Keyless Access System (Body Control Module and Electric Steering Lock) Input Test (2/4-door)

Keyless Access System (Body Control Module and Electric Steering Lock) Input Test

Body Control Module

NOTE:

	Before testing, check for DTCs. If any DTCs are indicated, troubleshoot those DTCs first.
	If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
	Before testing, make sure the No. A1-5, No. A2-2, and No. A18 fuses are OK.
	Before testing, make sure the No. B8, No. B11^, and No. B30 fuses are OK. : Except L15BY engine

1.	Turn the vehicle to the OFF (LOCK) mode.

2.	Disconnect the body control module connectors. NOTE: All connector views are shown from the wire side of the female terminals.

Inspect the connectors and socket terminals to be sure they are all making good contact:

	If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
	If the terminals look OK, go to step 4.

With the connectors still disconnected, do the following input tests:

	If any test indicates a problem, find and correct the cause, then recheck the system.
	If all the input tests prove OK, then go to step 5.

Cavity

Wire

Test condition

Test: Desired result

Possible cause if desired result
is not obtained

D36

LT BLU

Under all conditions

Check for continuity between terminal D36 and data link connector (DLC) terminal No. 7:
There should be continuity.

An open or high resistance in the K LINE wire

Check for continuity between terminal D36 and body ground:
There should be no continuity.

A short to ground in the K LINE wire

F21

YEL

Under all conditions

Check for continuity between terminal F21 and data link connector (DLC) terminal No. 15:
There should be continuity.

An open or high resistance in the L-LINE wire

Check for continuity between terminal F21 and body ground:
There should be no continuity.

A short to ground in the L-LINE wire

G18

WHT

Press the engine start/stop switch button

Measure the voltage to ground:
There should be battery voltage.

	Blown No. B30 fuse
	Faulty engine start/stop switch
	An open or high resistance in the wire

BLK

Press the engine start/stop switch button

Check for continuity to ground:
There should be continuity.

	Faulty engine start/stop switch
	Poor ground (G503) or an open in the ground wire
	An open or high resistance in the wire

D35

RED

Jump the SCS line with the HDS, disconnect PCM connector A (50P)

Check for continuity between terminal D35 and PCM connector A (50P) terminal No. 40:
There should be continuity.

	An open in the S-NET wire
	PCM

Check for continuity between terminal D5 and body ground:
There should be no continuity.

A short to ground in the S-NET wire

Reconnect the connectors, and do the following input tests:

	If any test indicates a problem, find and correct the cause, then recheck the system.
	If all the input tests prove OK, then go to step 6.

Cavity

Wire

Test condition

Test: Desired result

Possible cause if desired result
is not obtained

B16

YEL

Under all conditions

Measure the voltage to ground:
There should be battery voltage.

	Blown No. B30 fuse
	An open or high resistance in the wire

C27

RED

Under all conditions

Measure the voltage to ground:
There should be battery voltage.

	Blown No. A18 fuse
	An open or high resistance in the wire

BLK

In all power modes

Measure the voltage to ground:
There should be less than 0.2 V.

	Poor ground (G501)
	An open or high resistance in the ground wire

BLK

In all power modes

Measure the voltage to ground:
There should be less than 0.2 V.

	Poor ground (G501)
	An open or high resistance in the ground wire

G27

RED

Vehicle ON mode

Measure the voltage to ground:
There should be battery voltage.

	Blown No. A2-2 fuse
	An open or high resistance in the wire

PUR^*6
BLU^*7

Vehicle ON mode

Measure the voltage to ground:
There should be battery voltage.

	Blown No. B8 fuse
	Blown No. B11^*6 fuse
	An open or high resistance in the wire

G10

YEL

Vehicle ON mode

Measure the voltage to ground:
There should be battery voltage.

	Blown No. A1-5 fuse
	An open or high resistance in the wire

G11

LT BLU

Vehicle ON mode

Measure the voltage to ground:
There should be battery voltage.

	Blown No. A1-5 fuse
	An open or high resistance in the wire

G19

YEL

Driver's door outer handle lock button pushed

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty driver's door outer handle
	Poor ground (G501) or an open in the ground wire
	An open or high resistance in the wire

Driver's door outer handle lock button released

Measure the voltage to ground:
There should be about 5 V.

	Faulty driver's door outer handle
	A short to ground in the wire

G1^*1

LT GRN

Front passenger's door outer handle lock button pushed

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty front passenger's door outer handle
	Poor ground (G505) or an open in the ground wire
	An open or high resistance in the wire

Front passenger's door outer handle lock button released

Measure the voltage to ground:
There should be about 5 V.

