Toyota 4Runner: Relay(w/ Ptc Heater)

Toyota 4Runner Service Manual / Vehicle Interior / Heating / Air Conditioning / Relay(w/ Ptc Heater)

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. REMOVE PTC HEATER RELAY (PTC NO. 1, PTC NO. 1, PTC NO. 3)

(a) Remove the 3 PTC heater relays from the engine room relay block.

Text in Illustration

*1	PTC No. 1 Relay
*2	PTC No. 2 Relay
*3	PTC No. 3 Relay

2. INSPECT PTC HEATER RELAY (PTC NO. 1, PTC NO. 2, PTC NO. 3)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
3 - 5	Battery voltage not applied between terminals 1 and 2	10 kΩ or higher
3 - 5	Battery voltage applied to terminal 1 and 2	Below 1 Ω

If the result is not as specified, replace the relay.

3. INSTALL PTC HEATER RELAY (PTC NO. 1, PTC NO. 2, PTC NO. 3)

(a) Install the 3 PTC heater relays to the engine room relay block.

Relay(for Magnet Clutch Control)

On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. REMOVE MAGNET CLUTCH RELAY (a) Remove the magnet clutch relay from the engine room relay block. Text in Illustration ...

Room Temperature Sensor

Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable, some systems need to be initialized ...

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Precaution
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