Resistance kQ

Prius Hybrid Battery Repair Guide

HINT:

After inspection, connect the connector and clear the DTC (See page DI-363).

6 Check for short circuit in harness and connector between pressure switch and brake ECU (See page IN-41).

7

Check hydro motor relay No. 1 and No. 2.

Continuity

C1253 Toyota Land Cruiser
Continuity

BE1840 R15257 R15258

(+)

F00044

PREPARATION:

Remove the hydro motor relay No. 1 and No. 2 from the engine room R/B No. 2.

CHECK:

Check continuity between each pair of terminal of motor relay. OK:

Terminals 3 and 4

Continuity (Reference value * )

Terminals 1 and 2

Open

* Reference value: Hydro motor relay No. 1 62 Q, Hydro motor relay No. 2 54 Q

CHECK:

(a) Apply battery positive voltage between terminals 3 and 4.

(b) Check continuity between terminals. OK:

Terminals 1 and 2

Continuity

8 Check for short circuit in harness and connector between hydro motor relay No. 1, No. 2 and brake ECU (See page IN-41).

Check and replace brake ECU.

9 Check for open or short circuit in harness and connector between hydraulic brake booster pump motor and hydraulic brake booster (See page IN-41).

Check hydraulic brake booster pump motor (See page BR-48).

Replace hydraulic brake booster pump motor.

Replace hydraulic brake booster.

DI29A-13

DTC

C1253/53

Hydro Motor Relay Circuit

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Do It Yourself Car Diagnosis

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Responses

  • Silke Fassbinder
    Where is in toyota hydraulic brake booster pump motors?
    9 years ago

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