Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

Check parking brake switch circuit (See INSPECTION ).
1. NG: Repair or replace parking brake switch circuit.
2. OK: Go to next step.
Check brake fluid level warning switch circuit (See INSPECTION ).
1. NG: Repair or replace brake fluid level warning switch circuit.
2. OK: Go to next step.
Is DTC output for ABS?
1. YES: Repair circuit indicated by the output code.
2. NO: Go to next step.
Do the warning lights other than BRAKE warning light come on?
1. YES: Go to step 6 .
2. NO: Go to next step.

Check IG1 No. 1 relay.

PREPARATION:

Remove the IG1 No. 1 relay from the engine room J/B.

CHECK:

Check continuity between the IG1 No. 1 relay terminals listed in TERMINALS NO AND CONTINUITY .

OK:

TERMINALS NO AND CONTINUITY

Terminals 3 and 4	Continuity
Terminals 1 and 2	Open

CHECK:

Apply battery positive voltage between terminals 3 and 4.
Check continuity between terminals.
OK:
TERMINALS NO AND CONTINUITY

Terminals 1 and 2 Continuity

Fig 1: Checking Continuity Between IG1 No. 1 Relay Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Replace IG1 No. 1 relay.
OK: Check for open circuit in harness and connector between IG1 No. 1 relay and combination meter (See HOW TO USE THE DIAGNOSTIC TABLE AND INSPECTION ).

Check that the ECU connectors are securely connected to the ECU.
1. NO: Connect the connector to the ECU.
2. YES: Go to next step.
Check BRAKE warning light.
Check if that the open circuit in the combination meter circuit (See CIRCUIT ).
1. NG: Repair brake warning light bulb or combination meter assembly.
2. OK: Go to next step.
Check for short circuit in harness and connector between brake warning light and skid control ECU (See HOW TO USE THE DIAGNOSTIC TABLE AND INSPECTION ).
1. NG: Repair or replace harness or connector.
2. OK: Check and repair skid control ECU.