Inspection Procedure

CHECK POWER DOOR LOCK SYSTEM

When the master switch assembly's door control switch is operated, check that the locked doors unlock.

Result

RESULT CHART

Result	Proceed to
Door locks operate normally	OK
Door locks do not operate normally	NG

NG: GO TO POWER DOOR LOCK CONTROL SYSTEM

OK: Go to next step

CHECK ELECTRICAL KEY TRANSMITTER

When another registered electrical key transmitter is used, check that the entry function operates normally.

Result

RESULT CHART

Result	Proceed to
Entry function operates normally	A
Entry function does not operate normally	B

B: Go to step 4

A: Go to next step

INSPECT TRANSMITTER BATTERY (VOLTAGE)

Remove the battery (lithium battery) from the transmitter (see REPLACEMENT ).

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

Standard voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
Battery positive (+) - Battery negative (-)	Always	2.1 to 3.2 V

NG: REPLACE TRANSMITTER BATTERY (See REPLACEMENT )

OK: REPLACE ELECTRICAL KEY TRANSMITTER

CHECK WAVE ENVIRONMENT

Bring the electrical key transmitter near the door control receiver, and perform a wireless operation check.

HINT:

When the electrical key transmitter is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

Result

RESULT CHART

Result	Proceed to
Operation check fails	A
Operation check is normal	B

HINT:

If the inspection result is that the problem only occurs in certain locations or times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

B: AFFECTED BY WAVE INTERFERENCE

A: Go to next step

INSPECT FUSE (P MPX-B)

Remove the P MPX-B fuse from the passenger side junction block.

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

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
P MPX-B fuse	Always	Below 1 Ω

NG: REPLACE FUSE

OK: Go to next step

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BATTERY)

Fig 1: Identifying L15 ECU Connector Terminals

Disconnect the L15 ECU connector.

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

Standard voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
L15-20 (CUTB) - Body ground	Always	11 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying R37 Receiver Connector And L15 ECU Connector Terminals

OK: Go to next step

CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - CERTIFICATION ECU AND BODY GROUND)

Disconnect the R37 receiver connector.
Disconnect the L15 ECU connector.

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

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
R37-2 (+5) - L15-29 (RCO)	Always	Below 1 Ω
R37-3 (DATA) - L15-38 (RDA)	Always	Below 1 Ω
R37-4 (ASEL) - L15-37 (ASEL)	Always	Below 1 Ω
R37-5 (RSSI) - L15-39 (RSSI)	Always	Below 1 Ω
R37-6 (GND) - Body ground	Always	Below 1 Ω
R37-2 (+5) - Body ground	Always	10 kΩ or higher
R37-3 (DATA) - Body ground	Always	10 kΩ or higher
R37-4 (ASEL) - Body ground	Always	10 kΩ or higher
R37-5 (RSSI) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK DOOR CONTROL RECEIVER (OPERATION)
1. Replace the door control receiver with a normal one (see REMOVAL ).
2. Check that it operates normally.
  OK: Operates normally
  
  NG: REPLACE CERTIFICATION ECU
  
  OK: END (DOOR CONTROL RECEIVER IS DEFECTIVE)