Test E: Doors Do Not Unlock Using Keypad

Turn ignition off. Connect NGS tester following manufacturers instructions. Monitor RAP PID KEY_PAD while pressing each number on keyless entry keypad. If more than one number is displayed with any single button, replace keypad. If no numbers are displayed, go to next step.
Monitor RAP PID KEY_PAD while pressing each number on keypad individually. If 1/2, 3/4, 5/6, 7/8 and 9/0 are displayed, go to next step. If more than one number but not all numbers are displayed, replace keypad. Clear DTCs and retest system. If all numbers do not display, go to step 8 . If a single number fails to display, go to step 7 .
Turn ignition off. Disconnect RAP module 22-pin connector C257. Measure voltage between ground and RAP module connector C257 terminal No. 22 (Pink/Yellow wire). If more than 10 volts exists, go to next step. If 10 volts or less exists, repair open in Pink/Yellow wire. Retest system.
Measure voltage between ground and RAP module connector C257 terminal No. 11 (Pink/Light Green wire). If more than 10 volts exists, replace RAP module. Retest system. If 10 volts or less exists, repair open in Pink/Light Green wire. Retest system.
Disconnect keypad switch 8-pin connector. Using NGS tester, monitor RAP PID KEY_PAD. If any numbers are displayed, go to next step. If no numbers are displayed, replace keyless entry keypad. Retest system.
Disconnect RAP module 22-pin connector C257. Measure resistance between ground and keypad connector terminals No. 1 (Red wire), No. 3 (Light Blue/Yellow wire), No. 4 (Light Green/Red wire), No. 5 (Yellow/Black wire) and No. 6 (Yellow wire) individually. If resistance is greater than 10 k/ohms, replace RAP module. Retest system. If resistance is 10 k/ohms or less, repair short to ground in appropriate circuit. retest system.

Disconnect RAP module 22-pin connector C257. Disconnect Keyless entry keypad 8-pin connector. Measure resistance of individual circuits as specified. See KEYPAD CIRCUIT RESISTANCE table. If resistance is 5 ohms or less, go to next step. If any resistances are greater than 5 ohms, repair open in appropriate wire. Retest system.

KEYPAD CIRCUIT RESISTANCE

Keypad Connector Terminal No.	Wire Color	RAP Module Connector Terminal No.
1	Red	8
3	Light Blue/Yellow	5
4	Light Green/Yellow	6
5	Yellow/Black	19
6	Yellow	7

Measure resistance between keyless entry keypad connector terminal No. 8 (Brown wire) and keyless entry keypad connector terminals No. 1 (Red wire), No. 3 (Light Blue/Yellow wire), No. 4 (Light Green/Red wire), No. 5 (Yellow/Black wire) and No. 6 (Yellow wire) individually. If resistance is less than 5 ohms, replace keyless entry keypad. Retest system. If resistance is 5 ohms or greater, repair open in appropriate wire. Retest system.