Section 07-01A: Transmission, Automatic, E4OD
1996 All F-Series and Bronco with E4OD Automatic Transmission Workshop Manual
DIAGNOSIS AND TESTING

On-Board Diagnostics with NGS

NOTE: New Generation Star (NGS) Tester or equivalent must be used on EEC-V equipped vehicles in order to properly retrieve four-digit DTCs.

The Quick Tests are in the Powertrain Control/Emissions Diagnosis Manual (PC/ED). These tests can be used to diagnose the powertrain control module (PCM) (12A650), sensor and actuators of the E4OD transmission.

The following is a guide for using the On-Board Diagnostic (OBD) Quick Tests and the New Generation Star (NGS) Tester, with some special considerations to remember:

NOTE: For detailed instructions and other diagnostic methods using the NGS, refer to the Powertrain Control/Emissions Diagnosis Manual OBDI or OBDII NGS instruction guide.

NOTE: If using a generic scan tool, refer to the Powertrain Control/Emissions Diagnosis Manual OBDI or OBDII for instructions on performing OBD procedures.

 

Quick Test 1.0 Visual Inspection

Perform the Visual Check and Vehicle Preparation procedures as outlined in the Powertrain Control/Emissions Diagnosis Manual OBDI or OBDII.

Inspect the following:

NOTE: Perform all necessary service before continuing with Quick Tests.

 

Quick Test 2.0 Set-Up

Connect Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to data link connector (refer to vehicle owner manual for location).

The following are procedures to run OBDII procedures.

Vehicle and Tester Preparation

Prepare the vehicle as follows:

Prepare the NGS as follows:



 

Quick Test 3.0 Key On, Engine OFF (KOEO)

 CAUTION: Do not replace parts based on a code, perform Pinpoint Tests first.

Some special considerations for Key On, Engine Off Quick Test include the following:

Performing KOEO

 

Quick Test 4.0 Continuous Memory Codes

Continuous DTCs are concerns that were detected during normal vehicle operation. These codes are retained for 40 warm-up cycles.

Some special considerations for continuous DTC testing include the following:

Performing Continuous DTC Tests

 

Quick Test 5.0 Key On, Engine Running (KOER)

The Engine Running Quick Test provides hard DTCs only.

Some special considerations for KOER Quick Test include the following:

Performing KOER

 

Special Test Modes

 

Output Test Mode

The Output Test Mode (OTM) aids is servicing output actuators associated with the PCM system. It allows the technician to energize and de-energize most of the system output actuators on command.

Performing Output Test Mode (OTM)

NOTE: You must enter OTM with ignition key ON and the engine OFF.

 

PCM Reset Mode (Clearing DTCs) (EEC-V Only)

The PCM RESET Mode provides a means for the NGS to command the PCM to clear all DTCs. When resetting the PCM, a DTC No. P1000 will be set in the PCM until all OBDII Systems or components have been monitored during the OBDII Drive Cycle. The following list is what happens when a PCM reset is performed.

Performing PCM RESET:

 

Clearing DTC No. P1000

Readiness for Inspection/Maintenance Testing

In some localities it may become a legal requirement to pass an Inspection/Maintenance (I/M) test of the OBDII System. If the vehicle powertrain system or its battery has just been serviced, the OBDII system is reset to a not ready for I/M testing condition. To prepare the vehicle for this test and to clear the DTC No. P1000 the OBDII Drive Cycle must be performed.

 

OBDII Drive Cycle

The following steps MUST BE RUN IN THE ORDER SHOWN. If steps 2, 3, or 4 are interrupted, repeat the step before proceeding. Any safe driving mode is acceptable between steps.

  1. NOTE: Always drive vehicle in a safe manner according to traffic conditions and obey all traffic laws.

    Start engine and drive vehicle in typical city stop and go traffic for at least 10 minutes after it has reached normal operating temperature.

  1. Idle vehicle for at least 45 seconds, then accelerate at part throttle to near 72 km/h (45 mph).

  1. Then drive to accumulate at least 4 minutes in the range of 48-72 km/h (30 to 45 mph). If stop and go conditions occur, the designated accumulative time must be within the 32-72 km/h (20 to 45 mph) range. No wide-open throttle (WOT) conditions should be encountered.

  1. Cruise and maintain a select speed in the range of 48-64 km/h (30 to 40 mph) on a level road with throttle held steady for at least one (1) minute.

  1. Decelerate and idle for at least one minute.

  1. Accelerate to 89 km/h (55 mph) at 1/2 throttle (elapsed time is about 10 seconds).

  1. Cruise and maintain select speed in the range of 64-105 km/h (40 to 65 mph) on a level road with throttle held steady for at least 1 minute and 20 seconds.

  1. Bring vehicle down to idle.

  1. While the ignition key is on (vehicle at idle), check for continuous memory DTCs.

  1. If system PASS, OBDII Drive Cycle is complete. If DTC P1000 is received, check monitor completion status (On-Board Readiness Menu), and repeat the drive cycle.

Other NGS Features

For further information on other diagnostic testing features using the NGS or generic scan tool, refer to the Powertrain Control/Emissions Diagnosis Manual OBDI or OBDII. Other diagnostic methods include the following:

 

Transmission Drive Cycle Test

 

After performing the Quick Test, use the following Transmission Drive Cycle Test for checking E4OD continuous codes:

  1. NOTE: The Transmission Drive Cycle Test must be followed exactly. Malfunctions have to occur four times consecutively for codes 617, 618, 619, P0781, P0782, and P0783 to be set, and five times consecutively for continuous codes 628, 629, P1728, P1744, P0741, P0743.

    NOTE: When performing the Transmission Drive Cycle Test, refer to Shift Solenoid Operation Chart under Transmission Electronic Control System in the Description and Operation portion of this section for proper solenoid operation.

    Record and then erase Quick Test codes.

  1. Warm engine to normal operating temperature.

  1. Make sure transmission fluid level is correct.

  1. With transmission in OVERDRIVE, moderately accelerate from stop to 80 km/h (50 mph). This allows the transmission to shift into 4th gear. Hold speed and throttle open steady for a minimum of 15 seconds.

  1. With transmission in OVERDRIVE, press transmission control switch (TCIL should illuminate) and moderately accelerate from stop to 64 km/h (40 mph). This allows transmission to shift into 3rd gear. Hold speed and throttle opening steady for a minimum of 15 seconds (30 seconds above 4000 ft.).

  1. Press TCS (TCIL should turn off) and accelerate from 64 km/h (40 mph) to 80 km/h (50 mph). This allows transmission to shift into 4th gear. Hold speed and throttle position steady for a minimum of 15 seconds.

  1. With transmission in 4th gear and maintaining steady speed and throttle opening, lightly apply and release brake pedal (2455) (to operate stoplamps). Then hold speed and throttle steady for an additional 5 seconds (minimum).

  1. Brake to a stop and remain stopped for a minimum of 20 seconds.

  1. Repeat Steps 4 through 8 at least five times.

  1. Perform Quick Test and record continuous codes.