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
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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 |
Battery voltage applied to terminal 1 and 2 |
Below 1 Ω |
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.
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / (desired system) / DTC.
(e) Read the DTCs.
2. CLEAR DTC
(a) Connect ...
Compressor Lock Sensor Circuit (B1422)
SYSTEM DESCRIPTION
The ECM sends the engine speed signal to the air conditioning amplifier assembly
via CAN communication.
The air conditioning amplifier assembly reads the difference between compressor
speed and engine speed. When the difference becomes ...