	Faulty front passenger's door outer handle
	A short to ground in the wire

G1^*2

LT GRN

Passenger's door outer handle lock button pushed

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty passenger's door outer handle
	Poor ground (G505) or an open in the ground wire
	An open or high resistance in the wire

Passenger's door outer handle lock button released

Measure the voltage to ground:
There should be about 5 V.

	Faulty passenger's door outer handle
	A short to ground in the wire

G23

BRN

Electric parking brake switch applied

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty electric parking brake switch
	Poor ground (G502) or an open in the ground wire
	An open or high resistance in the wire

Brake pedal pressed and electric parking brake switch released

Measure the voltage to ground:
There should be about 5 V.

	Faulty electric parking brake switch
	A short to ground in the wire

WHT

Trunk lid outer handle switch pushed

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty trunk lid outer handle switch
	Poor ground (G701) or an open in the ground wire
	An open or high resistance in the wire

Trunk lid outer handle switch released

Measure the voltage to ground:
There should be battery voltage.

	Faulty trunk lid outer handle switch
	A short to ground in the wire

C1^*3

GRN

Shift lever in P position/mode

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty transmission range switch
	Poor ground (G201) or an open in the ground wire
	An open or high resistance in the wire

Shift lever in any other position/mode other than P

Measure the voltage to ground:
There should be battery voltage.

	Faulty transmission range switch
	A short to ground in the wire

C26^*3

LT BLU

Shift lever in P position/mode

Measure the voltage to ground:
There should be battery voltage.

	Faulty park pin switch
	A short to ground in the wire

Shift lever in any other position/mode than P

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty park pin switch
	Poor ground (G502) or an open in the ground wire
	An open or high resistance in the wire

C26^*4

YEL

Clutch pedal released

Measure the voltage to ground:
There should be battery voltage.

	Faulty clutch pedal position switch A
	A short to ground in the wire

Clutch pedal pressed

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty clutch pedal position switch A
	Poor ground (G305) or an open in the ground wire
	An open or high resistance in the wire

C25

TAN^*6
GRY^*7

Brake pedal pressed

Measure the voltage to ground:
There should be battery voltage.

	Blown No. A8^*7 fuse
	Blown No. A9^*6 fuse
	Faulty brake pedal position switch
	An open or high resistance in the wire

G3^*5

PUR

Electric steering lock (LOCK)

Measure the voltage to ground:
There should be about 5 V.

	Faulty electric steering lock
	A short to ground in the wire

Electric steering lock (UNLOCK)

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty electric steering lock
	An open or high resistance in the wire

*1: 4-door
*2: 2-door
*3: CVT
*4: M/T
*5: With electric steering lock
*6: Except L15BY engine
*7: L15BY engine

Electric Steering Lock

NOTE:

	SRS components are located in this area. Review the SRS component locations, and precautions and procedures before doing repairs or servicing.
	Before testing, check for DTCs. If any DTCs are indicated, troubleshoot those DTCs first.

6.	Turn the vehicle to the OFF (LOCK) mode.

7.	Disconnect the electric steering lock 12P connector.

Inspect the connector and socket terminals to be sure they are all making good contact:

	If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
	If the terminals look OK, then go to step 9.

Reconnect the connector, and do the following input tests:

	If any test indicates a problem, find and correct the cause, then recheck the system.
	If all the input tests prove OK, go to step 10.

Cavity

Wire

Test condition

Test: Desired result

Possible cause if desired result
is not obtained

YEL

Under all conditions

Measure the voltage to ground:
There should be battery voltage.

	Blown No. B30 fuse
	An open or high resistance in the wire

BLU

Vehicle ON mode

Measure the voltage to ground:
There should be battery voltage.

	Blown No. B8 fuse
	An open or high resistance in the wire

BRN

In all power modes

Measure the voltage to ground:
There should be less than 0.2 V.

	Poor ground (G503)
	An open or high resistance in the ground wire

PUR

Electric steering lock (LOCK)

Measure the voltage to ground:
There should be about 5 V.

	Faulty body control module
	A short to ground in the wire

Electric steering lock (UNLOCK)

Measure the voltage to ground:
There should be less than 0.2 V.

	Faulty electric steering lock
	An open or high resistance in the wire

YEL

Vehicle ON mode

Measure the voltage to ground:
There should be battery voltage.

	Faulty body control module
	An open or high resistance in the wire
	A short to ground in the wire

10.	If multiple failures are found on more than one control unit, replace the body control module. If input failures are related to a particular control unit, replace the control unit.