Test B, Keypad Illumination
This test checks keyless entry module, keypad and related circuits.
- Check voltage between pin No. 13 of Brown connector and pin No. 14 of Gray connector and ground. If readings are 10 volts or more, go to step 2). If readings are less than 10 volts, repair open or short in corresponding circuit(s). If necessary, replace burned-out fuses. Repeat QUICK TEST .
- Check continuity between pin No. 2 of Brown connector and pins No. 5 and 6 of Gray connector and ground. See KEYLESS ENTRY MODULE CONNECTOR TERMINAL IDENTIFICATION in TEST A. If continuity exists, go to step 3). If no continuity exists, repair open in corresponding circuit(s) and repeat QUICK TEST .
- Disconnect keypad and Brown module connector. Check continuity between pin No. 1 of Brown connector and ground. If continuity exists, repair short in circuit No. 66 and repeat QUICK TEST. If no continuity exists, go to steps 4) and 5).
- Connect keypad connector, but leave Brown connector disconnected. Apply 12 volts between pin No. 1 of Brown connector and ground. If keypad illuminates, go to PINPOINT TEST C. If keypad does not illuminate, go to step 6).
- Disconnect keypad. Check resistance between pins No. 3 and 6 of the keypad connector. If reading is 10 ohms or more, replace keypad. If reading is less than 10 ohms, go to step 6).
- Disconnect Brown module connector and keypad connector. Check continuity between pin No. 1 of Brown connector and pin No. 1 of keypad harness connector. If no continuity exists, repair open in circuit No. 66 (Light Blue wire) and repeat QUICK TEST . If continuity exists, go to next step.
- Disconnect keypad connector. Check for continuity between pin No. 8 of keypad and ground. If no continuity exists, repair open in ground circuit to keypad and repeat QUICK TEST . If continuity exists, go to next step.
- Check for short between pin No. 12 of Brown connector and ground. If short is found, repair circuit 124 (Brown wire) and repeat QUICK TEST . If no short is found, go to next step.
- Check continuity between pin No. 12 of Brown connector on all others) and pin No. 1 of keypad connector. If continuity exists, replace keyless entry module and repeat QUICK TEST . If no continuity exists, repair circuit No. 124 (Brown wire) and repeat QUICK TEST .