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Diagnostic Procedure

DTC C101C:72 (EVP CONTROL UNIT) DIAGNOSTIC PROCEDURE

Step INSPECTION Action
1 RECORD SNAPSHOT DATA TO UTILIZE WITH REPEATABILITY VERIFICATION 
NOTE:
  • Recording can be facilitated using the screen capture function of the PC.
  • Record the snapshot data on the repair order.
 - Go to the next Step.
2 VERIFY IF SNAPSHOT DATA IS AFFECTED BY OTHER RELATED DTCs OCCURRING 
  • Using the M-MDS, perform the EVP control unit DTC inspection. (See DTC INSPECTION [EVP CONTROL UNIT] .)
  • Are following DTCs detected?
    • C1035:11
    • C1035:12
    • C1035:13
    • C1036:11
    • C1036:12
    • C1036:13
    • C101C:00
    • C101C:18
    • C101C:71
    • C101C:73
 Yes Go to the applicable DTC inspection. (See DTC TABLE [EVP CONTROL UNIT] .)
No Go to the next Step.
3 DETERMINE IF EVP CONTROL UNIT POWER SUPPLY CIRCUIT MALFUNCTION 
  • Switch the ignition ON (engine off).
  • Access the VPWR PID using the M-MDS.
  • Verify the VPWR PID value.
  • Is the VPWR PID value B+?
 Yes Go to the next Step.
No Perform the DTC U3003:16 procedures.
(See DTC C101B:16/C101B:17 [EVP CONTROL UNIT] .)
4 DETERMINE WHETHER MALFUNCTION IS PAST OR PRESENT 
NOTE:
  • When clearing the DTC, the snapshot data is also cleared at the same time. Snapshot data is recorded if it is not recorded in Step 1.
  • Using the M-MDS, clear the DTC from the EVP control unit. (See CLEARING DTC [EVP CONTROL UNIT] .)
  • Switch the ignition ON (engine off).
  • Access the following PIDs using the M-MDS.
    • VPS_FBK
    • VPR1_V
    • VPR2_V
  • Access the simulation item VPS_FBK using the M-MDS.
  • Verify PID values when the electric vacuum pump is operated by simulation item VPS_FBK.
  • Operate the electric vacuum pump, and are all PIDs on?
 Yes Go to the next Step.
No Replace the EVP control unit, then go to Step 7. (See EVP CONTROL UNIT REMOVAL/INSTALLATION .)
5 DRIVE VEHICLE THEN VERIFY DTC REPEATABILITY BASED ON SERVICE QUESTIONING RESULTS AND SNAPSHOT DATA 
  • Switch the ignition ON (engine off).
  • Access the following EVP control unit PIDs using the MMDS:
    • VPS_FBK
    • VPR1_V
    • VPR2 V
    • VPWR
  • Drive the vehicle based on the service questions content and snapshot data driving conditions.
  • Is the displayed PID value as follows?
  • VPWR: B+
  • VPS_FBK, VPR1_V, VPR2_V: On/Off display corresponds
 Yes Go to the next Step.
No If the VPWR PID is not B+: 
  • Inspect the EVP control unit power supply circuit.
  • Repair or replace the malfunctioning part.
If VPS_FBK, VPR1_V and VPR2_V PID values do not correspond: 
6 VERIFY DTC REPEATABILITY AND DETERMINE IF MALFUNCTION CAUSE IS EVP CONTROL UNIT 
 Yes Replace the EVP control unit, then go to the next Step.
(See EVP CONTROL UNIT REMOVAL/INSTALLATION .)
No DTC troubleshooting completed. Explain to the customer that there are no malfunctions with the vehicle based on the contents of the servicing.
7 VERIFY NO DTC IS PRESENT 
  • Are any DTCs present?
 Yes Go to the applicable DTC inspection. (See DTC TABLE [EVP CONTROL UNIT] .)
No DTC troubleshooting completed.
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