Test B, Keypad Illumination
This test checks keyless entry module, keypad and related circuits.
- Check voltage between ground and pin No. 13 of Brown connector and pins No. 13 and 14 of Gray connector. If readings are 10 volts or more, go to next step. 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 ground and pin No. 2 of Brown connector and pins No. 5 and 6 of Gray connector. See KEYLESS ENTRY MODULE CONNECTOR TERMINAL IDENTIFICATION in TEST A. If continuity exists, go to next step. If no continuity exists, repair open in corresponding circuit(s) and repeat QUICK TEST.
- Disconnect keypad and Brown module connector. Check continuity between ground and pin No. 1 of Brown connector. If continuity exists, repair short in circuit No. 66 and repeat QUICK TEST. If no continuity exists, go to next step.
- Connect keypad. Apply 12 volts between pin No. 1 (ground) and pin No. 8 of keypad connector. If keypad does not illuminate, replace keypad and repeat QUICK TEST. If keypad illuminates, go to step 5). See KEYPAD CONNECTOR TERMINAL IDENTIFICATION illustration.
- Disconnect Brown connector and keypad connectors. Check continuity between pin No. 1 of Brown connector and pin No. 8 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. 11 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 and pin 10 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.