Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHONDA1993ACCORD L4-2156CC 2.2L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSRELAYS AND MODULES - TRANSMISSION AND DRIVETRAINRELAYS AND MODULES - A/TCONTROL MODULESERVICE AND REPAIR
1993 Honda Accord L4-2156cc 2.2L SOHC
Control Module: Service and Repair
1993 Honda Accord L4-2156cc 2.2L SOHCSECTION Service and Repair
CAUTION:
- All SRS electrical wiring harnesses are covered with yellow outer insulation.
- Before disconnecting the SRS wire harness, install the short connector(s) on the airbag(s).
- Replace the entire affected SRS harness assembly if it has an open circuit or damaged wiring.
If the inspection for a particular DTC requires the use of the Test Harness (O7LAJ -PT3010A): Connect the wire harness to the Test Harness, and/or connect the Test Harness to the TCM according to the troubleshooting flowchart.
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-AHM-32-003, for testing.
TCM RESET PROCEDURE
1. Turn the ignition switch off.
2. Remove the Back Up fuse (7.5 A) from the under-hood fuse/relay box for 10 seconds to reset the TCM. NOTE: Disconnecting the Back Up fuse also cancels the radio anti-theft code, preset stations and the clock setting. Get the customer's code number and make note of the radio presets before removing the fuse so you can reset them.
FINAL PROCEDURE
NOTE: This procedure must be done after any troubleshooting.
1. Remove the jumper wire from the Service Check Connector.
2. Reset the TCM.
3. Set the radio preset stations and clock setting.
- All SRS electrical wiring harnesses are covered with yellow outer insulation.
- Before disconnecting the SRS wire harness, install the short connector(s) on the airbag(s).
- Replace the entire affected SRS harness assembly if it has an open circuit or damaged wiring.
If the inspection for a particular DTC requires the use of the Test Harness (O7LAJ -PT3010A): Connect the wire harness to the Test Harness, and/or connect the Test Harness to the TCM according to the troubleshooting flowchart.
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-AHM-32-003, for testing.
TCM RESET PROCEDURE
1. Turn the ignition switch off.
2. Remove the Back Up fuse (7.5 A) from the under-hood fuse/relay box for 10 seconds to reset the TCM. NOTE: Disconnecting the Back Up fuse also cancels the radio anti-theft code, preset stations and the clock setting. Get the customer's code number and make note of the radio presets before removing the fuse so you can reset them.
FINAL PROCEDURE
NOTE: This procedure must be done after any troubleshooting.
1. Remove the jumper wire from the Service Check Connector.
2. Reset the TCM.
3. Set the radio preset stations and clock setting.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.