Shift Indicator - A/T: Testing and Inspection

CAUTION:
- GAll SRS electrical wiring harnesses are covered with yellow outer insulation.
- Before disconnecting the SRS wire harness, install the short connector on the airbag. Service Precautions
- Replace the entire effected SRS harness assembly if it has an open circuit or damaged wiring:

Remove the gauge assembly from the dashboard and disconnect the 7-P, 18-P and 22-P connectors from the gauge assembly. Make the following input tests at the connector terminals. If all tests prove OK, yet the indicator still fails to work, replace the main print panel, speedometer, tachometer and odo/trip meter.

NOTE: Several different wires have the same color. They have been given a number suffix to distinguish them (for example GRN1 and GRN2 are not the same).

When the A/T control unit senses an abnormality in the input or output systems, the D4 indicator light in the gauge assembly will blink. However, when the Service Check Connector (located to the lower right of the glove compartment) is connected with a jumper wire, the D4 indicator light will blink the problem code when the ignition switch is turned on.

When the D4 indicator light has been reported on, connect the two terminals of the Service Check Connector together. The turn on the ignition switch and observe either the D4 indicator light. Problem codes 1 through 9 are indicated by individual short blinks, Problem codes 10 through 15 are indicated by a series of long and short blinks. One long blink equals 10 short blinks. Add the long and short blinks together to determine the problem code. After determining the problem code, refer to the electrical system Symptom-to-Component Chart below.

Some PGM-FI problems will also make the D4 indicator light come on. After repairing the PGM-FI system, disconnect the Back Up fuse (7.5 A) in the under-hood fuse/relay box for more than 10 seconds to reset the A/T control unit memory.

NOTE: Disconnecting the Back up fuse also cancels the radio preset stations and the clock setting. Make note of the radio presets before removing the fuse so you can reset them.

NOTE: Only the A and D sections of the Test Harness are used for A/T troubleshooting. Unless otherwise noted, use only the Digital Multimeter, KS-AHM32-003, for testing.

If a customer describes the symptoms for codes 3, 6, or 11, yet the D4 indicator light is not blinking, it will be necessary to recreate the symptom by test driving, and then checking the D4 indicator light with the ignition still ON.
If the D4 indicator light displays codes other than those listed above or stays lit continuously, the control unit is faulty.
Sometimes the D4 indicator light and the Check Engine light may come on simultaneously. If so, check the PGM-FI system according to the number of blinks on the PGM-FI ECU self-diagnosing indicator, then reset the memory by removing the Back-Up fuse in the under hood fuse/relay box for more than 10 seconds. Drive the vehicle for several minutes at speed over 30 mph 150 km/h), then recheck the lights.

NOTE: Disconnecting the Back up fuse also cancels the radio preset stations and the clock setting. Make note of the radio presets before removing the fuse so you can reset them.