Test A: Doors Do Not Lock/Unlock Using Keyless Entry Keypad
- Check DDM DTCs
If no DTCs are retrieved during preliminary procedure self-test, go to step 19). If DDM DTC B1525 is retrieved during preliminary procedure DDM self-test, go to next step. If any other DTCs are retrieved, see appropriate DTC INDEX under PRELIMINARY PROCEDURE to continue diagnosis. - Verify Keypad Buttons Are Not Stuck
Ensure all keypad buttons are not pressed. Using NGS tester, clear DTCs and perform DDM On-Demand Self-Test. If DDM DTC B1525 is not retrieved, go to next step. If DDM DTC B1525 is retrieved, go to step 4).NOTE: DDM PID KEY_PAD will read 1, 3, 5, 7, or 9 as each keypad button is pressed. - Verify Keypad Buttons Are Not Sticking
Using NGS tester, monitor DDM PID KEY_PAD while pressing and releasing each keypad buttons several times. If DDM PID KEY_PAD indicates each button releases within one second from when button is released, system is operating properly at this time. Clarify concern with customer. If DDM PID KEY_PAD does not indicate each button releases within one second from when button is released, replace keyless entry keypad and retest system operation. - Check For Keypad Button 1/2 Input
Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 1/2. If DDM PID KEY_PAD does not indicate 1, go to next step. If DDM PID KEY_PAD indicates 1, go to step 9). - Check For Keypad Button 3/4 Input
Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 3/4. If DDM PID KEY_PAD does not indicate 3, go to next step. If DDM PID KEY_PAD indicates 3, go to step 11). - Check For Keypad Button 5/6 Input
Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 5/6. If DDM PID KEY_PAD does not indicate 5, go to next step. If DDM PID KEY_PAD indicates 5, go to step 13). - Check For Keypad Button 7/8 Input
Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 7/8. If DDM PID KEY_PAD does not indicate 7, go to next step. If DDM PID KEY_PAD indicates 7, go to step 15). - Check For Keypad Button 9/0 Input
Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 9/0. If DDM PID KEY_PAD does not indicate 9, replace driver door module. Clear DTCs and retest system operation. If DDM PID KEY_PAD indicates 9, go to step 17). - Check Light Blue/Yellow Wire For Voltage
Turn ignition off. Disconnect DDM 20-pin connector C523 (located in lower front corner of driver door). Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 16 (Light Blue/Yellow wire). See Fig 1 . If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, replace driver door module. Clear DTCs and retest system operation. - Check Keypad Button 1/2
Turn ignition off. Disconnect keyless entry keypad connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 16 (Light Blue/Yellow wire). See Fig 1 . If voltage is more than 10 volts, repair Light Blue/Yellow wire and retest system operation. If voltage is 10 volts or less, replace keyless entry keypad and retest system operation. - Check Light Green/Red Wire For Voltage
Turn ignition off. Disconnect DDM 20-pin connector C523 (located in lower front corner of driver door). Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 14 (Light Green/Red wire). See Fig 1 . If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, replace driver door module. Clear DTCs and retest system operation. - Check Keypad Button 3/4
Turn ignition off. Disconnect keyless entry keypad connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 14 (Light Green/Red wire). See Fig 1 . If voltage is more than 10 volts, repair Light Green/Red wire and retest system operation. If voltage is 10 volts or less, replace keyless entry keypad and retest system operation. - Check Yellow/Black Wire For Voltage
Turn ignition off. Disconnect DDM 20-pin connector C523 (located in lower front corner of driver door). Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 3 (Yellow/Black wire). See Fig 1 . If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, replace driver door module. Clear DTCs and retest system operation. - Check Keypad Button 5/6
Turn ignition off. Disconnect keyless entry keypad connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 3 (Yellow/Black wire). See Fig 1 . If voltage is more than 10 volts, repair Yellow/Black wire and retest system operation. If voltage is 10 volts or less, replace keyless entry keypad and retest system operation. - Check Yellow Wire For Voltage
Turn ignition off. Disconnect DDM 20-pin connector C523 (located in lower front corner of driver door). Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 4 (Yellow wire). See Fig 1 . If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, replace driver door module. Clear DTCs and retest system operation. - Check Keypad Button 7/8
Turn ignition off. Disconnect keyless entry keypad connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 4 (Yellow wire). See Fig 1 . If voltage is more than 10 volts, repair Yellow wire and retest system operation. If voltage is 10 volts or less, replace keyless entry keypad and retest system operation. - Check Red Wire For Voltage
Turn ignition off. Disconnect DDM 20-pin connector C523 (located in lower front corner of driver door). Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 13 (Red wire). See Fig 1 . If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, replace driver door module. Clear DTCs and retest system operation. - Check Keypad Button 9/0
Turn ignition off. Disconnect keyless entry keypad connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 13 (Red wire). See Fig 1 . If voltage is more than 10 volts, repair Red wire and retest system operation. If voltage is 10 volts or less, replace keyless entry keypad and retest system operation. - Check Keypad Buttons
Using NGS tester, monitor DDM PID KEY_PAD while pressing and releasing each keypad buttons several times. If DDM PID KEY_PAD values do not agree with keypad, go to next step. If DDM PID KEY_PAD values agree with keypad, go to step 23). - Check Keypad Circuits For Opens
Turn ignition off. Disconnect DDM 20-pin connector C523 (located in lower front corner of driver door). Disconnect keyless entry keypad connector C525. Using an ohmmeter, check resistance in keyless entry keypad circuits between DDM 20-pin connector C523 and keyless entry keypad connector C525. See WIRING DIAGRAMS . If all resistances are less than 5 ohms, go to next step. If any resistance is 5 ohms or more, repair open in appropriate circuit(s) and retest system operation. - Check Keypad Circuits For Shorts To Ground
Using an ohmmeter, check resistance in each keyless entry keypad circuits between DDM 20-pin connector C523 and ground. See WIRING DIAGRAMS . If all resistances are more than 10 k/ohms, go to next step. If any resistance is 10 k/ohms or less, repair short to ground in appropriate circuit(s) and retest system operation. - Check Black/White Wire For Open
Using a voltmeter, check voltage between ground and keyless entry keypad connector C525 terminal No. 6 (Black/White wire). See Fig 2 . If voltage is more than 10 volts, replace keyless entry keypad and retest system operation. If voltage is 10 volts or less, repair Black/White wire and retest system operation. - Check Door Lock Operation From Driver Door Lock Switch
Attempt to operate door locks from driver door lock switch. If door locks operate properly, replace driver door module and retest system operation. If door locks do not operate properly, go to TEST E: ALL DOOR LOCKS ARE INOPERATIVE/DO NOT OPERATE PROPERLY under SYSTEM TESTS in DOOR LOCKS & TRUNK RELEASE - POWER article.