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DTC Troubleshooting

DIAGNOSIS PROCEDURE

Step Action YES NO
Was "Electronic Stability Program Check" performed?  Go to Step 2. Go to ELECTRONIC STABILITY PROGRAM CHECK .
DTC check for ESP® 
  1. Connect scan tool to DLC with ignition switch turned OFF.
  2. Turn ignition switch ON and check DTC for ESP®.

Is DTC U0073 and/or U0100 detected? 
Go to applicable DTC diag. flow. Go to Step 3.
Check brake light switch 
  1. Check brake light (brake pedal) switch.

Is it in good condition? 
Go to Step 4. Replace brake light switch.
Check brake light switch circuit 
  1. Disconnect connector from brake light switch connector with ignition switch turned OFF.
  2. Check for proper connection to switch connector.
  3. If connection are OK, measure voltage between "GRN" wire terminal of brake light switch connector and vehicle body ground.

Is it 10 - 14 V? 
Go to Step 5. Replace fuses and/or repair "GRN" wire circuit.
Check brake light switch circuit 
  1. Disconnect connectors from ECM.
  2. Check for proper connection to "E23-6" (J24B model) or "E23-24" (N32A model) wire of ECM connector.
  3. If connections are OK, check brake light switch circuit for the following.

  • Resistance of "GRN/YEL" (Hill descent control model) or "GRN/WHT" (Non-Hill descent control model) wire terminal of brake light switch between brake light switch connector and ECM connector is less than 1Ω (continuity check)
  • Resistance between "GRN/YEL" (Hill descent control model) or "GRN/WHT" (Non-Hill descent control model) wire terminal of brake light switch connector and vehicle body ground is infinity (ground short check)
  • Voltage of between "GRN/YEL" (Hill descent control model) or "GRN/WHT" (Non-Hill descent control model) wire terminal of brake light switch connector and vehicle body ground is 0 V with ignition switch tuned ON (power short check)

Is it in good condition? 
Substitute a known-good ECM and recheck. If DTC C1016 is still detected, substitute a known-good ESP® hydraulic unit/control module assembly and recheck. Repair or replace defective wire.