Turn ignition on. Check for battery voltage at ECM power terminals. See ECM POWER TERMINAL IDENTIFICATION table. If battery voltage is not present, check operation of engine control relay. See appropriate ECM CONTROL RELAY under RELAYS .

ECM POWER TERMINAL IDENTIFICATION

Application

⁽¹⁾ ECM Connector Terminals No. (Wire Color)

Accent

⁽²⁾ 12 (ORG/BLK), ⁽³⁾ 13 (ORG), ⁽⁴⁾ 44 (PNK/BLK), ⁽⁴⁾ 45 (PNK/BLK) & ⁽⁴⁾ 63 (PNK/BLK)

Elantra

⁽²⁾ 3 (BLU/BLK), ⁽⁴⁾ 14 (WHT), ⁽⁴⁾ 21 (WHT) & ⁽³⁾ 22 (RED)

Santa Fe

(2.4L)

C21-2 (A/T)

⁽⁴⁾ 7 (BLU) & ⁽²⁾ 26 (GRN/ORG)

C21-3 (A/T)

⁽³⁾ 28 (RED)

C22-1 (M/T)

⁽⁴⁾ 25 (BLU)

C22-4 (M/T)

⁽²⁾ 10 (PNK) & ⁽³⁾ 12 (RED)

(2.7L)

C23-1

⁽³⁾ 1 (RED), ⁽²⁾ 7 (YEL/ORG), ⁽⁴⁾ 8 (YEL) & ⁽⁴⁾ 9 (RED)

Sonata

2.4L

C44-2 (A/T)

⁽⁴⁾ 1 (PNK) & ⁽⁴⁾ 7 (PNK)

C44-2 (A/T)

⁽²⁾ 26 (ORG)

C45-1 (M/T)

⁽⁴⁾ 12 (PNK) & ⁽⁴⁾ 25 (PNK)

C45-4 (M/T)

⁽²⁾ 10 (ORG) & ⁽³⁾ 12 (PNK)

2.7L

C94-1

⁽³⁾ 1 (PNK)

C94-1

⁽²⁾ 7 (ORG)

C94-1

⁽⁴⁾ 8 (PNK) & ⁽⁴⁾ 9 (PNK)

XG350 (3.5L)

C44-2

⁽⁴⁾ 1 (PNK), ⁽⁴⁾ 7 (PNK),⁽²⁾ 26 (ORG), ⁽³⁾ 28 (PNK)

⁽¹⁾	See Fig 1-Fig 8 .

⁽²⁾	Memory power.

⁽³⁾	Power from ignition in START or ON position.

⁽⁴⁾	Battery voltage from ECM control relay.

Fig 1: Identifying ECM Harness Connector (Accent & Elantra)

Courtesy of HYUNDAI MOTOR CO.

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.

Safety Warning

Power Circuits

Use the Manual With the Right Hardware

When to See a Mechanic

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