) FUSED B+ CIRCUIT OPEN

Turn the ignition off.

Disconnect the Brake Lamp Switch harness connector.

Using a 12-volt test light connected to ground, probe the (A103) Fused
B+ circuit at the Brake Lamp Switch harness connector.

Does the test light illuminate brightly?

Yes

>> Go To 3

No

>> Repair the open or short to ground in the (A103) Fused

B+ circuit. Check and replace fuses as necessary.

Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)

DR/DH

ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10

9 - 2013