Diagnosis Item 11: Diagnose the lines between the joint connectors (CAN1 and CAN2)


caution When servicing a CAN bus line, earth yourself by touching a metal object such as an unpainted water pipe. If you fail to do, a component connected to the CAN bus line may be broken.








TROUBLE JUDGEMENT



COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSE



DIAGNOSIS PROCEDURE

STEP 1. Connector check: B-24 joint connector (CAN1) and C-103 joint connector (CAN2)
caution The strand end of the twist wire should be within 10 cm from the connector. For details refer to .

When checking the joint connector, ensure that its wiring harness side and its short pins are not damaged.

Q. Is the check result normal?

Go to Step 2

Repair the defective connector. Replace the joint connector as necessary.

STEP 2. Resistance measurement at B-24 joint connector (CAN1) and C-103 joint connector (CAN2).
caution A digital multimeter should be used. For details refer to .
caution The test wiring harness should be used. For details refer to .
(1)Disconnect the joint connector (CAN1) and the joint connector (CAN2), and measure at the wiring harness side.
(2)Turn the electric motor switch to the LOCK (OFF) position.
(3)
caution When measuring the resistance, disconnect the negative auxiliary battery terminal. For details refer to .
Ensure that the negative auxiliary battery terminal is disconnected.

(4)Continuity between B-24 joint connector (CAN1) terminal No.11 and C-103 joint connector (CAN2) terminal No.11
OK: Continuity (2 Ω or less)

(5)Continuity between B-24 joint connector (CAN1) terminal No.22 and C-103 joint connector (CAN2) terminal No.22
OK: Continuity (2 Ω or less)
caution Strictly observe the specified wiring harness repair procedure. For details refer to .

Q. Is the check result normal?

<All the resistances measure 2 Ω or less> Follow diagnosis item 5, 6, 7, 8, 9, 10, 11, 13, 14, 15 and 16. Refer to .

<Either or all of the resistances measure more than 2 Ω> Repair the wiring harness between the joint connector (CAN1) and the joint connector (CAN2).