b97 011 .pdf
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March 18, 1997
Thru 19UYA22 . . VL008536
MIL Stays On After Starting
The Malfunction Indicator Lamp (MIL) stays on after
starting the engine, and the PGM Tester shows SAE
codes P1768 and P1773 (the MIL flashes DTCs 16
and 23 if you use the SCS service connector) in the
If both DTCs are indicated, go to CORRECTIVE
If the MIL is on, but you cannot read the DTCs
with the PGM Tester, go to DIAGNOSIS to
confirm the symptom.
3. Remove the ECM cover mounting nuts, then turn
the cover over.
NOTE: When the initial malfunction occurs, the MIL
stays on and the D4 light flashes. The D4 light will
not flash again during the next driving cycle unless
the malfunction occurs again.
4. Remove the TCM by disconnecting the two
connectors and removing the three mounting bolts.
Electrical spikes from the ignition switch affect the TCM.
1. Connect the PGM Tester, and display the DTCs in
the A/T Menu. If it displays “No Communication,”
connect the red 16/16 DLC adapter to the 16/14
pin OBD II Type 3 adapter (see SPECIAL
TOOLS REQUIRED). This adapter must be used
on vehicles thru VIN 19UYA22...VL006829.
2. If the PGM Tester displays “No A/T DTCs,” select
Generic OBD II mode to retrieve the SAE codes.
3. If both SAE codes P1768 and P1773 are
indicated, go to CORRECTIVE ACTION. If only
one code is present, disregard this bulletin and
follow the troubleshooting procedures in section
14 of the service manual.
5. Install the new TCM in the reverse order of
removal, and reinstall all removed parts.
Replace the Transmission Control Module (TCM).
6. Record the customer’s radio station presets, and
the radio anti-theft code.
1. Remove the right door sill molding.
7. Pull the BACK-UP (10 A) fuse from the under-hood
fuse box for 10 seconds to reset the ECM and TCM.
2. Pull the passenger’s floor carpet back to expose
the ECM cover.
8. Enter the radio anti-theft code, and the radio
station presets. Reset the clock.
1997 American Honda Motor Co., Inc. – All Rights Reserved
BTB 18658 (9703)
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CUSTOMER INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment,
and training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not
assume this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact
an authorized Acura automobile dealer.
Transmission Control Module: P/N 28100-P8A-003
SPECIAL TOOLS REQUIRED
16/16 Pin DLC Adapter (red): T/N P25132
16/14 Pin OBD II Type 3 Adapter: T/N 02001969
NOTE: Adapters can be ordered by calling Special
Tools at 1-800-346-6327.
WARRANTY CLAIM INFORMATION
In warranty: The normal warranty applies.
Flat rate time:
Out of warranty: Any repair performed after
warranty expiration may be eligible for goodwill
consideration by the District Technical Manager or
your Zone Office. You must request consideration,
and get a decision, before starting work.
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