Code No.B16A5
Turn-signal Lamp (RH) Short Circuit
DIAGNOSTIC FUNCTION
When the right wiring harness of turn-signal lamp is short circuited, the ETACS-ECU sets
the diagnosis code No. B16A5.
JUDGMENT CRITERIA
With the diagnosis code not set, when the short circuit is detected three times consecutively,
the ETACS-ECU sets the diagnosis code No. B16A5.
PROBABLE CAUSES
- Damaged harness wires and connectors
- Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Connector check: A-54 headlamp assembly (RH) connector,
A-01 side turn-signal lamp (RH) connector and D-10 rear combination lamp (RH) connector
Q.
Is the check result normal?
Go to Step 2.
NO : Repair the defective connector.
STEP 2. Resistance measurement at the A-54 headlamp assembly (RH)
connector, A-01 side turn-signal lamp (RH) connector and D-10 rear combination lamp (RH) connector
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(1)Disconnect the connector, and measure at the wiring harness side.
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(2)Measure the resistance between the connector terminal of lamp which does not illuminate
and the body earth.
- Measure the resistance between the A-54 headlamp assembly (RH) connector
terminal No. 8 and the body earth.
- Measure the resistance between the A-01 side turn-signal lamp (RH) connector terminal No.
1 and the body earth.
- Measure the resistance between the D-10 rear combination lamp (RH) connector terminal
No. 4 and the body earth.
OK: Continuity exists (2 Ω
or less)
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Q.
Is the check result normal?
Go to Step 4.
Go to Step 3.
STEP 3. Check the wiring harness between A-54 headlamp assembly (RH)
connector terminal No. 8, A-01 side turn-signal lamp (RH) connector terminal No. 1, D-10 rear
combination lamp (RH) connector terminal No. 4 and the body earth.
- Check the earth wires for open circuit.
Q.
Is the check result normal?
Go to Step 6.
Repair the wiring harness.
STEP 4. Connector check: C-304 and C-311 ETACS-ECU connectors
Q.
Is the check result normal?
Go to Step 5.
Repair the defective connector.
STEP 5. Check the wiring harness between A-54 headlamp assembly (RH)
connector terminal No. 5, A-01 side turn-signal lamp (RH) connector terminal No. 2, D-10 rear
combination lamp (RH) connector terminal No. 3 and C-304 ETACS-ECU connector terminal No. 16
or C-311 ETACS-ECU connector terminal No. 19.
- Check the output lines for open circuit.
Q.
Is the check result normal?
Go to Step 6.
Repair the wiring harness.
STEP 6. Check whether the diagnosis code is reset.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
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(3)Check if diagnosis code is set.
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Q.
Is the diagnosis code set?
Replace the ETACS-ECU.
The diagnosis is complete.