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 MANUALSTOYOTA2010TACOMA BASE, 2D PICKUP, RWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 90 (SMART KEY SYSTEM (KEYLESS START) (DIAGNOSTICS - INTRODUCTION))SMART KEY SYSTEMDIAGNOSTIC TROUBLE CODE CHART (FROM 12/2010)DIAGNOSTIC TROUBLE CODE CHART
2010 Toyota Tacoma Base, 2D Pickup, RWD, Standard
Diagnostic Trouble Code Chart
2010 Toyota Tacoma Base, 2D Pickup, RWD, StandardSECTION Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- DTC CHECK
If a malfunction code is displayed during the DTC check, the suspected area listed for that code in the table below. For details of the code, refer to "See" below
SMART KEY SYSTEMDTC Code Detection Item Trouble Area See B2271 Ignition Hold Monitor Malfunction 1. Power source control ECU
2. AM2 fuse
3. Wire harnessRefer to DTC B2271: Ignition Hold Monitor Malfunction B2272 Ignition 1 Monitor Malfunction 1. Power source control ECU
2. IG1 relay
3. Wire harnessRefer to DTC B2272: Ignition 1 Monitor Malfunction B2273 Ignition 2 Monitor Malfunction 1. Power source control ECU
2. IG2 relay
3. Wire harnessRefer to DTC B2273: Ignition 2 Monitor Malfunction B2274 ACC Monitor Malfunction 1. Power source control ECU
2. ACC relay
3. Wire harnessRefer to DTC B2274: ACC Monitor Malfunction B2275 STSW Monitor Malfunction 1. Power source control ECU
2. ECM
3. Wire harnessRefer to DTC B2275: STSW Monitor Malfunction B2276 ACCR Signal Circuit Malfunction 1. Power source control ECU
2. ECM
3. Wire harnessRefer to DTC B2276: ACCR Signal Circuit Malfunction B2277 Detecting Vehicle Submersion Power source control ECU Refer to DTC B2277: Detecting Vehicle Submersion B2278 Engine Switch Circuit Malfunction 1. Power source control ECU
2. Engine switch
3. Wire harnessRefer to DTC B2278: Engine Switch Circuit Malfunction B2281 "P" Signal Malfunction 1. Power source control ECU
2. Shift lock control ECU
3. Wire harnessRefer to DTC B2281: "P" Signal Malfunction B2282 Vehicle Speed Signal Malfunction 1. Power source control ECU
2. Combination meter assembly
3. Wire harnessRefer to DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction B2283 Vehicle Speed Sensor Malfunction 1. Speed sensor
2. Power source control ECU
3. Combination meter assembly
4. Skid control ECU
5. Each ECU
6. Wire harnessRefer to DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction B2284 Brake Signal Malfunction 1. Power source control ECU
2. Stop light switch
3. Wire harnessRefer to DTC B2284: Brake Signal Malfunction B2285 Steering Lock Position Signal Circuit Malfunction 1. Power source control ECU
2. Steering lock actuator (steering lock ECU)
3. Wire harnessRefer to DTC B2285: Steering Lock Position Signal Circuit Malfunction; DTC B2288: Steering Lock Signal Circuit Malfunction B2286 Runnable Signal Malfunction 1. Power source control ECU
2. ECM
3. Wire harnessRefer to DTC B2286: Runnable Signal Malfunction B2287 LIN Communication Master Malfunction 1. Power source control ECU
2. Certification ECU
3. Wire harnessRefer to DTC B2287: LIN Communication Master Malfunction; DTC B2289: Key Collation Waiting Time Over B2288 Steering Lock Signal Circuit Malfunction 1. Power source control ECU
2. Steering lock actuator (steering lock ECU)
3. Wire harnessRefer to DTC B2285: Steering Lock Position Signal Circuit Malfunction; DTC B2288: Steering Lock Signal Circuit Malfunction B2289 Key Collation Waiting Time Over 1. Power source control ECU
2. Certification ECU
3. Wire harnessRefer to DTC B2287: LIN Communication Master Malfunction; DTC B2289: Key Collation Waiting Time Over
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.