NO.3 ADVANCED KEYLESS ENTRY FUNCTION INOPERATIVE[ADVANCED KEYLESS SYSTEM]

id0903d1801400

3

Advanced keyless entry function inoperative

POSSIBLE CAUSE

•  Malfunction in the transmitter (card key).

•  Malfunction in the keyless control module.

•  Malfunction in the keyless receiver.

•  Malfunction in the keyless antenna.

•  Malfunction in the PJB.

•  Wrong usage.

Diagnostic procedure

STEP	INSPECTION		ACTION
1	• Retrieve the advanced keyless system DTC using the M-MDS. • Are there DTC displayed?	Yes	Perform the applicable DTC diagnostic procedures.
1		No	Go to the next step.
2	• Did the customer attempt to operate each front doors and liftgate using the request switch?	Yes	Go to the next step.
2		No	Inspect the advanced keyless system operations using the request switch. If the advanced keyless system is inoperative, then go to the next step.
3	• Prepare the followings: ― Make sure that there is no transmitter (card key) inside the passenger compartment. ― Close all doors including liftgate. ― Remove the key from the steering lock. ― Make sure that start knob is to the LOCK position. (Do not Press the knob) ― Make sure that the transmitter (card key) is within the advanced keyless system operative area (within 80 cm {2.6 ft} from front door) • Does the advanced keyless system operate properly?	Yes	The system is normal. Explain the advanced keyless system operation.
3		No	Go to the next step.
4	• Replace with a transmitter (card key) battery known to be good. • Operate the transmitter (card key). • Does the keyless entry system operate properly?	Yes	Replace the transmitter (card key). Then go to the next step.
4		No	Go to the next step.
5	• Measure the voltage at the keyless control module terminals 3I, 3K and 3M while operating the request switch. ― Operate driver’s side front door request switch (3I): 5.0 V→1.0 V or less ― Operate passenger’s side front door request switch (3K): 5.0 V→1.0 V or less ― Operate trunk lid (4SD), liftgate (5HB) request switch (3M): 5.0 V→1.0 V or less • Is the voltage as above?	Yes	Go to the next step.
5		No	Inspect and repair the applicable wiring harness as necessary, then go to the next step.
6	• Turn the start knob to LOCK position with mechanical key is not in ignition switch, and the start knob is not pushed. • Measure the voltage following keyless control module connector. ― Terminal 3F (key reminder switch): below 1.0 V ― Terminal 3E (start knob (push switch)): below 1.0 V ― Terminal 2E (ACC voltage): below 1.0 V ― Terminal 2C (IG1 voltage): below 1.0 V • Is the signal voltage normal?	Yes	Go to the next step.
6		No	Inspect and repair for open or short circuit in wiring between the suspect switch and keyless control module, then go to the next step.
7	• Measure the pulse profile using an oscilloscope at following keyless control module terminal (52-pin). ― Terminal 1A for exterior, right front keyless antenna ― Terminal 1C for exterior, left front keyless antenna ― Terminal 1E for exterior, rear keyless antenna ― Terminal 1I for interior, rear interior keyless antenna ― Terminal 1M for interior, front interior keyless antenna ― Terminal 1O for interior, instrument panel keyless antenna • Compare the pulse signal generating frequency between card key in communication areas and out of it. • Is the pulse signal generating frequency at card key in communication areas become longer than out of it? Note • The pulse signal generating frequency at card key in communication areas twice as longer than out of it.	Yes	Go to the next step.
7		No	• Inspect for open or short circuit between suspect keyless antenna and keyless control module. ― If the wiring harness normal, replace suspect keyless antenna, then go to the next step. ― If the wiring harness is not normal, repair or replace for open or short circuit, then go to the next step.
8	• Measure the pulse profile using an oscilloscope at the keyless control module terminal 3C while operating the transmitter (card key). • Is the pulse profile become long at moment of transmitter operation?	Yes	Go to the next step.
8		No	• Inspect the wiring harness between the keyless receiver and the keyless control module. ― If the harness is normal, replace the keyless receiver. ― If the harness is malfunctioning, repair the wiring harness. • Go to the next step.
9	• Inspect for open or short circuit between keyless control module terminal 3Q terminal and PJB terminal J-04 F. • Is the wiring harness normal?	Yes	Reconnect the connectors, then go to the next step.
9		No	Repair or replace for open or short circuit.
10	• Measure the voltage at the door lock control module terminals J-05 AP and J-05 Y while operating the request switch. ― Unlock all door with the request switch: 1.0 V or less→B+→1.0 V or less (terminal J-05 Y) ― Lock all doors with the request switch: 1.0 V or less→B+→ 1.0 V or less or less (terminal J-05 AP) • Is the voltage as above?	Yes	• Inspect and repair the wiring harness between the door lock control module and the door lock actuator. • Inspect for door lock actuator. • Go to the next step.
10		No	Replace the door lock control module.
11	• Dose the keyless entry system operate properly?	Yes	Troubleshooting completed. Explain repairs to the customers
11	• Dose the keyless entry system operate properly?	No	Re-inspect the malfunction symptoms, then repeat from Step 1 if malfunction recurs.

3	Advanced keyless entry function inoperative
POSSIBLE CAUSE	• Malfunction in the transmitter (card key). • Malfunction in the keyless control module. • Malfunction in the keyless receiver. • Malfunction in the keyless antenna. • Malfunction in the PJB. • Wrong usage.