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Home >> Dodge and Ram >> 2000 >> Durango 5.9 Z, 4WD, Part Time >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> System Tests >> Communications >> No Response: Central Timer Module (CTM)
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No Response: Central Timer Module (CTM)

CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector or battery.
  1. Remove and inspect fuse No. 13 (20-amp) in Junction Block (JB). Ensure fuse is correct. Using DVOM, check power supply terminal for fuse No. 13 (Red/Black wire) of JB. If reading is less than 10 volts, repair open or short in Red/Black wire between JB and Power Distribution Center (PDC) fuse No. 7 (50-amp). Perform BODY VERIFICATION TEST  . If reading is 10 volts or more, go to next step.
  2. Disconnect Central Timer Module (CTM) connector C1. Install fuse No. 13 (20-amp) in JB. Measure voltage at CTM connector C1 terminal No. 14 (Red wire). If reading is 10 volts or more, go to next step. If reading is less than 10 volts, repair open or short to ground in Red wire between CTM connector and fuse No. 13 (20-amp) in JB. Perform BODY VERIFICATION TEST  .
  3. Turn ignition switch to ON position. Measure voltage at CTM connector C1 terminal No. 4 (Dark Blue wire) on base-line models. Measure voltage at CTM connector C1 terminal No. 8 (Dark Blue wire) on high-line models. If reading is volts or more, go to next step. If reading is less than 10 volts, repair open in Dark Blue wire between CTM and fuse No. 6 (20-amp) in JB. Perform BODY VERIFICATION TEST  .
  4. Measure voltage at CTM connector C2 terminal No. 5 (Dark Blue/White wire). If reading is 10 volts or more, go to next step. If reading is less than 10 volts, repair open in Dark Blue/White wire between CTM and fuse No. 11 (10-amp) in JB. Perform BODY VERIFICATION TEST  .
  5. Turn ignition switch to OFF position. Measure resistance between ground and CTM connector C2 terminal No. 3 (Black wire). If reading is less than 5 ohms, go to next step. If reading is 5 ohms or more, repair open in Black wire. Perform BODY VERIFICATION TEST  .
  6. Measure resistance between ground and CTM connector terminal No. 6 (Black/Light Green wire on Dakota; Black/Tan wire on Durango). If reading is less than 5 ohms, go to next step. If reading is 5 ohms or more, repair open in Black/Light Green wire on Dakota (Black/Tan wire on Durango). Perform BODY VERIFICATION TEST  .
  7. Connect CTM connectors. Using a fused jumper wire, backprobe between ground and CTM connector C2 terminal No. 16 (Violet/Brown wire). Turn ignition switch to ON position. Perform CCD bus test. If scan tool displays SHORT TO GROUND, go to next step. If scan tool does not display short to ground, repair open in Violet/Brown wire. Perform BODY VERIFICATION TEST  .
  8. Turn ignition switch to OFF position. Remove jumper wire from terminal No. 16 and backprobe CTM connector C2 terminal No. 17 (White/Black wire). Turn ignition switch to ON position. Perform CCD bus test. If scan tool displays SHORT TO GROUND, go to next step. If scan tool does not display short to ground, repair open in White/Black wire. Perform BODY VERIFICATION TEST  .
  9. Inspect connectors for good terminal contact and Repair connectors as necessary. If connectors are okay, replace CTM. Perform BODY VERIFICATION TEST  .
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